Bharat Ratra
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Indian university teacher
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Physics
Bharat Ratra's Degrees
- PhD Physics Stanford University
- Bachelors Physics Delhi University
Why Is Bharat Ratra Influential?
(Suggest an Edit or Addition)According to Wikipedia, Bharat Vishnu Ratra is an Indian-American physicist, theoretical cosmologist and astroparticle physicist who is currently a university distinguished professor of physics at Kansas State University. He is known for his work on dynamical dark energy and on the quantum-mechanical generation of energy density and magnetic field fluctuations during inflation.
Bharat Ratra'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
- The Cosmological Constant and Dark Energy (2002) (3745)
- Cosmology with a Time Variable Cosmological Constant (1988) (1278)
- Cosmological 'seed' magnetic field from inflation (1991) (527)
- HUBBLE PARAMETER MEASUREMENT CONSTRAINTS ON THE COSMOLOGICAL DECELERATION–ACCELERATION TRANSITION REDSHIFT (2013) (256)
- HUBBLE PARAMETER MEASUREMENT CONSTRAINTS ON THE REDSHIFT OF THE DECELERATION–ACCELERATION TRANSITION, DYNAMICAL DARK ENERGY, AND SPACE CURVATURE (2016) (248)
- Hubble Parameter and Baryon Acoustic Oscillation Measurement Constraints on the Hubble Constant, the Deviation from the Spatially Flat ΛCDM Model, the Deceleration–Acceleration Transition Redshift, and Spatial Curvature (2017) (182)
- Median Statistics, H0, and the Accelerating Universe (2000) (176)
- Cosmological Constraints from Hubble Parameter versus Redshift Data (2006) (132)
- Median Statistics and the Hubble Constant (2011) (113)
- Faraday rotation of the cosmic microwave background polarization by a stochastic magnetic field (2004) (102)
- DETERMINING THE HUBBLE CONSTANT FROM HUBBLE PARAMETER MEASUREMENTS (2016) (97)
- Non‐Gaussian Error Distribution of Hubble Constant Measurements (2003) (95)
- Cosmographic bounds on the cosmological deceleration-acceleration transition redshift in f(R) gravity (2014) (92)
- HUBBLE PARAMETER MEASUREMENT CONSTRAINTS ON DARK ENERGY (2012) (84)
- Constraints on dark energy dynamics and spatial curvature from Hubble parameter and baryon acoustic oscillation data (2018) (82)
- The Beginning and Evolution of the Universe (2007) (81)
- CMB temperature anisotropy from broken spatial isotropy due to a homogeneous cosmological magnetic field (2008) (81)
- CDM cosmogony in an open universe (1994) (78)
- Baryon acoustic oscillation, Hubble parameter, and angular size measurement constraints on the Hubble constant, dark energy dynamics, and spatial curvature (2019) (72)
- Supernova Ia Constraints on a Time-variable Cosmological “Constant” (1999) (71)
- Using the Tilted flat-ΛCDM and the Untilted Non-flat ΛCDM Inflation Models to Measure Cosmological Parameters from a Compilation of Observational Data (2017) (70)
- Cosmological Constraints from Compact Radio Source Angular Size versus Redshift Data (2002) (66)
- Binned Cosmic Microwave Background Anisotropy Power Spectra: Peak Location (2001) (63)
- Planck 2015 Constraints on the Nonflat ϕCDM Inflation Model (2017) (63)
- Primordial magnetic field limits from cosmological data (2010) (62)
- Observational Constraints on the Tilted Spatially Flat and the Untilted Nonflat ϕCDM Dynamical Dark Energy Inflation Models (2018) (59)
- Hubble parameter data constraints on dark energy (2011) (57)
- Binned Hubble parameter measurements and the cosmological deceleration–acceleration transition (2013) (56)
- CMB anisotropies due to cosmological magnetosonic waves (2006) (55)
- Gravitational radiation from primordial helical inverse cascade magnetohydrodynamic turbulence (2008) (55)
