James Michael Moran

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James Michael Moran is affiliated with the following schools: California Institute of Technology, Princeton University, University of Notre Dame, Stanford University, Massachusetts Institute of Technology, Harvard University

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James Michael Moran

Physics

#4388

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#6039

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#1470

USA Rank

Cosmology

#134

World Rank

#142

Historical Rank

#50

USA Rank

Astrophysics

#280

World Rank

#311

Historical Rank

#103

USA Rank

Astronomy

#569

World Rank

#1038

Historical Rank

#280

USA Rank

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Physics

James Michael Moran's Degrees

Bachelors Physics Princeton University

Why Is James Michael Moran Influential?

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According to Wikipedia, James Moran is an American radio astronomer living in Massachusetts, USA. He was a professor of Astronomy at Harvard University from 1989 through 2016, a senior radio astronomer at the Smithsonian Astrophysical Observatory from 1981 through 2020 and the director of the Submillimeter Array during its construction and early operational phases from 1995 through 2005. In 1998 he was elected to the National Academy of Sciences, in 2010 to the American Academy of Arts and Sciences, and in 2020 to the American Philosophical Society. He is currently the Donald H. Menzel Professor of Astrophysics, Emeritus, at Harvard University.

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James Michael Moran's Published Works

Number of citations in a given year to any of this author's works

Total number of citations to an author for the works they published in a given year. This highlights publication of the most important work(s) by the author

