Professor

Director of International Collaborations

**Primary Research**: Computational Sciences and Informatics Astrophysics

**Office**: 111 Planetary Hall

**Phone**: 703-993-3619

**Office Hours**: Wednesdays 3:00–4:00 PM. Please make an appointment first.

**Personal Website**: http://mason.gmu.edu/~pbecker/

#### Current Research Interests

My research interests include a variety of topics in theoretical astrophysics, mathematical physics, and numerical analysis. Some particular topics of interest follow:

* Modeling the dynamical structure and radiative properties of the accretion columns that form over the magnetic poles in binary X-ray pulsars.

* Studying the production of relativistic outflows from the vicinity of black holes as a result of shock-driven particle acceleration occurring in the surrounding accretion disk.

* Analytical and numerical modeling of the trans-relativistic acceleration of cosmic rays and solar flare particles due to Fermi processes.

* Studies of time-dependent particle acceleration in astrophysical plasmas.

#### Teaching Interests

CSI : General Astronomy

Thermal Physics

Computational Astrophysics

High Energy Astrophysics

Relativity and Cosmology

**Address:**

College of Science, MSN 5C3

Research Hall, Room 269

George Mason University, Fairfax, VA, 22030-4444

Telephone: 703-993-3619

Fax: 703-993-1993

**Education:**

Ph.D. Astrophysics, University of Colorado, Boulder, CO, 1987.

M.S. Astrophysics, University of Colorado, Boulder, CO, 1985.

B.A. Physics and Mathematics, Rutgers University, New Brunswick, NJ, 1982.

Thesis Title: ``Photohydrodynamical Processes Near Compact Objects''

Thesis Advisor: Dr. Mitchell C. Begelman

Professional Affiliations: American Astronomical Society, Mathematical Association of America

**Professional Employment:**

Associate Director, School of Physics, Astronomy, and Computational Sciences, College of Science, George Mason University, Fall 2010 - Present

Associate Dean for Graduate Programs, College of Science, George Mason University, Spring 2006 - Fall 2009

Professor, Department of Computational & Data Sciences, and Department of Physics & Astronomy, George Mason University, Fall 2005 - Present

Associate Dean for Graduate Studies, School of Computational Sciences, George Mason University, Spring 2003 - Spring 2006

Assistant Dean for Graduate Studies, School of Computational Sciences, George Mason University, Fall 2000 - Spring 2003

Associate Professor, School of Computational Sciences, and Department of Physics & Astronomy, George Mason University, Fall 1997 - Fall 2005

Graduate Program Coordinator, School of Computational Sciences (formerly Institute for Computational Sciences and Informatics), George Mason University, Fall 1996 - Present

Assistant Professor, Department of Physics and Astronomy and Institute for Computational Sciences and Informatics, George Mason University, Fall 1992 - Fall 1997

NRC/NRL Cooperative Research Associate, Naval Research Laboratory, Space Science Division, September 1989 - August 1992

Postdoctoral Fellow, University of Virginia, Department of Astronomy, September 1987 - August 1989

Research Assistant, Joint Institute for Laboratory Astrophysics, University of Colorado at Boulder, June 1984 - August 1987

Teaching Assistant, Astrophysical, Planetary, and Atmospheric Sciences Department of the University of Colorado at Boulder, September 1982 - May 1984

**Courses Taught at George Mason University:**

ASTR 111 *Introduction to Modern Astronomy I*;

PHYS 303 *Classical Mechanics*;

PHYS 307 *Thermal Physics*;

ASTR 428/PHYS 428 *Relativity and Cosmology*;

CSI 661/ASTR 530 *Astrophysics*;

CSI 764/ASTR 764 *Computational Astrophysics*;

CSI 765/ASTR 765 *High-Energy and Accretion Astrophysics*;

CSI 766/ASTR 766 *Relativity and Cosmology*.

