Andrew Skumanich

Andrew Skumanich's AcademicInfluence.com Rankings

Andrew Skumanich

Physics

#6001

World Rank

#7902

Historical Rank

Astrophysics

#453

World Rank

#494

Historical Rank

Astronomy

#795

World Rank

#1383

Historical Rank

physics Degrees

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Physics

Andrew Skumanich's Degrees

PhD Astronomy University of California, Berkeley
Masters Physics University of California, Berkeley
Bachelors Physics University of California, Berkeley

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Andrew Skumanich'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

TIME SCALES FOR Ca II EMISSION DECAY, ROTATIONAL BRAKING, AND LITHIUM DEPLETION. (1971) (1279)
Stokes profile analysis and vector magnetic fields. I. Inversion of photospheric lines (1987) (246)
On the statistical description of inhomogeneities in the quiet solar atmosphere. I - Linear regression analysis and absolute calibration of multichannel observations of the Ca/+/ emission network (1975) (213)
The Possible Ascent of a Closed Magnetic System through the Photosphere (1995) (199)
Estimating the Sun's radiative output during the Maunder Minimum (1992) (179)
Stokes profile analysis and vector magnetic fields. VI: Fine scale structure of a sunspot (1993) (163)
Optical absorption spectra of carbon 60 thin films from 0.4 to 6.2 eV (1991) (154)
Active Region Magnetic Fields. I. Plage Fields (1997) (154)
Advanced Stokes polarimeter: a new instrument for solar magnetic field research (1992) (150)
Photothermal investigation of transport in semiconductors: Theory and experiment (1986) (133)
Small scale horizontal magnetic fields in the solar photosphere (1996) (127)
Transfer of line radiation in a magnetic field (1989) (121)
Stokes profile analysis and vector magnetic fields. V: The magnetic field structure of large sunspots observed with Stokes II (1990) (119)
The Calibration of the Advanced Stokes Polarimeter (1997) (110)
Optical Tomography of a Sunspot. II. Vector Magnetic Field and Temperature Stratification (2001) (108)
Urbach tail and gap states in hydrogenated a-SiC and a-SiGe alloys (1985) (108)
A three‐component model of the variability of the solar ultraviolet flux: 145–200 nM (1982) (95)
Evidence for a downward mass flux in the penumbral region of a sunspot (1997) (93)
The Evolution of Pores and the Development of Penumbrae (1998) (85)
Calibrated full disk solar H I Lyman-alpha and Lyman-beta profiles. (1978) (72)
The LPSP instrument on OSO 8. II - In-flight performance and preliminary results (1978) (71)
The sun as a star - Three-component analysis of chromospheric variability in the calcium K line (1984) (68)
Variability of the Lyman alpha flux with solar activity (1983) (68)
Pulsation modes in rapidly rotating stellar models based on the self-consistent field method (2009) (66)
On the value of 'αAR' from vector magnetograph data (1999) (65)
Photothermal modulation of the gap distance in scanning tunneling microscopy (1986) (62)
Optical Tomography of a Sunspot. I. Comparison between Two Inversion Techniques (1998) (60)
High-resolution spectra of solar magnetic features. I. Analysis of penumbral fine structure (1990) (58)
THE SUN IN A NON-CYCLING STATE (1992) (58)
On the Structure and Properties of Differentially Rotating, Main-Sequence Stars in the 1-2 M☉ Range (2007) (54)
VECTOR MAGNETIC FIELDS OF EMERGING SOLAR FLUX. I. PROPERTIES AT THE SITE OF EMERGENCE (1998) (54)
Stokes profile analysis and vector magnetic fields. IV: Synthesis and inversion of the chromospheric Mg I b lines (1988) (52)
On the Use of the Self-consistent-Field Method in the Construction of Models for Rapidly Rotating Main-Sequence Stars (2005) (48)
A model of a sunspot chromosphere based on OSO 8 observations (1982) (43)
A quantitative comparison of vector magnetic field measurement and analysis techniques (1994) (42)