Published Works

First M87 Event Horizon Telescope Results. I. The Shadow of the Supermassive Black Hole (2019) (1857)
Interferometry and Synthesis in Radio Astronomy (1986) (1227)
Evidence for a black hole from high rotation velocities in a sub-parsec region of NGC4258 (1995) (871)
First M87 Event Horizon Telescope Results. VI. The Shadow and Mass of the Central Black Hole (2019) (775)
The distance to the center of the Galaxy (1987) (748)
First M87 Event Horizon Telescope Results. V. Physical Origin of the Asymmetric Ring (2019) (715)
First M87 Event Horizon Telescope Results. IV. Imaging the Central Supermassive Black Hole (2019) (684)
Event-horizon-scale structure in the supermassive black hole candidate at the Galactic Centre (2008) (651)
First M87 Event Horizon Telescope Results. II. Array and Instrumentation (2019) (572)
The Submillimeter Array (2004) (501)
First M87 Event Horizon Telescope Results. III. Data Processing and Calibration (2019) (497)
A geometric distance to the galaxy NGC4258 from orbital motions in a nuclear gas disk (1999) (379)
Jet-Launching Structure Resolved Near the Supermassive Black Hole in M87 (2012) (332)
Interferometry and Synthesis in Radio Astronomy, 2nd Edition (2001) (321)
First Sagittarius A* Event Horizon Telescope Results. I. The Shadow of the Supermassive Black Hole in the Center of the Milky Way (2022) (307)
Event Horizon Telescope Results . I . the Shadow of the Supermassive Black Hole (2019) (272)
Proper motions and distances of H2O maser sources. I - The outflow in Orion-KL (1981) (245)
A Warped Accretion Disk and Wide-Angle Outflow in the Inner Parsec of the Circinus Galaxy (2003) (241)
An Unambiguous Detection of Faraday Rotation in Sagittarius A* (2006) (227)
TOWARD A NEW GEOMETRIC DISTANCE TO THE ACTIVE GALAXY NGC 4258. III. FINAL RESULTS AND THE HUBBLE CONSTANT (2013) (188)
Resolved magnetic-field structure and variability near the event horizon of Sagittarius A* (2015) (175)
Detection of a Subparsec Diameter Disk in the Nucleus of NGC 4258 (1995) (175)
First M87 Event Horizon Telescope Results. VIII. Magnetic Field Structure near The Event Horizon (2021) (162)
Interferometric Measurements of Variable 340 GHz Linear Polarization in Sagittarius A* (2005) (160)
An X-Ray, Infrared, and Submillimeter Flare of Sagittarius A* (2007) (160)
Distance and Kinematics of the W49N H 2O Maser Outflow (1992) (158)
First M87 Event Horizon Telescope Results. VII. Polarization of the Ring (2021) (157)
A disk of dust and molecular gas around a high-mass protostar (2005) (154)
1.3 mm WAVELENGTH VLBI OF SAGITTARIUS A*: DETECTION OF TIME-VARIABLE EMISSION ON EVENT HORIZON SCALES (2010) (153)
Universal interferometric signatures of a black hole’s photon ring (2019) (153)
The Geometry of and Mass Accretion Rate through the Maser Accretion Disk in NGC 4258 (2005) (136)
First Sagittarius A* Event Horizon Telescope Results. VI. Testing the Black Hole Metric (2022) (136)
The Event Horizon General Relativistic Magnetohydrodynamic Code Comparison Project (2019) (135)
Radio observations of water vapor, hydroxyl, silicon monoxide, ammonia, carbon monoxide, and compact H II regions in the vicinities of suspected Herbig-Haro objects (1980) (127)
COMPACT CONTINUUM RADIO SOURCES IN THE ORION NEBULA (1982) (119)
Evidence for a Geometrically Thick Self-Gravitating Accretion Disk in NGC 3079 (2004) (107)
First Sagittarius A* Event Horizon Telescope Results. V. Testing Astrophysical Models of the Galactic Center Black Hole (2022) (107)
The structure of interstellar hydroxyl masers: VLBI synthesis observations of W3(OH) (1980) (103)
VLA observations of strong IRAS point sources associated with compact H II regions (1993) (99)
Gravitational Test beyond the First Post-Newtonian Order with the Shadow of the M87 Black Hole. (2020) (94)
Proper motions and distances of H2O maser sources. III - W51NORTH (1981) (94)
First Sagittarius A* Event Horizon Telescope Results. II. EHT and Multiwavelength Observations, Data Processing, and Calibration (2022) (91)
230 GHz VLBI OBSERVATIONS OF M87: EVENT‐HORIZON‐SCALE STRUCTURE DURING AN ENHANCED VERY‐HIGH‐ENERGY γ ?> ‐RAY STATE IN 2012 (2015) (90)
First Sagittarius A* Event Horizon Telescope Results. IV. Variability, Morphology, and Black Hole Mass (2022) (89)
Line Imaging of Orion KL at 865 μm with the Submillimeter Array (2005) (89)
Water Maser Emission and the Parsec-Scale Jet in NGC 3079 (1997) (88)
Coexisting conical bipolar and equatorial outflows from a high-mass protostar (1998) (86)
The Size, Shape, and Scattering of Sagittarius A* at 86 GHz: First VLBI with ALMA (2019) (84)
The Warp in the Subparsec Molecular Disk in NGC 4258 as an Explanation for Persistent Asymmetries in the Maser Spectrum (1996) (84)
RADIO AND MILLIMETER MONITORING OF Sgr ?> A⋆: SPECTRUM, VARIABILITY, AND CONSTRAINTS ON THE G2 ENCOUNTER (2015) (84)
Small-scale structure and position of Sagittarius A(*) from VLBI at 3 millimeter wavelength (1994) (82)
First Sagittarius A* Event Horizon Telescope Results. III. Imaging of the Galactic Center Supermassive Black Hole (2022) (82)
Discovery of a Subparsec Jet 4000 Radii Away from the Central Schwarzschild Engine of NGC 4258 (1997) (81)
Radio sources in NGC 6334 (1982) (80)
The Triple Radio Continuum Source in Serpens: The Birth of a Herbig-Haro System? (1993) (80)
The Distribution of H2O Maser Emission in the Nucleus of NGC 4945 (1997) (79)
The impact of VLBI on astrophysics and geophysics; Proceedings of the 129th IAU Symposium, Cambridge, MA, May 10-15, 1987 (1988) (77)
VLBI observations of the 6.7 GHz methanol masers toward W3(OH) (1992) (74)