**External Grants and Awards:**

NAVY/ASEE Summer Faculty Research Fellowship Award, Peter Becker (PI); total award: $16,600; award period: Summer 2006.

NAVY/ASEE Summer Faculty Research Fellowship Award, Peter Becker (PI); total award: $16,600; award period: Summer 2005.

NAVY/ASEE Summer Faculty Research Fellowship Award, Peter Becker (PI); total award: $16,600; award period: Summer 2004.

NAVY/ASEE Summer Faculty Research Fellowship Award, Peter Becker (PI); total award: $16,000; award period: Summer 2003.

NAVY/ASEE Summer Faculty Research Fellowship Award, Peter Becker (PI); total award: $15,600; award period: Summer 2002.

NAVY/ASEE Summer Faculty Research Fellowship Award, Peter Becker (PI); total award: $15,000; award period: Summer 2001.

NASA/ASEE Summer Faculty Research Fellowship Award, Peter Becker (PI); total award: $12,000; award period: Summer 2000.

NASA/ASEE Summer Faculty Research Fellowship Award, Peter Becker (PI); total award: $12,000; award period: Summer 1999.

NASA CGRO Cycle 4, ``OSSE Observations of Blazars,'' Peter Becker (Co-I); Neil Johnson (PI); total award: $25,000; award period: 1994-1995.

NASA CGRO Cycle 4, ``Modeling of Novae: Nucleosynthesis of Gamma-Ray Emitters Observable by OSSE and COMPTEL,'' Peter Becker (Co-I); Kent Wood (PI); total award: $21,000; award period: 1994-1995.

ONR Mathematical Sciences, ``Analytical and Numerical Modeling of Astrophysical X-Ray and Gamma-Ray Transients,'' Peter Becker (PI); total award: $50,000; award period 1993-1994.

NASA CGRO Phase 3, ``OSSE Observations of Blazars,'' Peter Becker (Co-I); Neil Johnson (PI); total award: $36,400; award period: 1993-1994.

NASA CGRO Phase 3, ``OSSE Spectral, Timing, and Monitoring Observations of Cygnus X-1,'' Peter Becker (Co-I); Mark Leising (PI); total award: $30,000; award period: 1993-1994.

NASA CGRO Phase 2, ``High-Energy Emission from Hot Accretion Disks in Active Galactic Nuclei,'' Peter Becker (Co-I); Menas Kafatos (PI); total award: $84,883; award period: 1992-1993.

NASA CGRO Phase 2, ``Nucleosynthesis of Gamma-Ray Emitters Observable by OSSE and COMPTEL,'' Peter Becker (Co-I); Kent Wood (PI); total award: $50,000; award period: 1992-1993.

NASA CGRO Phase 1, ``Modeling of Novae,'' Peter Becker (Co-I); Kent Wood (PI); total award: $46,000; award period: 1991-1992.

NASA Astrophysical Theory, ``Modeling of Accretion Flows Onto White Dwarfs,'' Peter Becker (Co-I); Kent Wood (PI); total award: $126,100; award period: 1991-1992.

**Graduate Research Assistantships Directed:**

``New Methods for Solving Integrodifferential Equations of Radiative Transfer,'' 1998-1999, George Mason University, used to support CSI student Ben Crain.

``Fourier Transform X-ray Imaging,'' 1997-1998, George Mason University (Interdisciplinary Graduate Research Assistantship), used to support CSI student Amin Jazaeri.

``New Methods for Solving Integrodifferential Equations of Radiative Transfer,'' 1997-1998, George Mason University, used to support CSI student Ben Crain.

``Fourier Transform X-ray Imaging,'' 1996-1997, George Mason University, used to support CSI student Prasad Subramanian.

``Numerical Modeling of Thermonuclear Nova Explosions,'' 1995-1996, George Mason University, used to support CSI student John Tan.

``Analytical Modeling of Self-Consistent Comptonization,'' 1994-1995, George Mason University, used to support CSI student Prasad Subramanian.