Models for the Rapidly Rotating Be Star Achernar (2004) (41)
Dependence of Chromospheric Activity upon Age in Main-Sequence Stars: Additional Evidence. (1964) (41)
Absorption and Scattering in Nonlinear Optical Polymeric Systems (1993) (40)
Insitu investigation of transport in semiconductors: A contactless approach (1985) (38)
On the solar ultraviolet spectral irradiance during the Maunder Minimum (1995) (35)
A case study for micro‐grid PV: lessons learned from a rural electrification project in India (2014) (35)
A contactless method for investigating the thermal properties of thin films (1987) (33)
Evidence for supersonic downflows in the photosphere of a delta-sunspot (1994) (32)
Radiative transport in finite homogenous cylinders by the Monte Carlo technique (1969) (32)
Hydrogen ionization and n=2 population for model spicules and prominences (1971) (29)
Vector Spectropolarimetry with the Advanced Stokes Polarimeter (ASP) for Quantitative Solar Magnetometry (1994) (27)
Mode identification in rapidly rotating stars (2009) (27)
Emission cores in H and K lines (1968) (26)
The Physical Content of the Leading Orders of Principal Component Analysis of Spectral Profiles (2002) (25)
Converging Flows in the Penumbra of a δ Sunspot (2002) (25)
Evidence for a Common Magnetic Driver for Flares and Quiescent Coronae/Chromospheres (1985) (24)
Aspects of Long-Term Variability in Sun and Stars (1981) (23)
A study of excess H-alpha emission in chromospherically active M dwarf (1989) (22)
Light‐induced defects in hydrogenated amorphous silicon alloys (1988) (20)
On the magnetic and thermodynamic consequences of the return-flux sunspot model (1982) (18)
Gap state spectroscopy in a-SixC1−x:H alloys (1985) (17)
High-latitude spot and plage activity on the rapidly rotating M dwarf star Gliese 890 (1990) (16)
Magnesium II Doublet Profiles of Chromospheric Inhomogeneities at the Center of the Solar Disk (1973) (16)
Emission cores in H and K lines (1968) (16)
CSP: Developments in heat transfer and storage materials (2010) (16)
Indium shortage implications for the PV and LCD market: Technology and market considerations for maintaining growth (2009) (15)
Optical properties and correlation energy of defects in a-Ge:H (1983) (15)
Photothermal Deflection Spectroscopy: A Sensitive Absorption Technique for Organic Thin Films (1990) (15)
Fluorescence-induced Chromospheric H alpha Emission from the K Dwarf Component of V471 Tauri. I. The 1983 Epoch (1988) (15)
The formation of resonance lines in multidimensional media. II. Radiation operators and their numerical representation (1973) (15)
An ambiguity-free determination of J_Z in solar active regions (1998) (15)
On Thermal Convection in a Polytropic Atmosphere. (1955) (14)
The polarization properties of model sunspots - The broad-band polarization signature of the Schluter-Temesvary representation (1987) (14)
Rapid rotation and H-alpha emission anomalies among some members of the population of low-mass stars (1984) (14)
The physical effects of radiative transfer in multidimensional media including models of the solar atmosphere (1980) (14)
Thermalization Lengths and Mean Numbers of Scatterings for Line Photons (1971) (13)
Process and yield improvement based on fast in-line automatic defect classification (1999) (13)
The Sun as a Guide to Stellar Physics (2019) (12)
Evidence for external plasma around the K dwarf component of the eclipsing binary V471 Tauri (1991) (12)
Vector Magnetic Fields of Emerging Solar Flux (1998) (12)
Theoretical Line Intensities.VI. Milne-Eddington Curves of Growth for Non-Coherent Scattering (1968) (11)
CMP process development based on rapid automatic defect classification (1999) (11)
The vibrational overtone spectrum of a thin polymer film (1990) (11)