Interferometric Observations of the SiO Masers and Dust Shell of VX Sagittarii (1995) (72)
Toward a New Geometric Distance to the Active Galaxy NGC 4258. II. Centripetal Accelerations and Investigation of Spiral Structure (2007) (71)
The flare activity of Sagittarius A : New coordinated mm to X-ray observations (2005) (70)
VLBA Continuum Observations of NGC 4258: Constraints onan Advection-dominated Accretion Flow (1998) (68)
Anisotropic mass outflow in Cepheus A (1980) (68)
Coherence limits for very-long-baseline interferometry (1981) (68)
Large proper motions in the remarkable triple radio source in Serpens (1989) (67)
Detection of Intrinsic Source Structure at ∼3 Schwarzschild Radii with Millimeter-VLBI Observations of SAGITTARIUS A* (2018) (67)
Synchrotron Emission from the H 2O Maser Source in W3(OH) (1995) (67)
PERSISTENT ASYMMETRIC STRUCTURE OF SAGITTARIUS A* ON EVENT HORIZON SCALES (2016) (63)
A Green Bank Telescope Search for Water Masers in Nearby Active Galactic Nuclei (2004) (63)
Toward a New Geometric Distance to the Active Galaxy NGC 4258. I. VLBI Monitoring of Water Maser Emission (2007) (63)
Are interstellar toroids the focusing agent of the bipolar molecular outflows (1983) (63)
On the size of the galactic centre compact radio source: diameter <20 AU (1985) (62)
The Active Jet in NGC 4258 and Its Associated Shocks (2000) (59)
The Parsec-Scale Accretion Disk in NGC 3393 (2008) (59)
The Discovery of H2O Maser Emission in Seven Active Galactic Nuclei and at High Velocities in the Circinus Galaxy (2002) (58)
Subarcsecond Submillimeter Continuum Observations of Orion KL (2004) (58)
The Scattering and Intrinsic Structure of Sagittarius A* at Radio Wavelengths (2018) (57)
Discovery of Water Maser Emission in Eight AGNs with 70 m Antennas of NASA’s Deep Space Network (2005) (56)
Structure of stellar hydroxyl masers (1977) (55)
Compact H II regions: hydrogen recombination and OH maser lines (1985) (55)
Kinematics of W3(OH): First Proper Motions of OH Masers from VLBI Measurements (1992) (54)
Fringe Detection Methods for Very Long Baseline Arrays (1995) (53)
Precision Geodesy via Radio Interferometry (1972) (53)
THE HIGH-DENSITY IONIZED GAS IN THE CENTRAL PARSEC OF THE GALAXY (2010) (52)
Magnetic field structure of the star-forming region W3(OH) - VLBI spectral line results (1988) (51)
Coherence limits in VLBI observations at 3-millimeter wavelength (1984) (51)
Discovery of Water Maser Emission in Five AGNs and a Possible Correlation Between Water Maser and Nuclear 2-10 keV Luminosities (2006) (51)
The Exciting Source of the Bipolar Outflow in L1448 (1990) (50)
Extremely Rapid Variations of Water Maser Emission from the Circinus Galaxy (1996) (49)
Constraints on black-hole charges with the 2017 EHT observations of M87* (2021) (48)
Submillimeter Array 440 μm/690 GHz Line and Continuum Observations of Orion KL (2005) (48)
THE COLLIMATED JET SOURCE IN IRAS 16547-4247: TIME VARIATION, POSSIBLE PRECESSION, AND UPPER LIMITS TO THE PROPER MOTIONS ALONG THE JET AXIS (2008) (47)
The large scattering disk of NGC 6334B (1990) (47)
Spectral Line Interferometry with Independent Time Standards at Stations Separated by 845 Kilometers (1967) (47)
THE DEVELOPMENT OF HIGH-RESOLUTION IMAGING IN RADIO ASTRONOMY ⁄ (2001) (47)
The Orion-KL super water maser (1989) (46)
VLBI aperture synthesis observations of the OH maser source W75 N (1981) (46)
ALMA Polarimetry of Sgr A*: Probing the Accretion Flow from the Event Horizon to the Bondi Radius (2018) (45)
Resolving the disk rotation of HD 97048 and HD 100546 in the [ O I ] 6300 A line : evidence for a giant planet orbiting HD 100546 (2006) (44)
Probing the Magnetic Field at Subparsec Radii in the Accretion Disk of NGC 4258 (2005) (44)
Polarimetric Properties of Event Horizon Telescope Targets from ALMA (2021) (44)
A 5 GHz Southern Hemisphere VLBI Survey of Compact Radio Sources. II. (1997) (43)
Probing active galactic nuclei with H2O megamasers. (1995) (43)
Event Horizon Telescope observations of the jet launching and collimation in Centaurus A (2021) (42)
VLBI observations of the water vapor masers in Cepheus A, S 252 a, Gl2789, GL 2139, CO 59.79+0.04, W 33 b, and U Orionis. (1981) (42)
Broadband Multi-wavelength Properties of M87 during the 2017 Event Horizon Telescope Campaign (2021) (41)
Monitoring the Morphology of M87* in 2009–2017 with the Event Horizon Telescope (2020) (41)
Anisotropic mass outflow in regions of star formation. (1982) (40)
Estimation of the propagation delay through the troposphere from microwave radiometer data (1981) (39)
The structure of the OH source in W3. (1968) (38)
Event Horizon Telescope imaging of the archetypal blazar 3C 279 at an extreme 20 microarcsecond resolution (2020) (37)
Infrared and radio observations of W51: another Orion-KL at a distance of 7 kiloparsecs? (1982) (37)
THEMIS: A Parameter Estimation Framework for the Event Horizon Telescope (2020) (36)
Anisotropic Radio Scattering of NGC 6334B (1998) (36)
First images of water vapor masers in the galaxy M33 (1990) (36)
High-resolution VLBA imaging of the radio source Sgr A* at the Galactic Centre (1993) (35)
Observational evidence for massive black holes in the centers of active galaxies (1999) (35)
Proper Motion of Water Masers Associated with IRAS 21391+5802: Bipolar Outflow and an AU-Scale Dusty Circumstellar Shell (2000) (35)
Very long baseline interferometric observations of the H2O sources in W49N, W3(OH), Orion A, and VY Canis Majoris. (1973) (35)
The Submillimeter Polarization of Sgr A (2006) (34)