``Time-Dependent Comptonization in Impulsively-Heated Plasmas,'' 1993-1994, George Mason University, used to support CSI student Prasad Subramanian.

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Click here to see Becker's Publications and Talks.

**REFEREED PUBLICATIONS:** *Click on a title for download options...*

Becker, P. A., Klochkov, D., Schonherr, G., Nishimura, O., Ferrigno, C., Caballero, I., Kretschmar, P., Wolff, M. T., Wilms, J., & Staubert, R., "Spectral Formation in Accreting X-Ray Pulsars: Bimodal Variation of the Cyclotron Energy with Luminosity," 2012, Astronomy & Astrophysics, in press.

Subramanian, P., Shukla, A, & Becker, P. A. "TeV Blazar Variability: The Firehose Instability?," 2012, Monthly Notices of the Royal Astronomical Society, in press.

Becker, P. A., Das, S., & Le, T., "Diffusive Particle Acceleration in Shocked, Viscous Accretion Disks: Green's Function Energy Distribution," 2011, Astrophysical Journal, volume 743, page 47.

Ferrigno, C., Falanga, M., E. Bozzo, Becker, P. A., Klochkov, D., & Santangelo, A., "4U 0115+63: Phase Lags and Cyclotron Resonant Scattering," 2011, Astronomy & Astrophysics, volume 532, page A76.

Becker, P. A., "Infinite Integrals of Whittaker and Bessel Functions with Respect to their Indices," 2009, Journal of Mathematical Physics, volume 50, page 123515.

Das, S., Becker, P. A., & Le, T., "Dynamical Structure of Viscous Accretion Disks with Shocks," 2009, Astrophysical Journal, volume 702, page 649.

Ferrigno, C., Becker, P. A., Segreto, A., Mineo, T., & Santangelo, A., "Study of the Accreting Pulsar 4U 0115+63 using a Bulk and Thermal Comptonization Model," 2009, Astronomy & Astrophysics, volume 498, page 825.

Becker, P. A., Das, S., & Le, T., "Particle Acceleration and the Formation of Relativistic Outflows in Viscous Accretion Disks with Shocks," 2008, Astrophysical Journal Letters, volume 677, page L93.

Becker, P. A., "Spectral Formation in X-Ray Pulsars and Associated Identities Involving the Laguerre Polynomials," 2008, Journal of Mathematical Physics, volume 49, page 33506.

Le, T., & Becker, P. A., "Particle Acceleration in Advection-Dominated Accretion Disks with Shocks: Green's Function Energy Distribution," 2007, Astrophysical Journal, volume 661, page 416.

Becker, P. A., & Wolff, M. T., "Thermal and Bulk Comptonization in Accretion Powered X-Ray Pulsars," 2007, Astrophysical Journal, volume 654, page 435.

Becker, P. A., Le, T., & Dermer, C. D., "Time-Dependent Stochastic Particle Acceleration in Astrophysical Plasmas: Exact Solutions Including Momentum-Dependent Escape," 2006, Astrophysical Journal, volume 647, page 539.

Subramanian, P., & Becker, P. A., "Further Constraints on Electron Acceleration in Solar Noise Storms," 2006, Solar Physics, volume 237, page 185.

Kafatos, M., Becker, P. A., & Boybeyi, Z., "Computational Sciences: At the Intersection of Science and Engineering," 2006, Turkish Journal of Electrical Engineering and Computer Science, volume 14, page 77.

Wolff, M. T., Becker, P. A., Ray, P. S., & Wood, K. S., "A Strong X-Ray Burst from the Low Mass X-Ray Binary EXO 0748-676," 2005, Astrophysical Journal, volume 632, page 1099.

Le, T., & Becker, P. A., "Particle Acceleration and the Production of Relativistic Outflows in Advection-Dominated Accretion Disks with Shocks," 2005, Astrophysical Journal, volume 632, page 476.