Stokes Profile Analysis and Vector Magnetic Fields. III. Extended Temperature Minima of Sunspot Umbrae as Inferred from Stokes Profiles of MG i lambda 4571 (1987) (11)
Enhanced defect detection capability using combined brightfield/darkfield imaging (1998) (10)
In-line SEM based ADC for advanced process control (2000) (10)
Observations of the Mesoscale Magnetic Structure of Sunspots (1992) (10)
CSP at a crossroads (2011) (10)
An empirical interpretation for the time evolution of the Caii K line (1974) (10)
Evolution of activity signatures during the main sequence phase (1986) (10)
Advanced interconnect process development utilizing wafer inspection with "on-the-fly" automatic defect classification (1999) (9)
The Evolution of Photospheric Magnetic Structures in Terms of the Size-Flux Relationship (1999) (9)
The contribution of the staebler-wronski effect to gap-state absorption in hydrogenated amorphous silicon (1983) (9)
EMISSION CORES IN H-- AND K-LINES. III. THE WILSON--BAPPU EFFECT. (1968) (9)
Substrate birefringence in coated optical storage disks. (1993) (9)
Some evidence on the evolution of the flare mechanism in dwarf stars (1986) (9)
Non-Radial Oscillations of Slowly Rotating Polytropes (1968) (8)
The effects of compensation of light-induced metastable defects in a-Si:H (1983) (8)
Advanced process development and control based on a fully automated SEM with ADC (1999) (8)
Interpolation Laws for Chromospheric Ca II (Mg II) K or H Line Source Function for Complete Redistribution. (1967) (7)
Defect reduction methodologies for damascene interconnect process development (1999) (7)
NLO Polymeric Waveguide Electro-Optic Phase Modulator (1992) (7)
Nonlinear optical polymeric waveguide electro-optic phase modulator (1993) (7)
Optimization of advanced design rule processes utilizing postdevelop patterned-wafer inspection (1999) (7)
Estimating Solar Forcing of Climate Change during the Maunder Minimum (1994) (7)
On the application of the generalized Newton-Raphson method in radiative transfer problems (1971) (7)
Use of test structures for Cu interconnect process development and yield enhancement (2000) (7)
The expansion opportunity for off-grid PV to go mainstream: Multiple case studies for village electrification and telecom power-up in India (2014) (7)
Velocity gradients across a flaring neutral line from Stokes II measurements. (1991) (7)
Enhanced defect capture and analysis based on automatic defect classification at post-lithographic inspection (2000) (6)
Automated fault detection and classification of etch systems using modular neural networks (2004) (6)
SUBSTRATE BIREFRINGENCE IN COATED OPTICAL DISKS (1993) (6)
Observation of light‐induced defect formation in hydrogenated amorphous silicon by subgap illumination (1989) (6)
On Bright-Dark Symmetry of Solar Granulation. (1955) (5)
A case study for micro-grid PV: Rural electrification in India (2013) (5)
THEORETICAL LINE INTENSITIES. VII. WAVELENGTH AND DEPTH DEPENDENCE OF LINE-BLANKETING EFFECTS FOR PURE ABSORPTION AND NON-COHERENT SCATTERING. (1969) (5)
The Advanced Stokes Polarimeter (1989) (5)
PV dispatchability and intermittency: Potential limitations to PV growth, and critical strategies (2011) (5)
Internal Motions Within Interstellar Clouds. (1952) (5)
Methodology for yield enhancement based on the analysis of defects at the lithographic step (1999) (4)
Yield enhancement based on defect reduction using on-the-fly automatic defect classification (2000) (4)
A Case Study for Micro-Grid PV: Lessons Learned from a Rural Electrification Project in India (2013) (4)
Comparison of pulsation modes in rapidly rotating polytropic and SCF models (2009) (4)
Radiative Transfer Diagnostics: Understanding Multilevel Transfer Calculations. I. Analysis of the Full Statistical Equilibrium Equations (1986) (4)
Rapid rotation and stellar activity in the triple system HD 165590 (1983) (4)