FINE-SCALE STRUCTURE OF THE QUASAR 3C 279 MEASURED WITH 1.3 mm VERY LONG BASELINE INTERFEROMETRY (2013) (34)
Infall and Outflow of Molecular Gas in Sgr B2 (2008) (34)
VLBI observations of SiO masers at a wavelength of 7 millimeters in late-type stars (1979) (33)
Evidence for the Zeeman effect in the OH maser emission from W3 /OH/ (1978) (33)
THE CIRCULAR POLARIZATION OF SAGITTARIUS A* AT SUBMILLIMETER WAVELENGTHS (2011) (33)
A Search for H2O Maser Emission Toward Active Galactic Nuclei: Discovery of a Nuclear Maser Source in NGC 3735 (1997) (33)
X-Ray Luminosity and Absorption Column Fluctuations in the H2O Maser Galaxy NGC 4258 from Weeks to Years (2005) (32)
Verification of Radiative Transfer Schemes for the EHT (2020) (32)
Upper Limit of 3.3 Astronomical Units to the Diameter of the Galactic Center Radio Source Sgr A* (1993) (32)
Accelerations of Water Masers in NGC 4258 (2000) (31)
Observations of a compact H II region and water vapor maser sources in the vicinity of the Herbig-Haro objects 7-11 (1980) (31)
OH RADIO EMISSION ASSOCIATED WITH INFRARED STARS. (1970) (31)
VLBI observations of the water vapor maser in the nucleus of NGC 3079 (1990) (31)
Revealing the Molecular Universe: One Antenna is Never Enough (2006) (30)
The Polarized Image of a Synchrotron-emitting Ring of Gas Orbiting a Black Hole (2021) (29)
Stellar OH masers and magnetic fields - VLBI observations of U Orionis and IRC +10420 (1979) (29)
Polarimetric Observations of the Masers in NGC 4258: An Upper Limit on the Large-Scale Magnetic Field 0.2 Parsecs from the Central Engine (1998) (28)
Microarcsecond proper motions of extragalactic water vapor masers in M33 (1993) (28)
Limits on refractive interstellar scattering toward sagittarius B2 (1988) (28)
50 MU as resolution VLBI images of AGN's at lambda 3 mm (1998) (28)
The G19.6–0.2 Region of Star Formation: Molecular and Ionized Environs (1998) (28)
Water-vapor masers and star formation in NGC 6334 (1979) (28)
Outflow 20-2000 AU from a High-Mass Protostar in W51-IRS 2 (2001) (28)
Submillimeter Array Imaging of the Maser Emission from the H30α Radio Recombination Line in MWC 349A (2008) (27)
THE ROTATING MOLECULAR STRUCTURES AND THE IONIZED OUTFLOW ASSOCIATED WITH IRAS 16547−4247 (2009) (27)
Ammonia Observations of Regions with Molecular Outflows (1986) (27)
First Detection of Millimeter/Submillimeter Extragalactic H2O Maser Emission (2005) (27)
VLBI observations of 12 GHz methanol masers (1988) (27)
Radio observations of the young planetary nebula NGC 6302 (1985) (26)
Evidence for Zeeman Splitting in 1720 MHz OH Line Emission (9) (1975) (26)
DISCOVERY OF CANDIDATE H2O DISK MASERS IN ACTIVE GALACTIC NUCLEI AND ESTIMATIONS OF CENTRIPETAL ACCELERATIONS (2009) (25)
Interferometric Observation of the Highly Polarized SiO Maser Emission from the v = 1, J = 5-4 Transition Associated with VY Canis Majoris (2004) (25)
The distance to NGC 6302 (1989) (24)
ALMA reveals a candidate hot and compact disc around the O-type protostar IRAS 16547-4247 (2014) (24)
Detection of the Angular Expansion Rate and Determination of the Distance of the Planetary Nebula NGC 6302 (1993) (24)
A Search for H2O Maser Emission in Southern Active Galactic Nuclei and Star-forming Galaxies: Discovery of a Maser in the Edge-on Galaxy IRAS F01063–8034 (2001) (24)
Discovery of an energetic bipolar molecular outflow towards IRAS 16547-4247 (2007) (24)
Studies of H2O sources by means of a very- long-baseline interferometer (1970) (22)
Interferometric study of cosmic line emission at OH frequencies. (1966) (22)
H2O Masers and Supersonic Turbulence (2002) (22)
Spectra and Sizes of Hypercompact H II Regions (2006) (22)
VLBI and polarimetric observations of the SiO masers in R Cassiopeiae (1989) (21)
Millimeter Light Curves of Sagittarius A* Observed during the 2017 Event Horizon Telescope Campaign (2022) (21)
VLBI observations of the SiO maser in Orion (1979) (20)
The bipolar H II region NGC 6334A (1988) (20)
The dense molecular envelope around the compact H II region G5.89-0.39 (W28 A2) (1991) (20)
Very long baseline interferometry at a wavelength of 3.4 mm (1983) (19)
Water-vapor masers located near Herbig-Haro objects. (1983) (18)
The proper motions of the H 2 O masers near W3(OH). (1993) (18)
The structure of H 2 O masers associated with late-type stars. (1979) (18)
5.5. Very Long Baseline lnterferometric Observations and Data Reduction (1976) (18)
An interferometer map of the water-vapor sources in W49 (1971) (18)
The structure of OH masers around late-type stars (1980) (17)
Mass outflow in star formation regions: Cepheus A (1982) (17)
Five new H 2 O masers located near Herbig-Haro objects. (1978) (16)
RESOLVING THE INNER JET STRUCTURE OF 1924-292 WITH THE EVENT HORIZON TELESCOPE (2012) (16)
Posible radio spectral indices from inhomogeneous free - free sources (1993) (16)
Recent Results of Radio Interferometric Determinations of a Transcontinental Baseline, Polar Motion, and Earth Rotation (1979) (16)
Persistent Non-Gaussian Structure in the Image of Sagittarius A* at 86 GHz (2021) (15)
Spectral-line analysis of very-long-baseline interferometric data (1973) (15)
Observations of OH emission in the H II REGION W3 with a 74400 lambda interferometer. (1967) (14)
The Angular Structure and Intraday Variability of a Water Vapor Maser in IC 10 (1994) (14)
Detection of radio emission from the Becklin-Neugebauer object (1983) (14)
Observations of OH and H 2 O microwave maser emission from VY Canis Majoris. (1978) (14)
HYPERCOMPACT H ii REGIONS: RESOLVED IMAGES OF G34.26+0.15 A AND B (2009) (14)