Becker, P. A., & Wolff, M. T., "Spectral Formation in X-Ray Pulsars: Bulk Comptonization in the Accretion Shock," 2005, Astrophysical Journal, volume 630, page 465.

Becker, P. A., "Exact Solution for the Hypergeometric Green's Function Describing Spectral Formation in X-Ray Pulsars," 2005, Journal of Mathematical Physics, volume 46, page 53511.

Subramanian, P., & Becker, P. A., "Noise Storm Continua: Power Estimates for Electron Acceleration," 2005, Solar Physics, volume 225, page 91.

Becker, P. A., & Subramanian, P., "Restrictions on the Physical Prescription for the Viscosity in Advection-Dominated Accretion Disks," 2005, Astrophysical Journal, volume 622, page 520.

Becker, P. A., & Wolff, M. T., "Spectral Formation in X-Ray Pulsar Accretion Columns," 2005, Astrophysical Journal Letters, volume 621, page L45.

Le, T., & Becker, P. A., "A Self-Consistent Model for the Formation of Relativistic Outflows in Advection-Dominated Accretion Disks with Shocks," 2004, Astrophysical Journal Letters, volume 617, page L25.

Becker, P. A., "On the Integration of Products of Whittaker Functions with Respect to the Second Index," 2004, Journal of Mathematical Physics, volume 45, page 761.

Subramanian, P., Pujari, B. S., & Becker, P. A., "Angular Momentum Transport in Quasi-Keplerian Accretion Disks," 2004, Journal of Astrophysics & Astronomy, volume 25, page 81.

Titarchuk, L., Kazanas, D., & Becker, P. A., "Broad Redshifted Line as a Signature of Outflow," 2003, Astrophysical Journal, volume 598, page 411.

Becker, P. A., "Exact Solution for the Green's Function Describing Time-Dependent Thermal Comptonization," 2003, Monthly Notices of the Royal Astronomical Society, volume 343, page 215.

Becker, P. A., & Le, T., "Inner Boundary Conditions for Advection-Dominated Accretion onto Black Holes," 2003, Astrophysical Journal, volume 588, page 408.

Gopal-Krishna, Subramanian, P., Wiita, P. J., & Becker, P. A., "Are the Hotspots of Radio Galaxies the Sites of *In-Situ* Acceleration of Relativistic Particles?," 2001, Astronomy & Astrophysics, volume 377, page 827.

Becker, P. A., Subramanian, P., & Kazanas, D., "Relativistic Outflows from Advection-Dominated Accretion Disks around Black Holes," 2001, Astrophysical Journal, volume 552, page 209.

Becker, P. A., & Kazanas, D., "Exact Expressions for the Critical Mach Numbers in the Two-Fluid Model of Cosmic-Ray Modified Shocks," 2001, Astrophysical Journal, volume 546, page 429.

Becker, P. A., "A New Perturbative Technique for Solving Integro-Partial Differential Equations," 1999, Journal of Mathematical Physics, volume 40, page 5224.

Subramanian, P., Becker, P. A., & Kazanas, D., "Formation of Relativistic Outflows in Shearing Black Hole Accretion Coronae," 1999, Astrophysical Journal, volume 523, page 203.

Becker, P. A., "Dynamical Structure of Radiation-Dominated Pulsar Accretion Shocks," 1998, Astrophysical Journal, volume 498, page 790.

Becker, P. A., "Normalization Integrals of Orthogonal Heun Functions," 1997, Journal of Mathematical Physics, volume 38, page 3692.

Subramanian, P., Becker, P. A., & Kafatos, M., "Ion Viscosity Mediated by Tangled Magnetic Fields: An Application to Black Hole Accretion Disks," 1996, Astrophysical Journal, volume 469, page 784.

Becker, P. A., & Kafatos, M., "Implications of Gamma-Ray Transparency Constraints in Blazars: Minimum Distances and Gamma-Ray Collimation," 1995, Astrophysical Journal, volume 453, page 83.