The solar-stellar connection: the relationship between flaring rates, flare power, and quiescent X-ray background (1988) (4)
Considerations for the use of PV and PT for sea water desalination: the viability of floating solar for this application (2020) (4)
On the Existence of a Purely Radiative Temperature Rise in the Solar Chromosphere (1970) (4)
Advanced process control based on lithographic defect inspection and reduction (2000) (3)
Lithography process control and optimization based on defect capture and reduction (2000) (3)
Comparison of the electrophotographic properties of a family of hydrazone charge-transport molecules (1990) (3)
The eclipsing variable GL Carinae. (1955) (3)
Highly sensitive absorption measurements in organic thin films and optical media (1991) (3)
PV technology roadmap: Market and manufacturing considerations (2010) (3)
Population Differences among Bright G Dwarfs and CA II Emission Reversals. (1965) (3)
Preliminary results from the HAO/NSO Advanced Stokes Polarimeter prototype observing run. (1991) (3)
Field azimuth disambiguation using ambiguity-free currents (1996) (3)
INTEGRAL EQUATION FOR THE LINE SOURCE FUNCTION AND ITS NUMERICAL SOLUTION. (1967) (2)
Constraints Imposed by the Square-root Spin-down Law on Coronal Wind Parameters (2019) (2)
Highly Sensitive Absorption Measurements in Organic Thin Films: Charge Transfer Complexes and Light-Induced Changes (1991) (2)
Stability and Performance Issues for Nonlinear Optical Chromophores, Polymers and Devices (1995) (2)
Physical models of solar and stellar spots (1992) (2)
Vibrational overtones in organic thin films: a novel structural probe (1993) (2)
Methodology for yield analysis based on targeted defect impact studies (2001) (2)
A comparison of inspection strategy models for optimized tool utilization (2000) (2)
The inference of vector magnetic fields from polarization measurements with limited spectral resolution (1985) (2)
Stokes Inversion in the Presence of Canopy-Like Structures and Unresolved Flux-Tubes (1992) (2)
Micro-grid and DG expansion: Key role of storage, projected global demand (2016) (2)
In-tool process control for advanced patterning based on integrated metrology and tool-level data stream analysis (2004) (2)
Methodology for targeted defect reduction and inspection optimization (2002) (2)
New growth markets for PV: Micro-grids in developing countries - A case study (2012) (2)
Radiative Transfer Diagnostics: Understanding Multi-Level Transfer Calculations (1985) (2)
Broadening of H and K Emission Cores and the Wilson-Bappu Effect. (1967) (1)
Influence of dangling bond defects on recombination in a-Si:H (1985) (1)
Periodic temporal phenomena in the solar chromosphere as observed from OSO-8 (LPSP). (1976) (1)
Methodology for defect impact studies under conditions of low electrical testing coverage (2002) (1)
Vibrational Overtone Spectra in Polymeric Thin Films (1991) (1)
I. Properties at the site of emergence (1998) (1)
Non-LTE diagnostics (1977) (1)
PV and Hybridization for Micro-Grid Applications: Need for Islanding Even with Grid Access (2011) (1)
Concerning population groups among G and K stars (1953) (1)
Vertical Integration in the PV Industry: 2010 and beyond (2009) (1)
Least squares inversion of Stokes profiles in the presence of velocity gradients (1985) (1)
The effect of line damping, magneto-optics and parasitic light on the derivation of sunspot vector magnetic fields (1985) (1)
‘オン‐ザ‐フライ’自動欠陥分類の使用による歩留向上 (1999) (1)
Surface light-induced changes in thin polymer films (1994) (1)
Doppler Shifts measured in 0 VI line from OSO-B observations above and in the vicinity of plage Mc Math 13738. (1978) (1)
A Comparison of the 19 April 1977 Two Ribbon Disk Flare with X-ray Flares Observed at the Limb (1979) (1)
Frequency-Dependent Line Source Functions. (1968) (1)