Van Cittert–Zernike Theorem, Spatial Coherence, and Scattering (2017) (14)
A Universal Power-law Prescription for Variability from Synthetic Images of Black Hole Accretion Flows (2022) (13)
Light echos and coherent autocorrelations in a black hole spacetime (2020) (13)
Selective Dynamical Imaging of Interferometric Data (2022) (13)
5.3. Very Long Baseline Interferometer Systems (1976) (13)
SYMBA: An end-to-end VLBI synthetic data generation pipeline (2020) (13)
The Positions and Angular Extent of OH Emission Associated with the H II Regions W3, W24, W49, and NGC 6334 (1967) (13)
Characterizing and Mitigating Intraday Variability: Reconstructing Source Structure in Accreting Black Holes with mm-VLBI (2022) (13)
The Photon Ring in M87* (2022) (12)
VLBI observations of interstellar ammonia masers (1991) (12)
Resolving the Inner Parsec of the Blazar J1924–2914 with the Event Horizon Telescope (2022) (12)
Introduction to VLBI (1989) (11)
Neutral hydrogen associated with the planetary nebula NGC6302 (1982) (11)
Sun-sized Water Vapor Masers in Cepheus A (2018) (10)
The IC 133 Water Vapor Maser in the Galaxy M33: A Geometric Distance (2004) (10)
Maser Spot Shape Persistence: Evidence for the Kinematic Interpretation of Proper Motions (1996) (10)
VLBI observations of the H2O masers in Sagittarius B2 (1980) (10)
The relative positions of the OH and H$sub 2$O masers in W49N and W3(OH) (1975) (9)
Ammonia toroid aligned perpendicular to the HH 1 and HH 2 bipolar outflow. [Herbig-Haro objects] (1985) (9)
The spatial distribution of the OH and H 2 O masers associated with W3(OH), W49N, and W51. (1978) (9)
VLBA Imaging of the OH Maser in III Zw 35 (1997) (9)
Thirty Years of VLBI: Early Days, Successes, and Future (1998) (9)
Very long baseline interferometric observations of OH masers associated with infrared stars (1977) (9)
H2O MegaMasers: RadioAstron success story (2017) (8)
Observations of the shock in a region of shock-induced star formation - NGC 281 (1979) (8)
Detection and estimation practices in radio and radar astronomy (1970) (8)
Further interferometer observations of the water vapor sources in W49 (1974) (8)
Submillimeter Array Observations of CS J = 14-13 Emission from the Evolved Star IRC +10216 (2004) (8)
Kinematics of the Ultracompact H II Region W3(OH): Constraints Derived from High-n Radio Recombination Lines (1996) (8)
The Black Hole Accretion Disk in NGC 4258: One of Nature's Most Beautiful Dynamical Systems (2008) (7)
A Submillimeter-Wavelength Telescope Array: Scientific, Technical, and Strategic Issues: Report of the Submillimeter Telescope Committee of the Harvard-Smithsonian Center for Astrophysics (1984) (7)
Observations of the SiO and H2O masers in Orion A (1977) (7)
Constraints on blackhole charges with the 2017 EHT observations of M 87 * (2021) (7)
Regional Modernisms (2013) (6)
Astronomy: Masers in the nuclei of galaxies (1984) (6)
Masers and the Cosmic Distance Scale (1988) (6)
The asymmetric profile of the H76 alpha line emission from MWC349 (1986) (5)
Performance assessment of an adaptive beamformer for the submillimeter array (2016) (5)
Very Long Baseline Interferometry of Galactic OH Sources (1970) (5)
Analysis of the Interferometer Response (2017) (5)
Interaction of the high-density gas with the bipolar outflow in Cepheus A (1987) (5)
W3(OH): accurate relative positions of water-vapor emission features (1973) (5)
An X-ray, IR, and Submillimeter Flare of Sagittarius A* (2006) (5)
Evolution of the sub-milliarcsecond nucleus of 3C 84 at 100 GHz (1988) (5)
The hydroxyl masers in the Orion Nebula (1977) (5)
Recent Progress on a New Distance to NGC 4258 (2005) (5)
The Unusual H2O Maser Source Near Herbig-Haro Object Number 11, (1976) (5)
VLBI observations of the double quasar 0957 + 561 (1981) (5)
OBSERVATIONS OF MASER RADIO SOURCES WITH AN ANGULAR RESOLUTION OF 0 .0002 (1972) (4)
Atmospheric Phase Correction Using Total Power Radiometry at the Submillimeter Array (2004) (4)
Compact ammonia sources toward the G 10.5+0.00 HII region complex. (1993) (4)
Statistical Properties of the Radiation Fields from H 2 O Masers (1981) (4)
Interferometric Observations of the ^{2}Π_{3/2}, J = 5/2 State of Interstellar OH (1973) (4)
The Variability of the Black Hole Image in M87 at the Dynamical Timescale (2021) (4)
UvA-DARE (Digital Academic SYMBA: An end-to-end VLBI synthetic data generation pipeline Simulating Event Horizon Telescope observations of M 87 (2020) (4)
A milliarcsecond-resolution image of the OH masers in G34.3+0.2 (2000) (4)
0 Ja n 20 08 The Parsec-scale Accretion Disk in NGC (2008) (3)
Radio continuum and carbon monoxide observations of V645 Cygni /GL 2789/ (1981) (3)
Position Measurements of H 2 O Masers Associated with Herbig-Haro Objects (1982) (3)
Smithsonian Submillimeter Wavelength Array (1994) (3)
Probing AGN with Water Masers (1996) (3)
Verification of the coating performance for the AXAF flight optics based on reflectivity measurements of coated witness samples (1996) (3)
THE EFFECTS OF PROPAGATION ON VLBI OBSERVATIONS (1989) (3)
VLBI observations of active galactic nuclei at 3 MM (1992) (3)
Response of the Receiving System (2017) (3)
The microarcsecond structure of 3C 273 at 3 mm. (1991) (3)
John Peter Huchra (2011) (3)
Geodetic and Astrometric Results of Very Long-Baseline Interferometric Measurements of Natural Radio Sources (1975) (3)
Infall, Fragmentation, and Outflow in Sgr B2 (2006) (3)
Observations of stellar OH masers with the VLA (1981) (3)
Masers in the envelopes of young and old stars (1990) (3)
Observations of H 2 O masers with a resolution of 0.0008 arcsec. (1977) (3)