McNaron-Brown, K., Johnson, W. N., Jung, G. V., Kinzer, R. L., Kurfess, J. D., Strickman, M. S., Dermer, C. D., Grabelsky, D. A., Purcell, W. R., Ulmer, M. P., Kafatos, M., Becker, P. A., Staubert, R., & Maisack, M., "OSSE Observations of Blazars," 1995, Astrophysical Journal, volume 451, page 575.

Maisack, M., Becker, P. A., & Kafatos, M., "Multifrequency Emission from Hot Ion Disks," 1994, Astrophysical Journal Supplement, volume 92, page 533.

Becker, P. A., Kafatos, M., & Maisack, M., "Relativistic Particle Transport in Hot Accretion Disks," 1994, Astrophysical Journal Supplement, volume 90, page 949.

Nemiroff, R. J., Becker, P. A., & Wood, K. S., "Properties of Extremely Compact Neutron Stars," 1993, Astrophysical Journal, volume 406, page 590.

Becker, P. A., "First-Order Fermi Acceleration in Spherically Symmetric Flows: Solutions Including Quadratic Losses," 1992, Astrophysical Journal, volume 397, page 88.

Wood, K. S., Feldman, U., Becker, P. A., Nemiroff, R. J., & Kania, D. R., "A Fourier Transform Microscope for X-Ray Imaging," 1992, Review of Scientific Instruments, volume 63, page 5089.

Becker, P. A., & Begelman, M. C., "Dynamical Effects of Annihilation in Pair-Dominated Winds," 1990, Astrophysical Journal, volume 364, page 203.

Becker, P. A., "A Self-Consistent Theory of Photohydrodynamical Shocks," 1988, Astrophysical Journal, volume 327, page 772.

Becker, P. A., & Begelman, M. C., "Comptonization in Supercritical Winds. II. Dynamics and Observational Diagnostics," 1986, Astrophysical Journal, volume 310, page 552.

Becker, P. A., & Begelman, M. C., "Comptonization in Supercritical Winds. I. Spectral Evolution," 1986, Astrophysical Journal, volume 310, page 534.

**BOOK CHAPTERS:**

Becker, P. A., & Kazanas, D., "Cosmic-Ray Modified Shocks: Critical Behavior, Structure, and Stability," 2007, in *Frontiers in Cosmic Ray Research*, ed. Igor N. Martsch, Nova Publishers.

**CONFERENCE PRESENTATIONS AND INVITED TALKS:**

"A New Analytical Model for Bulk and Thermal Comptonization in Accretion-Powered X-Ray Pulsars," Astrophysics Science Division Colloquium Series, NASA Goddard Space Flight Center, October, 2007.

"A Closed-Form Model for Bulk and Thermal Comptonization in Accretion Powered X-Ray Pulsars," CSI Colloquium, George Mason University, March, 2007.

"A New Analytical Model for Bulk and Thermal Comptonization in Accretion Powered X-Ray Pulsars," presented at the 209th meeting of the American Astronomical Society, Seattle, Washington, January 2007.

"Bulk and Thermal Comptonization in Accretion Powered X-Ray Pulsars," presented at the 207th meeting of the American Astronomical Society, Washington, DC, January 2006.

"Spectral Formation in X-Ray Pulsar Accretion Columns," presented at the 203rd meeting of the American Astronomical Society, Atlanta, Georgia, January 2004.

"Inner Boundary Conditions for Advection-Dominated Accretion onto Black Holes," presented at the 199th meeting of the American Astronomical Society, Washington, DC, January 2002.

"Cosmic-Ray Modified Shocks: Structure and Stability," presented at the High-Energy Astrophysics Division meeting of the American Astronomical Society, November 2000.

"Cosmic-Ray Modified Shocks," NASA-ASEE Faculty Summer Fellowship Program Seminar, NASA Goddard Space Flight Center, June 2000.

"Black Holes: Fact or Fiction?," Cosmos Club, Washington, D.C., April 2000.