Chromospheric (Ca+KH) and Coronal (X-ray) Activity-Rotation Relations In Late-Type Spectroscopic Binaries and Main Sequence Stars. (1979) (1)
PV vs CPV and CSP: A Comparative Analysis of Technologies and Cost Roadmaps (2010) (1)
Line Formation in Multidimensional Media (1969) (1)
Materials considerations for PV markets: Guideposts for technology directions (2010) (1)
Optical Tomography of a Sunspot: Preliminary Results (1997) (1)
Line Formation in Multi-Dimensional Media. (1970) (1)
Mitigating Impurity Levels in Crystal Growth for c-Si: Implications for Improved Cell Efficiencies and Lower $/W Production (2011) (1)
On the Application of the Newton-Raphson Method to Non-Linear Line Transfer (1968) (1)
Modelling Solar Spectral Irradiance Variations at Ultraviolet Wavelengths (1984) (1)
Non-LTE effects for He I in early B type stars (1971) (1)
The rapidly-rotating field M-dwarf Gliese 890 (1984) (1)
Inversion Techniques Applied to Sunspot Spectropolarimetric Data (1997) (1)
First Results from the Advanced Stokes Polarimeter (1992) (1)
Early Results from the HAO/NSO Advanced Stokes Polarimeter (1993) (1)
Characteristic Relaxation Times for Non-LTE Atmospheres. (1975) (1)
In-Line Metrology for Cell Processing with a Focus on Micro-Cracks: Comparative Analysis and Cost Benefit (2010) (0)
On the Empirical Determination of Doppler Widths. (1968) (0)
Velocity and Field Gradient Corrections to the Rachkovsky Inversion for Magnetic Atmospheres (2001) (0)
Circumstellar CAII K Lines in g, K and M Giants and Supergiants (1970) (0)
A Model for the Penetration of Lyman Alpha in the Solar Chromosphere (1988) (0)
Chromospheric Activity as a Function of Age in Main-Sequence Stars (1966) (0)
On the Application of an Operator Formalism and the Generalized Newton-Raphson Method in Radiative Transfer (1971) (0)
Lawrence Berkeley Laboratory INFLUENCE OF DANGLING BOND DEFECTS ON RECOMBINATION IN a-Si:H TWO-WEEK LOAN (2013) (0)
Evolving paradigm for fab revenue optimization (2002) (0)
On the use of AI as a requirement for improved insolation forecasting accuracy to achieve optimized PV utilization (2021) (0)
Re-evaluating impurity levels in crystal growth for C-SI: Considerations for growing ingots with reduced impurities for higher cell efficiencies (2011) (0)
Fluorescence-induced surface inhomogeneities and ejection and trapping of plasma by the K dwarf component of V471 Tauri (1992) (0)
Plasma Generation for Strip Applications: Micro-Wave vs RF Generation - Comparisons, Advantages and Trade-Offs (2005) (0)
Material Characteristics of Sputtered Ta and TaAl Thin Films Used in Thermal Ink Jet Devices (1998) (0)
Extended Temperature Minima of Sunspot Umbrae (1986) (0)
PV in the Micro-Grid Context: Concepts and Specific International Case Studies as Models of Implementation (2010) (0)
Chromospheric response during the gamma ray flare on March 10, 1989. (1990) (0)
PV Module Manufacturing: Use of Proven Best Practices for Optimized Volume Production (2010) (0)
Properties of a Rapidly Rotating DME Star & of H-Alpha Anomalous Low-Mass Stars (1984) (0)
An empirical view of the chromospheric temperature structure above a sunspot umbra (1981) (0)
Thermo-convection in a polytropic atmosphere. (1955) (0)
Rapid Thermal Annealing Effects in InxGal−xAs/GaAs Strained-Layer Superlattices (1991) (0)
The Lyman α line in the solar chromosphere: penetrative model andapproximations. (1987) (0)
"Underluminous" Lyman-alpha Emission Associated with Active-Region Magnetic Canopy (1987) (0)
PV CPV CSP vs Storage: Intermittancy and Dispatchability as Potential Limitations To PV Growth (2011) (0)
Methodology for defect impact studies under conditions of low sampling statistics (2002) (0)
Developing Market Opportunities for Flexible Rooftop Applications of PV Using Flexible CIGS Technology: Market Considerations (2011) (0)
On The Broad-Band Circular Polarization Signature of Sunspots (1985) (0)