An atlas of extragalactic water vapor masers (2007) (3)
Equipping the Submillimeter Array for VLBI (2011) (2)
Anomalous water masers in OH/IR stars. (1994) (2)
Introductory Theory of Interferometry and Synthesis Imaging (2017) (2)
Chapter 2. Introductory Theory of Interferometry and Synthesis Imaging (2007) (2)
Irish Birmingham: A History (2010) (2)
Very long baseline interferometric observations of the H$sub 2$O sources in W49 N, W3(OH), Orion A, and VY Canis Majoris (1973) (2)
Radio Frequency Interference (2017) (2)
Chapter 9. Very-Long-Baseline Interferometry (2007) (2)
Radio observations of compact sources near Herbig-Haro objects. (1983) (2)
230 GHz VLBI observations of M87: event-horizon-scale structure at the enhanced very-high-energy γ-ray state in 2012 (2022) (2)
THE 18-CM FLUX OF THE UNRESOLVED COMPONENT OF 3C 273. (1968) (2)
Accretion and Outflow Traced by Water Masers in the Circinus AGN (2000) (2)
Antennas and Arrays (2017) (2)
Propagation Effects: Ionized Media (2017) (2)
The SAO Submillimeter Wavelength Array (1994) (2)
Radio Emission from θ1A Orionis (1985) (2)
Aggression management. One. Response and responsibility. (1984) (2)
The Polarization Properties of Sgr A* at Submillimeter Wavelengths (2007) (2)
Chapter 14. Van Cittert-Zernike Theorem, Spatial Coherence, and Scattering (2007) (1)
Erratum: "Discovery of a Subparsec Jet 4000 Schwarzschild Radii Away from the Central Engine of NGC 4258" (ApJ, 475, L17 [1997]) (1997) (1)
High–resolution maser studies of galactic nuclei (2000) (1)
6 Centimeter Observations of Radio Galaxies Over a 228 Kilometer Baseline (1976) (1)
Proper Motions of H2O Masers in W49(N) and the Distance to the Galactic Center (1988) (1)
RadioAstron probes the ultra-fine spatial structure in the H2O maser emission in the star forming region W49N (2019) (1)
The Sub-Pc Scale Accretion Disk of Ngc 4258 (2005) (1)
Proper Motions and the Distance to a Water Vapor Maser in the Galaxy M33 (1998) (1)
A 4% Geometric Distance to NGC 4258 from Proper Motions in the Nuclear Water Maser (1997) (1)
Spatially Resolved H 2 O Masers as Probes of Supersonic Turbulence (1998) (1)
The Serpens Radio Jet: evidence of precession of nutation (1994) (1)
The Submillimeter Array Mauna Kea , Hawai ’ i (2004) (1)
New Results from the SMA (2004) (1)
Magnetic Fields in the Accretion Disks of Agn: NGC 4258 (2003) (1)
A 100 GHZ map of 3C 446 (1993) (1)
Accretion Disks in AGN Traced by Water Masers (1998) (1)
Radio observations of galactic masers. (1976) (1)
MASER SOURCES IN THE ORION‐KL REGION * (1982) (1)
The Central Parsecs of the Bright Quasar PKS 1921 - 293 (2002) (1)
Gravitational lenses : proceedings of a conference held at the Massachusetts Institute of Technology, Cambridge, Massachusetts, in honour of Bernard F. Burke's 60th birthday, June 20, 1988 (1989) (1)
Erratum - the Structure of OH Masers around Late-Type Stars (1981) (1)
VLBI Observations of the V=1 and V=2 SiO Masers in W Hydra and VX Sagittarius (1980) (1)
Proper motion studies of H 2 O masers (1993) (1)
Interstellar scattering of radiatin from H2O masers in W49 and Sgr B2 (2008) (1)
Upper limits for the mass loss rates from central stars of planetary nebulae. (1992) (1)
The Event Horizon Telescope Image of the Quasar NRAO 530 (2023) (1)
A 5 GHz Southern Hemisphere VLBI Survey (1996) (1)
Very Long Baseline Interferometry (1989) (1)
Parsec-Scale Water Maser Structure in TXS 2226-184 (2005) (1)
Erratum: “Toward a New Geometric Distance to the Active Galaxy NGC 4258. I. VLBI Monitoring of Water Maser Emission” (ApJ, 659, 1040 [2007]) (2008) (1)
The Legacy of the BIMA Millimeter Array (2009) (1)
Erratum: “Interferometric Observation of the Highly Polarized SiO Maser Emission from the v = 1, J = 5-4 Transition Associated with VY Canis Majoris” (ApJ, 616, L47 [2004]) (2004) (1)
Circumstellar envelope of VX Sgr resolved with long-baseline interferometry at millimeter and midinfrared wavelengths (1994) (1)
Test and evaluation of water vapor radiometers (1980) (1)
Erratum: “Discovery of Water Maser Emission in Eight AGNs with 70 m Antennas of NASA’s Deep Space Network” (ApJ, 638, 100 [2006]) (2006) (1)
Chapter 8. Digital Signal Processing (2007) (1)
Violent motions in galactic core (1993) (1)
Further Imaging Techniques (2017) (1)
Deconvolution, Adaptive Calibration, and Applications (2007) (1)
Chapter 12. Interferometer Techniques for Astrometry and Geodesy (2007) (1)
More light on a peculiar galaxy (1994) (1)
The Birmingham Political Union (2010) (1)
Donald Charles Backer (2011) (1)
Moving Toward Polarimetry with the Event Horizon Telescope (2014) (0)
The Spatial Distribution of Water Maser Emission in the NGC 4945 AGN (1995) (0)
Accretion and Outflow Traced by H 20 Masers in the Circinus AGN (2015) (0)
Doeleman in M 87 Jet-Launching Structure Resolved Near the Supermassive Black Hole (2012) (0)
Dynamical Evidence for a Supermassive Black Hole in NGC 4258 (1996) (0)
P o S ( E V N 2 0 1 8 ) 1 5 4 Ultracompact structures in galactic masers observed in the RadioAstron project (2019) (0)
The SAO submillimeter-wavelength telescope array (1987) (0)
A GBT Atlas of H2O Masers in Galactic Nuclei (2004) (0)
Map of H 2 O Line Emission Source in W49 (1971) (0)
Recent Progress on a New Geometric Distance to NGC 4258 (2003) (0)
Dynamical Models of the Maser in NGC 4258 (1997) (0)
Proper Motions of H 2 O Masers in W49(N) (1988) (0)
A 43GHz VLBI mapping of SiO maser emission associated with Orion-KL IRC-2 (1986) (0)
GBT MONITORING AND SURVEYS FOR H2O MASER EMISSION IN AGNS (2004) (0)