- Constraints on Scalar-Field Dark Energy from the Cosmic Lens All-Sky Survey Gravitational Lens Statistics (2004) (52)
- Observational constraints on the tilted flat-XCDM and the untilted nonflat XCDM dynamical dark energy inflation parameterizations (2018) (51)
- Gravitational Radiation from Primordial Helical Inverse Cascade MHD Turbulence (2008) (51)
- Measuring the Hubble constant and spatial curvature from supernova apparent magnitude, baryon acoustic oscillation, and Hubble parameter data (2018) (50)
- Radio Galaxy Redshift-Angular Size Data Constraints on Dark Energy (2002) (50)
- CONSTRAINING DARK ENERGY WITH GAMMA-RAY BURSTS (2009) (49)
- Observational constraints on non-flat dynamical dark energy cosmological models (2013) (48)
- Large-scale structure in COBE-normalized cold dark matter cosmogonies (1997) (48)
- Polarized cosmological gravitational waves from primordial helical turbulence. (2005) (48)
- COBE-DMR-normalized Open Cold Dark Matter Cosmogonies (1996) (48)
- Planck 2015 Constraints on the Non-flat ΛCDM Inflation Model (2018) (47)
- Quantum Mechanics of Inflation (1985) (47)
- UCSB South Pole 1994 Cosmic Microwave Background Anisotropy Measurement Constraints on Open and Flat-Λ Cold Dark Matter Cosmogonies (1996) (46)
- Constraints on Dark Energy from Galaxy Cluster Gas Mass Fraction versus Redshift Data (2008) (46)
- Nonflat time-variable dark energy cosmology (2013) (44)
- Median Statistics and the Mass Density of the Universe (2003) (43)
- Superstring propagation in curved superspace in the presence of background super Yang-Mills fields (1986) (43)
- CONSTRAINTS ON NON-FLAT COSMOLOGIES WITH MASSIVE NEUTRINOS AFTER PLANCK 2015 (2016) (42)
- Evolution of inflation-generated magnetic field through phase transitions (2012) (41)
- Cosmological Model Parameter Determination from Satellite-acquired Supernova Apparent Magnitude versus Redshift Data (2000) (41)
- Median Statistics Estimate of the Distance to the Galactic Center (2017) (40)
- Gaussianity of Degree-Scale Cosmic Microwave Background Anisotropy Observations (2001) (39)
- Galaxy cluster number count data constraints on cosmological parameters (2011) (39)
- Supernova Ia and Galaxy Cluster Gas Mass Fraction Constraints on Dark Energy (2006) (38)
- Planck 2015 constraints on spatially-flat dynamical dark energy models (2018) (38)
- COBE DMR-normalized open inflation cold dark matter cosmogony (1995) (37)
- PHASE TRANSITION GENERATED COSMOLOGICAL MAGNETIC FIELD AT LARGE SCALES (2009) (36)
- Using Pantheon and DES supernova, baryon acoustic oscillation, and Hubble parameter data to constrain the Hubble constant, dark energy dynamics, and spatial curvature (2021) (36)
- Cosmic Microwave Background Anisotropy Constraints on Open and Flat-Λ Cold Dark Matter Cosmogonies from UCSB South Pole, ARGO, MAX, White Dish, and SuZIE Data (1999) (35)
- Gravitational lensing effects in a time-variable cosmological ‘constant’ cosmology (1992) (34)
- Quasar X-ray and UV flux, baryon acoustic oscillation, and Hubble parameter measurement constraints on cosmological model parameters (2019) (34)
- Constraints on dark energy from the lookback time versus redshift test (2009) (33)
- Gravitational radiation from primordial helical magnetohydrodynamic turbulence. (2008) (32)
- Window Function for Noncircular Beam Cosmic Microwave Background Anisotropy Experiment (2001) (31)
- Inflation in a closed universe (2017) (31)
- Cosmological constraints from H ii starburst galaxy apparent magnitude and other cosmological measurements (2020) (30)
- Cosmic Microwave Background Anisotropy in COBE DMR-normalized Open and Flat-Λ Cold Dark Matter Cosmogonies (1997) (29)