"Models for Transonic Accretion Flows onto Bright X-Ray Pulsars," Laboratory for High-Energy Astrophysics Colloquium, NASA Goddard Space Flight Center, June 1999.

"Dynamical Structure of Bright X-Ray Pulsar Accretion Columns," NASA-ASEE Faculty Summer Fellowship Program Seminar, NASA Goddard Space Flight Center, June 1999.

"Integrodifferential Equations of Radiative Transfer: Applications to Bright X-Ray Transients in Active Galaxies," Space Sciences Seminar, George Mason University, March 1999.

"Simple Models for X-Ray Pulsar Accretion Shocks," Washington Area Astronomers Meeting, University of Maryland, March 1996.

"A New Analytical Solution for the Structure of Radiation-Dominated Pulsar Accretion Shocks," presented at the 191st meeting of the American Astronomical Society, Washington, DC, January 1998.

"Dynamical and Radiative Properties of "Lossy" Radiation-Dominated Shocks," presented at the 187th meeting of the American Astronomical Society, San Antonio, Texas, January 1996.

"Self-Consistent Models for Radiation-Dominated Shocks with Sources," presented at the 185th meeting of the American Astronomical Society, Tucson, Arizona, January 1995.

"Continued-Fraction Solutions for the Variation of the Electron Temperature in Comptonizing Plasmas," presented at the 183rd meeting of the American Astronomical Society, Washington, DC, January 1994.

"Continued-Fraction Solutions to the Time-Dependent Kompaneets Equation in Exponentially-Cooling Atmospheres," presented at the 181st meeting of the American Astronomical Society, Phoenix, Arizona, January 1993.

"Stochastic Particle Acceleration in Hot Accretion Disks," Second Compton Gamma-Ray Symposium, University of Maryland, September 1993.

"Relativistic Particle Transport in Hot Accretion Disks," IAU Colloquium 142, Particle Acceleration Phenomena in Astrophysical Plasmas, University of Maryland, January 1993.

"First-Order Fermi Acceleration and the Origin of Core-Halo Radio Emission in Clusters of Galaxies," Joint Physics/CSI Colloquium, George Mason University, June 1992.

"Modeling the Nucleosynthesis of Gamma-Ray Emitters in Novae," Joint Physics/CSI Colloquium, George Mason University, February 1992.

"Beam-Induced Ionization in AGN," presented at the 179th meeting of the American Astronomical Society, Atlanta, Georgia, January 1992.

"IFSEC: A New Thermonuclear Burst Code for Modeling Novae and Related Hot, Dense Flows," presented at the 176th meeting of the American Astronomical Society, Albuquerque, New Mexico, June 1990.

"Time-Dependent Comptonization in Impulsively-Heated Plasmas," presented at the 175th meeting of the American Astronomical Society, Washington, DC, January 1990.

"Accretion-Driven Emission in SN1987A," presented at the 173rd meeting of the American Astronomical Society, Boston, Massachusetts, January 1989.

"Fermi Acceleration in Cooling Flows," presented at the 169th meeting of the American Astronomical Society, Pasadena, California, January 1987.

"Observational and Dynamical Properties of Pair Atmospheres," presented at the 167th meeting of the American Astronomical Society, Houston, Texas, January 1986.

"Radiative Transfer in Photohydrodynamical Shocks," presented at the 165th meeting of the American Astronomical Society, Tucson, Arizona, January 1985.

"Comptonization in a Trapped, Divergent Flow," presented at the 163rd meeting of the American Astronomical Society, Las Vegas, Nevada, January 1984.

**PUBLISHED ABSTRACTS AND CONFERENCE PROCEEDINGS:**

Subramanian, P., Becker, P. A., & Kafatos, M., "Hybrid Viscosity and the Magnetoviscous Instability in Hot, Collisionless Accretion Disks," in The First Kodai-Trieste Workshop on Plasma Astrophysics, Kodaikanal Observatory, India, August 2007, ed. Hasan et al. (New York: Springer).