UvA-DARE ( Digital Academic Repository ) First M 87 Event Horizon Telescope Results .-II Array and Instrumentation Event Horizon Telescope (2019) (0)
War and Immigration (2010) (0)
The sub-parsec, geometrically thick, self-gravitating accretion disk in the nucleus of NGC 3079 (2004) (0)
Limits on Refractive Interstellar Scattering of H 2 O Masers (1988) (0)
Conclusion: St Patrick's Day (2010) (0)
So You Want to Do VLBI (2011) (0)
J an 2 00 8 Version 01 / 02 / 08 2 : 40 pm SMA Imaging of the Maser Emission from the H 30 α Radio Recombination Line in MWC 349 A (2008) (0)
Expansion of ultra-compact H II regions (1987) (0)
Magnetic Field Structure of Star Forming Regions - VLBI Spectral Line Results (1984) (0)
Water vapor masers and the cosmic distance scale. (1989) (0)
Recent Results from the Masers in NGC4258: Detection of Nuclear Continuum Emission, and Progress in Deriving a Geometric Distance (1996) (0)
The Pub Bombings (2010) (0)
The H 2 O maser outburst in Orion A. (1982) (0)
L1551: Finding New Things in an Old Cloud (2009) (0)
A search for high-velocity water masers. In regions of star formation (1981) (0)
Astronomy’s upper bounds (2022) (0)
Synchrotron Emission from the Water Maser Source in W3OH (1994) (0)
The Murphy Riots (2010) (0)
Rotating Molecular Structure Associated with an O-type Protostar (2005) (0)
Preliminary results from a study of the proper motion of water vapor masers in cepheus A (1993) (0)
George W. Swenson, Jr. (1922–2017) (2017) (0)
Very High Resolution Observations of the Luminous Water Masers in NGC 4258 (1988) (0)
LONG-BASELINE INTERFEROMETER EXPERIMENTS. (1968) (0)
Recent Observations of the SiO Maser in Orion (1979) (0)
The Warp in the Sub-Parsec-Scale Molecular Disk In NGC4258 as an Explanation for Persistent Asymmetries in the Water Maser Spectrum (1996) (0)
Angular size of OH emission regions. (1967) (0)
First VLBI Observations of Extragalactic Water Vapor Maser Flares in IC10 (1993) (0)
Cosmic masers and black holes (2004) (0)
Detection of jet launching structure near the supermassive black hole in M 87 (2012) (0)
SiO Maser Emission from Late-type Stars and Orion (1980) (0)
Proper Motion of Water Masers in IRAS 21391+5802: Bipolar Outflow and a Dusty Circumstellar Shell (1999) (0)
Magnetic field structure of the cometary HII region G34.3+0.2. Magnetic field structure of G34.3+0.2 (2000) (0)
H 2 O masers and the cosmic distance scale. (1987) (0)
Compact Ammonia Sources Toward the G10.5+0.0 Star Forming Region (1993) (0)
A supermassive object in the nucleus of NGC 4258 (1995) (0)
Coronal Hole Properties in Solar Cycle 24 (2014) (0)
VERY LONG BASELINE INTERFEROMETRY AS A MEANS OF WORLDWIDE TIME SYNCHRONIZATION (1970) (0)
Comparison of Polarized Radiative Transfer Codes used by the EHT Collaboration (2023) (0)
H2O Megamasers and Black Holes (1998) (0)
Evidence for Anisotropic Radio Scattering in the Interstellar Medium (1995) (0)
VLBI observations of Methanol masers at 6. 7 GHz (1993) (0)
The Structure of the Radio Recombination Line Maser Emission in the Envelope of MWC349A (2017) (0)
Tracking the Motions of Cosmic Masers (1993) (0)
Conference on Gravitational Lenses in Honor of Bernard F. Burke's 60th Birthday, June 20, 1988 (1989) (0)
Simultaneous Observations of Sgr A* Flares in the X-ray, NIR, and Submm (2008) (0)
Analysis of Hydrogen Recombination Masers Around MWC349A (2014) (0)
The Flare Activity of Sgr A * New Coordinated mm to X-Ray Observations (2005) (0)
Are Quasars Ejected from the Nucleus of NGC 4258 (2001) (0)
New VLBI maps of H 2 O sources in different stages of evolution. (1979) (0)
J an 2 00 8 Infall and Outflow of Molecular Gas in Sgr B 2 (2019) (0)
Observations of the H 2 O source W51 with the Crimea-Haystack radio interferometer. (1978) (0)
The Warp in the Sub-Parsec Molecular Disk in NGC 4258 (1996) (0)
Interstellar matter : proceedings of the Second Haystack Observatory Meeting : a symposium on interstellar molecules and grains in honor of Alan H. Barrett, Cambridge, Massachusetts, USA, 10-12 June 1987 (1988) (0)
Forthcoming article (1994) (0)
The structure of the H2O maser source in W3 OH (1981) (0)
First M 87 Event Horizon Telescope Results .-III Data Processing and Calibration Event Horizon (2019) (0)
Magnetic Field Structure of the Region w3 (oh): VLBI Spectral Line Results (1988) (0)
Proper Motions and Magnetic Fields in W3(OH) (1991) (0)
Book-Review - the Impact of VLBI on Astrophysics and Geophysics - I.A.U. SYMP.129 (1989) (0)
Milli-arcsecond Structure in NGC 1275 at 89 GHz (1987) (0)
VLBI observations of the water vapor megamaser in IC10 (1993) (0)
The sio masers and dust shell of VX sgr (1995) (0)
Modern Tragedy (2023) (0)
Circular Polarization at 1665 and 1667 MHz Towards OH Masers in NGC 6334N, NGC 7538N, NGC 7538S, and G45.07 + 0.13 (1988) (0)
SiO Maser Observations — VLBI and Polarimetry (1988) (0)
Proper Motions and Distances of Water Maser Complexes (1984) (0)
Some characteristics of an operational system for measuring UT1 using very long baseline interferometry. (1973) (0)
The Rotating Structures and Outflow of IRAS 16547-4247 (2007) (0)
H/sub 2/O maser flare in Orion A (1982) (0)
The Super Luminous Maser Source in the Nucleus of NGC 3079 (1988) (0)
Ultra-compact structures in galactic masers observed in the Radioastron project. (2019) (0)
Improved Maser Distance to NGC 4258 (2004) (0)
Riot at the Rep (2010) (0)
Time variations in the flux density of spatially resolved interstellar OH masers (1993) (0)
86 GHz Global VLBI Progress Report (1993) (0)
Introduction to the Submillimeter Array (2005) (0)
Chapter 6. Response of the Receiving System (2007) (0)