- Constraints on dark energy from H II starburst galaxy apparent magnitude versus redshift data (2011) (29)
- Cosmic Microwave Background Anisotropy Correlation Function and Topology from Simulated Maps for MAP (1997) (28)
- Using quasar X-ray and UV flux measurements to constrain cosmological model parameters (2020) (28)
- Numerical simulations of the decay of primordial magnetic turbulence (2010) (28)
- Galaxy Cluster Gas Mass Fraction and Hubble Parameter versus Redshift Constraints on Dark Energy (2007) (28)
- Looking for Cosmological Alfvén Waves in Wilkinson Microwave Anisotropy Probe Data (2004) (25)
- Spherically Symmetric Classical Solutions in SU(2) Gauge Theory With a Higgs Field (1988) (24)
- Using SPT polarization, Planck 2015, and non-CMB data to constrain tilted spatially-flat and untilted nonflat ΛCDM , XCDM, and ϕCDM dark energy inflation cosmologies (2019) (24)
- Constraints on cosmological parameters from gamma-ray burst peak photon energy and bolometric fluence measurements and other data (2020) (23)
- Constraints on Scalar-Field Dark Energy from Galaxy Cluster Gas Mass Fraction versus Redshift Data (2004) (23)
- Determining the range of validity of quasar X-ray and UV flux measurements for constraining cosmological model parameters (2020) (22)
- First study of reionization in the Planck 2015 normalized closed ΛCDM inflation model (2017) (22)
- Cosmological constraints from higher redshift gamma-ray burst, H ii starburst galaxy, and quasar (and other) data (2020) (22)
- Constraints on dark energy from the Lyα forest baryon acoustic oscillations measurement of the redshift 2.3 Hubble parameter (2012) (21)
- Galaxy cluster angular-size data constraints on dark energy (2011) (21)
- CBR Anisotropy in an Open Inflation, CDM Cosmogony (1994) (21)
- Inflation and accelerated expansion tensor-vector-scalar cosmological solutions (2006) (20)
- Standardizing Platinum Dainotti-correlated gamma-ray bursts, and using them with standardized Amati-correlated gamma-ray bursts to constrain cosmological model parameters. (2022) (19)
- NON-GAUSSIAN ERROR DISTRIBUTIONS OF LMC DISTANCE MODULI MEASUREMENTS (2015) (19)
- CONSTRAINTS ON DARK ENERGY MODELS FROM RADIAL BARYON ACOUSTIC SCALE MEASUREMENTS (2008) (19)
- CONSTRAINTS ON DARK ENERGY FROM BARYON ACOUSTIC PEAK AND GALAXY CLUSTER GAS MASS MEASUREMENTS (2008) (19)
- MAX 4 and MAX 5 Cosmic Microwave Background Anisotropy Measurement Constraints on Open and Flat-Λ Cold Dark Matter Cosmogonies (1997) (18)
- Galactic Foreground Constraints from the Python V Cosmic Microwave Background Anisotropy Data (2003) (18)
- The impact of a new median statistics $H_0$ prior on the evidence for dark radiation (2012) (18)
- Cosmic background radiation anisotropy in an open inflation, cold dark matter cosmogony (1994) (18)
- Do gamma-ray burst measurements provide a useful test of cosmological models? (2021) (17)
- Effects of Foreground Contamination on the Cosmic Microwave Background Anisotropy Measured by MAP (2001) (17)
- Using Sunyaev-Zeldovich Infrared Experiment (SuZIE) Arcminute-Scale Cosmic Microwave Background Anisotropy Data to Probe Open and Flat Λ Cold Dark Matter Cosmogonies (1997) (17)
- Using SuZIE arcminute-scale CMB anisotropy data to probe open and flat-\Lambda CDM cosmogonies (1997) (17)
- Non-Gaussian error distribution of 7Li abundance measurements (2014) (16)
- Cosmic Microwave Background Anisotropy Measurement from Python V (2001) (16)
- Using lower-redshift, non-CMB, data to constrain the Hubble constant and other cosmological parameters (2022) (16)
- Cosmological constraints from large-scale structure growth rate measurements (2013) (16)