Wolff, M. T., Becker, P. A., & Wolfram, K. D., "Comptonization and the Spectra of Accretion Powered X-Ray Pulsars," in The Multicoloured Landscape of Compact Objects and their Explosive Progenitors, Cefalu, Sicily, June 2006, ed. L. Burderi et al. (New York: AIP).

Becker, P. A., Wolff, M. T., & Wolfram, K. D., "A New Analytical Model for Bulk and Thermal Comptonization in Accretion Powered X-Ray Pulsars," AAS meeting #209, 2006, B.A.A.S.

Wolfram, K. D., Becker, P. A., & Wolff, M. T., "Numerical Simulations of Bulk and Thermal Comptonization in X-Ray Pulsar Accretion Columns," AAS meeting #209, 2006, B.A.A.S.

Becker, P. A., Wolff, M. T., & Wolfram, K. D., "Bulk and Thermal Comptonization in Accretion Powered X-Ray Pulsars," AAS meeting #207, 2005, B.A.A.S.

Wolff, M. T., & Becker, P. A., "Spectral Formation in X-Ray Pulsar Accretion Columns," 8th HEAD Meeting, September 2004, B.A.A.S.

Kazanas, D., Titarchuck, L., & Becker, P. A., "Broad Red-Shifted Lines as a Signature of Outflow," in X-Ray Timing 2003: Rossi and Beyond, ed. P. Kaaret, F. K. Lamb, & J. H. Swank (New York: AIP), p. 154.

Becker, P. A., & Wolff, M. T., "Spectral Formation in X-Ray Pulsar Accretion Columns," AAS Meeting #203, 2003, B.A.A.S.

Le, T., & Becker, P. A., "A Self-Consistent Model for Relativistic Outflows from Advection-Dominated Accretion Disks," AAS Meeting #203, 2003, B.A.A.S.

Becker, P. A., "Obituary: Leonid M. Ozernoy, 1939-2002," 2002, B.A.A.S., volume 34, page 1371.

Le, T., & Becker, P. A., "Advection-Dominated Accretion Flows with Outflow," AAS Meeting #199, 2001, B.A.A.S., 33, 1413.

Becker, P. A., & Le, T., "Inner Boundary Conditions for Advection-Dominated Accretion onto Black Holes," AAS Meeting #199, 2001, B.A.A.S., 33, 1474.

Subramanian, P., Becker, P. A., & Kazanas, D., "Relativistic Outflows from Advection-Dominated Accretion Disks Around Black Holes," B.A.S.I., 2001, 29, 369.

Becker, P. A., Le, T., & Kazanas, D., "Cosmic-Ray Modified Shocks: Structure and Stability," 5th HEAD Meeting, 2000, B.A.A.S., 32, 1653.

Subramanian, P., & Becker, P. A., "Relativistic Outflows from Advection-Dominated Accretion Disks around Black Holes," AAS Meeting #194, 1999, B.A.A.S., 31, 993.

Becker, P. A., "A New Analytical Solution for the Structure of Radiation-Dominated Pulsar Accretion Shocks," AAS Meeting # 191, 1998, B.A.A.S., 29, 1391.

Subramanian, P., Becker, P. A., & Kafatos, M., "Tangled Magnetic Fields in Hot Accretion Disks: Viscosity and Particle Acceleration," 1996, B.A.A.S., 28, 1388.

Kafatos, M., Ramos, E., Becker, P. A., Subramanian, P., & Yang, R., "Unified Models of AGN Accretion Disks and Blazars," 1996, ASP Conference Series, vol. 110, p. 384.

Becker, P. A., & Tan, J. A., "Dynamical and Radiative Properties of "Lossy" Radiation-Dominated Shocks," 1995, B.A.A.S., 27, 1435.