Vector field structure of a small sunspot (1994) (0)
On the Representation of the Lambda Operator in the Integral Equation (Green's Function) Approach to Non-LTE Spectral Line Formation. (1973) (0)
Drivers and a Case Study for Minigrid Implementations: Expanding Markets for PV (2012) (0)
Addressing socially destructive disinformation on the web with advanced AI tools: Russia as a case study (2023) (0)
OSO-8 Measurements of Velocity Signature of Flare Kernels (1990) (0)
Novel Back Surface Field (BSF) structure formation by modified solution derived nanocomposite (SDN) method for low cost new cell concept implementation (2010) (0)
Spatially-resolved investigation of transport in semiconductors: A photothermal deflection approach (1985) (0)
H alpha Variability on HK Aqr: Coronal Condensations or Plages? (1994) (0)
On the Universality of the Leading Orders of PCA. Spectral Eigenprofiles for the Sun. (2002) (0)
Methodology of a short-loop yield analysis for defect impact studies (2001) (0)
A Low-Cost Power-Smoothing Solution to Mitigate PV Intermittency (2013) (0)
Description and operation of CHISQMO, INVRTS, VOIGEN, VOIGTV, SMEAR, RUFF, AND POSCAR in the Stokes Analysis Program (1985) (0)
List of Contributors (2019) (0)
Magnetic Configuration of a Short-Lived Delta SPOT (1994) (0)
Pressure-Magnetic Field Scaling Law for Sunspots and Starspots (1990) (0)
A New Method for Initializing Non-LTE Statistical Equilibrium Problems. (1973) (0)
Extreme-Ultraviolet Observations of New Cycle Sunspots with the LPSP Spectrometer from OSO-8 (1977) (0)
THE EFFECT OF COMPENSATION ON PHOTO-INDUCED METASTABLE STATES IN a-Si:H (1983) (0)
The K2-dwarf V471 TAU: a Stellar Version of Solar Variability (1984) (0)
Stokes Asymmetries & Gradient Corrections to Milne-Eddington Atmospheres (2000) (0)
The developing need for AI and Machine Learning to optimize PV for increased adoption (2020) (0)
The effect of extremely rapid rotation on stellar activity: The case of gliese 890 (1986) (0)
The solar-stellar connection: the relationship between flaring rates, flare power and quiescent X-ray background. (1989) (0)
The need for AI to optimize dual-use PV installations to extract maximum value (2021) (0)
Synthesis and Inversion of the Chromospheric Mg I ????-Line Stokes Profiles (1987) (0)
Temperature-Field Relation and Current Distribution in the Return-Flux Model (1981) (0)
THE EFFECTS OF DOPANTS AND DEFECTS ON LIGHT-INDUCED METAASTABLE STATES IN HYDROGENATED AMORPHOUS SILICON (1983) (0)
Fluorescence-Induced Chromospheric Emission in the Binary V471 TAU (1986) (0)
Progress in Thin Film Encapsulation Technology – Advanced Moisture Barriers Films (2011) (0)
Novel TCO Deposition Technology for Improved PV-Cell Performance at Lower Cost (2010) (0)
Plasma Optimization Usinga Real-Time, Insitu Sensor BASED on Optical and RF Signatures: Advanced ETCH Applications (2005) (0)
SUNSPOT MODELING AND SCALING LAWS (2003) (0)
Absorption Line Profiles for Differentially Rotating Stellar Models (2007) (0)
Preface (2019) (0)
Magnetic Field Generation in the Overshoot Region Beneath the Solar Convection Zone (1987) (0)
Achieving significant cost reduction in solar through the targeted use of AI and Machine Learning (2021) (0)
On the Invariance of PCA Quick-Look Polarization Analysis to Different Magnetic Activity Samples (2003) (0)
Challenges and Prospects for the Future (2019) (0)
Optical Spectra of Fullerenes: C 60 a new amorphous semiconductor? (1992) (0)

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Andrew Skumanich is affiliated with the following schools:

Santa Clara University

Andrew Skumanich's Academic­Influence.com Rankings

Andrew Skumanich's Degrees

Why Is Andrew Skumanich Influential?

Andrew Skumanich's Published Works

Published Works

What Schools Are Affiliated With Andrew Skumanich?

Andrew Skumanich's AcademicInfluence.com Rankings