- Galactic Foregrounds in Owens Valley Radio Observatory and UCSB South Pole 1994 Cosmic Microwave Background Anisotropy Data (2001) (15)
- Time and distance constraints on accelerating cosmological models (2010) (15)
- Standardizing Dainotti-correlated gamma-ray bursts, and using them with standardized Amati-correlated gamma-ray bursts to constrain cosmological model parameters (2021) (15)
- COBE DMR-normalized Dark Energy Cosmogony (2003) (15)
- Median statistics cosmological parameter values (2013) (15)
- Python I, II, and III Cosmic Microwave Background Anisotropy Measurement Constraints on Open and Flat-Λ Cold Dark Matter Cosmogonies (1999) (15)
- ARGO CMB Anisotropy Measurement Constraints on Open and Flat-Lambda CDM Cosmogonies (1998) (15)
- Do quasar X-ray and UV flux measurements provide a useful test of cosmological models? (2021) (14)
- CMB distance priors revisited: effects of dark energy dynamics, spatial curvature, primordial power spectrum, and neutrino parameters (2019) (13)
- First study of reionization in tilted flat and untilted non-flat dynamical dark energy inflation models (2019) (13)
- Cosmological Parameter Determination from Counts of Galaxies (2001) (13)
- Median Statistics Analysis of Deuterium Abundance Measurements and Spatial Curvature Constraints (2018) (13)
- Erratum: Gravitational radiation from primordial helical inverse cascade magnetohydrodynamic turbulence [Phys. Rev. D 78,123006 (2008)] (2009) (12)
- Using White Dish CMB Anisotropy Data to Probe Open and Flat-Λ CDM Cosmogonies (1997) (12)
- Looking for Cosmological Alfven Waves in WMAP Data (2004) (12)
- Planck 2015 Constraints on the Non-flat XCDM Inflation Model (2018) (12)
- Neutrino mass limit from galaxy cluster number density evolution (2005) (11)
- Standardizing reverberation-measured Mg II time-lag quasars, by using the radius-luminosity relation, and constraining cosmological model parameters (2021) (11)
- Impact of H[subscript 0] prior on the evidence for dark radiation (2012) (11)
- Quark-hadron phase transition in a chameleon Brans-Dicke model of brane gravity (2012) (10)
- Do reverberation-measured Hβ quasars provide a useful test of cosmology? (2021) (9)
- Cosmological constraints from HII starburst galaxy, quasar angular size, and other measurements (2021) (9)
- FORECASTING COSMOLOGICAL PARAMETER CONSTRAINTS FROM NEAR-FUTURE SPACE-BASED GALAXY SURVEYS (2012) (9)
- Resource Letter: BE-1: The Beginning and Evolution of the Universe (2007) (8)
- Median statistics estimate of the galactic rotational velocity (2018) (8)
- MAX 4 and MAX 5 CMB Anisotropy Measurement Constraints on Open and Flat-A CDM Cosmogonies (1997) (7)
- CMB ANISOTROPY CONSTRAINTS ON FLAT-Λ AND OPEN CDM COSMOGONIES FROM DMR, UCSB SOUTH POLE, PYTHON, ARGO, MAX, WHITE DISH, OVRO, AND SuZIE DATA (2002) (7)
- USING THE TILTED FLAT-ΛCDM AND THE NON-FLAT ΛCDM INFLATION MODELS TO MEASURE COSMOLOGICAL PARAMETERS FROM A COMPILATION OF OBSERVATIONAL DATA (2018) (6)
- Dark matter deficient galaxies in the Illustris flat-$\Lambda$CDM model structure formation simulation (2018) (6)
- Standardizing reverberation-measured C iv time-lag quasars, and using them with standardized Mg ii quasars to constrain cosmological parameters (2022) (6)
- Consistency study of high- and low-accreting Mg ii quasars: No significant effect of the Fe ii to Mg ii flux ratio on the radius-luminosity relation dispersion (2022) (6)
- Cosmological magnetic braking and the formation of high-redshift, super-massive black holes (2019) (6)
- Gamma-ray burst data strongly favour the three-parameter fundamental plane (Dainotti) correlation over the two-parameter one. (2022) (5)