Subramanian, P., Becker, P. A., & Kafatos, M., "Ion Viscosity Mediated by Tangled Magnetic Fields in Accretion Flows onto Black Holes," 1995, B.A.A.S., 27, 1328.

Becker, P. A., & Kafatos, M., "Stochastic Particle Acceleration in Hot Accretion Disks," 1994, The Second Compton Symposium, ed. C. E. Fichtel, N. Gehrels, & J. P. Norris (New York: AIP), p. 620.

Shah, I., Becker P. A., & Kafatos, M., "Jet Formation in the Kerr Metric," 1994, The Second Compton Symposium, ed. C. E. Fichtel, N. Gehrels, & J. P. Norris (New York: AIP), p. 625.

Yang, R., Kafatos, M., & Becker P. A., "Transonic Flows in Fully Relativistic Disks," 1994, The Second Compton Symposium, ed. C. E. Fichtel, N. Gehrels, & J. P. Norris (New York: AIP), p. 395.

Becker, P. A., "Self-Consistent Models for Radiation-Dominated Shocks with Sources," 1994, B.A.A.S., 26, 1369.

Becker, P. A., "Continued-Fraction Solutions for the Variation of the Electron Temperature in Comptonizing Plasmas," 1993, B.A.A.S., 25, 1448.

Becker, P. A., "Continued-Fraction Solutions to the Time-Dependent Kompaneets Equation in Exponentially-Cooling Atmospheres," 1993, B.A.A.S., 25, 1247.

Subramanian, P., Becker, P. A., & Kafatos, M., "Electron-Acoustic Waves in Two-Temperature Accretion Disks," 1993, B.A.A.S., 25, 1420.

Ramos, E., Kafatos, M., Becker, P. A., et al., "UV and Multifrequency Observations of the Quasars 3C 273 and 3C 279," 1993, B.A.A.S., 25, 1383.

Yang, R., Kafatos, M., & Becker, P. A., "Isothermal Shocks in Fully Relativistic Accretion Disks," 1993, B.A.A.S., 25, 1420.

Beall, J. H., Guillory, J., & Becker, P. A., "The Role of Relativistic Jets in the Broad-Line Regions of AGN," 1992, B.A.A.S., 25, 740.

Wolff, M. T., Becker, P. A., & Wood, K. S., "Modeling the Nucleosynthesis of Gamma-Ray Emitters in Novae," 1991, B.A.A.S., 23, 1324.

Becker, P. A., Beall, J. H., & Guillory, J., "Beam-Induced Ionization in AGN," 1991, B.A.A.S., 23, 1430.

Becker, P. A., & Wood, K. S., "Time-Dependent Comptonization in Impulsively-Heated Plasmas," 1990, B.A.A.S., 22, 1194.

Wolff, M. T., Becker, P. A., & Wood, K. S., "Calculations of the Nucleosynthetic Yields of Gamma-Ray Emitters from Classical Novae: Preliminary Results," 1990, B.A.A.S., 22, 1212.

Becker, P. A., Wolff, M. T., Gardner, J. H., Giuliani, J. L., Wood, K. S., & Patnaik, G., "IFSEC: A New Thermonuclear Burst Code for Modeling Novae and Related Hot, Dense Flows," 1990, B.A.A.S., 22, 838.

Becker, P. A., & Chevalier, R. A., "Accretion-Driven Emission in SN1987A," 1988, B.A.A.S., 20, 961.

Becker, P. A., & Balbus, S. A., "Fermi Acceleration in Cooling Flows," 1987, B.A.A.S., 19, 1080.

Becker, P. A., "Observational and Dynamical Properties of Pair Atmospheres," 1986, B.A.A.S., 18, 908.

Becker, P. A., & Begelman, M. C., "Radiative Transfer in Photohydrodynamical Shocks," 1985, B.A.A.S., 17, 832.

Becker, P. A., & Begelman, M. C., "Comptonization in a Trapped, Divergent Flow" 1984, B.A.A.S., 16, 899