Potential impacts of WRC-2019 agenda items on scientific services (2017) (0)
Arthur E. Lilley (1928–2020) (2021) (0)
VizieR Online Data Catalog: Sgr A* 1.3mm VLBI observations with the EHT in 2013 (Lu+, 2018) (2019) (0)
Chapter 3. Analysis of the Interferometer Response (2007) (0)
Peter Mezger and the Development of Radio Astronomy in the US and Germany, and the Discovery of Radio Recombination Lines (1994) (0)
H 2 O Megamasers and Black Holes (1998) (0)
Calibration and Imaging (2017) (0)
Magnetic Fields in Interstellar Masers (1990) (0)
VizieR Online Data Catalog: 3C 279 Event Horizon Telescope imaging (Kim+, 2020) (2020) (0)
Coronal Hole Properties in Solar Cycle 24: Plasma Behavior in the Weakest Period of Solar Activity Over the Last Half Century (2014) (0)
0 Accelerations of Water Masers in NGC 4258 (2000) (0)
Interferometer Techniques for Astrometry and Geodesy (2017) (0)
Modernists and the Theatre (2022) (0)
Alan Maxwell (1926–2021) (2022) (0)
Chapter 5. Antennas and Arrays (2007) (0)
Calibration and Fourier Transformation of Visibility Data (2007) (0)
Design of the Analog Receiving System (2007) (0)
N ov 2 00 1 A Search for H 2 O Maser Emission in Southern AGN and Star Forming Galaxies – Discovery of a Maser in the Edge-on Galaxy IRASF 01063-8034 (2001) (0)
Angular structure and motions of interstellar masers (1990) (0)
SMA imaging of the masers in MWC349A (2007) (0)
Sgr A * : Spectrum , Variability , and Constraints on the G 2 Encounter (2015) (0)
Alan H. Barrett (1992) (0)
VLBI Observations of Ammonia (9,6) Masers (1992) (0)
INTERSTELLAR HYDROXYL CLOUDS. (1969) (0)
Patrick Thaddeus (1932–2017) (2021) (0)
Geometric Relationships and Polarimetry (2007) (0)
Propagation Effects: Neutral Medium (2017) (0)
The golden age of Australian radio astronomyFour Pillars of Radio Astronomy: Mills, Christiansen, Wild, Bracewell, R. H. Frater, W. M. Goss, and H. W. Wendt, Springer, 2017, $37.99 (2018) (0)
Structure of the H/sub 2/O maser source in W3 OH (1981) (0)
Introduction to drama (2010) (0)
Division X: Radio Astronomy (2005) (0)
Interferometer Observations of the 2 π{3/2}, J = {5/2} Microwave Tansition of OH. (1972) (0)
Chapter 1. Introduction and Historical Review (2007) (0)
Geometrical Relationships, Polarimetry, and the Interferometer Measurement Equation (2017) (0)
Detection of Intrinsic Source Structure at similar to 3 Schwarzschild Radii with Millimeter-VLBI Observations of SAGITTARIUS A* (2018) (0)
VLBI Mapping of 43 GHz SiO Emission Associated with IRc2 in Orion-Kl (1988) (0)
Radiotelescopes and Interferometry and Synthesis in Radio Astronomy and Tools of Radio Astronomy (1989) (0)
Introduction and Historical Review (2017) (0)
H2O in W51 main - an expanding bubble around a young massive star (1979) (0)
Interferometric Observations of the SiO High J Transition Maser associated with VY Canis Majoris with the Submillimeter Array (2006) (0)
Donald C. Backer (1943–2010) (2019) (0)
SMA Technical Memo # 163 Performance Assessment of a Beamformer for the Submillimeter Array (2016) (0)
Buck Naked, Gunslinger (2014) (0)
Magnetic Fields in Accretion Disks of AGN: The Case of NGC 4258 (2003) (0)
Nanjing's Historic Refractor (2003) (0)
Proper motions of the oh masers in W3(OH) (1989) (0)
Virtual performing arts studio (2017) (0)
Ammonia Observations of Regions with Bipolar Mass Outflow (1981) (0)
Introduction (2020) (0)
Yeats on Theatre. By Christopher Morash. Cambridge: Cambridge University Press, 2021; 250 pp. $99.99 cloth, e-book available. (2022) (0)
More Books: Ireland (2016) (0)
Bow-shock Associated with the Active Jet in NGC 4258 (1998) (0)
Error Management and ChildhoodSES/LHS (2018) (0)
Angel delight: Patrick Pearse and modernist experiment (2016) (0)
Submillimeter water masers and a circumstellar disk in Cepheus-A (2004) (0)
University of Southern Denmark Monitoring the Morphology of M 87 * in 2009-2017 with the Event Horizon (2020) (0)
First M 87 Event Horizon Telescope Results-V Physical Origin of the Asymmetric Ring Event Horizon (2019) (0)
Subarcsecond Submillimeter Continuum Observations of Orion KL you. Your matters (2014) (0)
Observational evidence of a possible collimating agent of the HH 1-2 outflow (1988) (0)
VizieR Online Data Catalog: 4yr 1.3mm VLBI observations of SgrA* with EHT (Fish+, 2016) (2016) (0)
VizieR Online Data Catalog: 1.3mm VLBI detections of M87 (Doeleman+, 2012) (2012) (0)
Sources of Outflow in the Orion BN/KL Region (1997) (0)
Estar: a Synthetic Aperture Microwave Radiometer for Remote Sensing a R Harvey, 'report on Passive Aperture Synthetic Mm-wave Imaging from Unmanned Airborne Vehicles', Report to Dera 6. Conclusions 5. System Calibration 4. Design Parameters for Sair Techniques (2000) (0)
The Size and Position of H 2 O Sources Associated with IR Stars. (1976) (0)
VLBI studies of the W3OH water maser (1977) (0)
The impact of VLBI on astrophysics and geophysics : proceedings of the 129th Symposium of the International Astronomical Union held in Cambridge, Massachusetts, U.S.A., May 10-15, 1987 (1988) (0)
The Circular Polarization of Saggitarius A* at Submillimeter Wavelengths (2012) (0)
Water Masers and the Structure of Outflow within 1 AU of a Young Stellar Object (2001) (0)
Infrared and radio observations of W51: Another Orion-KL at a distance of 7kpc (1981) (0)
Interferometric Observations of Galactic Hydroxyl Emission (1968) (0)
High Velocity CO Emission from Cepheus A (1979) (0)
Error management and life history strategy (2017) (0)
Architectures of madness (2020) (0)

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