- Publisher's Note: Nonflat time-variable dark energy cosmology [Phys. Rev. D 88, 123513 (2013)] (2013) (5)
- Tentative Appraisal of Compatibility of Small-Scale Cosmic Microwave Background Anisotropy Detections in the Context of COBE-DMR-normalized Open and Flat-Λ Cold Dark Matter Cosmogonies (1995) (5)
- CMB anisotropy in COBE-DMR-normalized open CDM cosmogony (1995) (4)
- Current data are consistent with flat spatial hypersurfaces in the ΛCDM cosmological model but favor more lensing than the model predicts (2022) (4)
- Observationally constrainable free parameters of scalar field inflation models (1991) (4)
- Accretion disks, quasars and cosmology: meandering towards understanding (2022) (3)
- Distance and time constraints on accelerating cosmological models (2010) (3)
- OVRO CMB anisotropy measurement constraints on flat-Lambda and open CDM cosmogonies (2002) (3)
- Quasar UV/X-ray relation luminosity distances are shorter than reverberation-measured radius-luminosity relation luminosity distances (2022) (2)
- Python I, II, and III CMB Anisotropy, Measurement Constraints on Open and Flat-A CDM Cosmogonies (1999) (2)
- ARGO Cosmic Microwave Background Anisotropy Measurement Constraints on Open and Flat-Λ Cold Dark Matter Cosmogonies (1999) (2)
- Tilted spatially nonflat inflation (2022) (2)
- Using SPTpol , Planck 2015 , and non-CMB data to constrain tilted spatially-flat and untilted non-flat Λ CDM , XCDM , and φ CDM dark energy inflation cosmologies (2019) (1)
- H 0 = 69 . 8 ± 1 . 3 km s − 1 Mpc − 1 , Ω m 0 = 0 . 288 ± 0 . 017 , and other constraints from lower-redshift, non-CMB and non-distance-ladder, expansion-rate data (2023) (1)
- Gaussian processes, median statistics, Milky Way rotation curves (2019) (1)
- Observational constraints on the tilted flat-XCDM and the untilted nonflat XCDM dynamical dark energy inflation parameterizations (2019) (0)
- Title : Cosmological-model-parameter determination from satellite-acquired type Ia and IIP Supernova Data (2000) (0)
- C O ] 8 N ov 2 01 7 Inflation in a closed universe (2018) (0)
- 06 01 15 3 v 2 1 9 M ar 2 00 6 Inflation and accelerated expansion TeVeS cosmological solutions (2022) (0)
- C M B Tem perature A nisotropy from B roken SpatialIsotropy due to an H om ogeneous C osm ologicalM agnetic Field (2008) (0)
- Large-scale structure in COBE-normalized cold darkmatter (2007) (0)
- COLD DARK MATTER COSMOGNOY IN AN OPEN UNIVERSE (1994) (0)
- $H_0=69.8\pm1.3$ $\rm{km \ s^{-1} \ Mpc^{-1}}$, $\Omega_{m0}=0.288\pm0.017$, and other constraints from lower-redshift, non-CMB, expansion-rate data (2023) (0)
- Kansas Advanced Semiconductor Project (2007) (0)
- Median statistics estimate of the galactic rotational velocity (2018) (0)
- Large-scale structure growth rate measurement cosmological constraints (2013) (0)
- ARGO CMB Anisotropy Measurement Constraints on Open and Flat-A CDM Cosmogonies (1998) (0)
- Ja n 20 03 Cosmic Microwave Background Anisotropy Measurement From Python (0)
- Cosmological Gravitational Waves from Primordial Helical Turbulence (2005) (0)
- J ul 2 00 2 The Cosmological Constant and Dark Energy (2002) (0)
- INFLATION IN A QUARTIC POTENTIAL SCALAR FIELD MODEL (1989) (0)
- TOPOLOGY AND CORRELATION FUNCTION IN SIMULATED CMS ANISOTROPIES FROM MAP IN COM COSMOGONIES (1997) (0)
- Galaxy cluster number count data constraints on cosmological parameters (2012) (0)
- Final Technical Report (2020) (0)
- ON SPATIALLY-FLAT DYNAMICAL DARK ENERGY MODELS (2018) (0)
- Heavy Quark and Neutrino Physics. Final report, 2011-2-14 (2014) (0)
- Updates on SuZIE and Python (1998) (0)
- Observational constraints on non-flat dynamical dark energy cosmological models (2015) (0)
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