Dr. Tod Eric Strohmayer

DATE OF BIRTH:

1963, January 1

PRESENT POSITION:

Astrophysicist, X-ray Astrophysics Branch, Laboratory for High Energy Astrophysics in NASA's GSFC.

Rossi X-ray Timing Explorer (RXTE) Proportional Counter Array (PCA) Instrument/Science Team, RXTE Deputy Project Scientist. Support for Constellation-X Facility Science Team (FST).

RESEARCH AREAS:

X-ray Binaries; Neutron Stars; Black Holes; Compact White Dwarf Binaries; Soft Gamma Repeaters; Gamma-Ray Bursts

EDUCATION:

1992 - PhD (physics), "On Observing Neutron Star Oscillations", University of Rochester (NY), Rochester, NY

1988 - MA physics, University of Rochester (NY), Rochester, NY

1985 - BS Physics, Rensselaer Polytechnic Institute, Troy, NY

PREVIOUS POSITIONS:

1994--1998, USRA Research scientist in LHEA/NASA/GSFC

1992--1994, Postdoctoral Fellow, NIS-2 Division Los Alamos National Laboratory

1990--1992, NASA graduate student fellow, University of Rochester, theoretical astrophysics

PROFESSIONAL SOCIETY MEMBERSHIPS:

Full Member, American Astronomical Society (High Energy Astrophysics Division member)

Full Member, American Physical Society

AWARDS AND HONORS:

2006 Bruno Rossi Prize in High Energy Astrophysics, American Astronomical Society

For X-ray studies that revealed the millisecond spin periods of accreting neutron stars.

2006 NASA Exceptional Scientific Achievement Medal

For development of probes of fundamental physics using X-ray studies of compact stars.

2005 NASA/GSFC Space Science Achievement Award

Awarded for X-ray studies to probe the structure of matter at extreme densities.

2002 NASA Exceptional Achievement Medal

Awarded for X-ray Timing studies of Black Holes.

2001 NASA/GSFC Honor Award

Awarded for the discovery of 450 Hz QPO in black hole transient and microquasar GRO J1655-40, and its implications for black hole spin.

2000 NASA/GSFC John C. Lindsay Memorial Award

Awarded for the discovery of the spin periods of bursting neutron stars and new methods to study the masses and radii of neutron stars.

1997 USRA High Energy Astrophysics Program Excellence in Research Award

Awarded for recent studies of X-ray bursts with RXTE

1992 May 01 Astronomical Society of New York 'Graduate Student Prize'

Awarded for the paper, "Light Curves of Rotating, Oscillating Neutron Stars," published in ApJ, 1992, 388, 138.

PUBLICATIONS IN REFEREED JOURNALS:

Discovery of 442 Hz Pulsations from an X-Ray Source in the Globular Cluster NGC 6440

F. P. Gavriil, T. E. Strohmayer, J. H. Swank & C. B. Markwardt, 2007, ApJ, 669, L29

Thermonuclear Flame Spreading on Rapidly Spinning Neutron Stars: Indications of the Coriolis Force?

S. Bhattacharyya & T. E. Strohmayer, 2007, ApJ, 666, L85

Evidence of a Broad Relativistic Iron Line from the Neutron Star Low-Mass X-Ray Binary Serpens X-1

S. Bhattacharyya & T. E. Strohmayer, 2007, ApJ, 664, L103

Quasi-periodic Variability in NGC 5408 X-1

T. E. Strohmayer, R. F. Mushotzky, L. Winter, R. Soria, P. Uttley, & M. Cropper, 2007, ApJ, 660, 580

The 2004 Hyperflare from SGR 1806-20: Further Evidence for Global Torsional Vibrations

T. E. Strohmayer, & A. L. Watts, 2006, ApJ, 653, 593

An Unusual Precursor Burst with Oscillations from SAX J1808.4-3658

S. Bhattacharyya & T. E. Strohmayer, 2007, ApJ, 656, 414

Detection of the irradiated donor in the LMXBs 4U 1636-536 (=V801 Ara) and 4U 1735-444 (=V926 Sco)

J. Casares, R. Cornelisse, D. Steeghs, P. A. Charles, R. I. Hynes, K. O'Brien & T. E. Strohmayer, 2006, MNRAS, 373, 1235

The energy dependence of burst oscillations from the accreting millisecond pulsar XTE J1814-338

A. L. Watts & T. E. Strohmayer, 2006, MNRAS, 373, 769

The 2004 Hyperflare from SGR 1806-20: Further Evidence for Global Torsional Vibrations

T. E. Strohmayer & A. L. Watts, 2006, ApJ, 653, 593

RXTE Observations of 1A 1744-361: Correlated Spectral and Timing Behavior

S. Bhattacharyya, T. E. Strohmayer, J. H. Swank & C. B. Markwardt, 2006, ApJ, 652, 603

Spreading of Thermonuclear Flames on the Neutron Star in SAX J1808.4-3658: An Observational Tool

S. Bhattacharyya & T. E. Strohmayer, 2006, ApJ, 642, L161

Calibration of the Rossi X-Ray Timing Explorer Proportional Counter Array

K. Jahoda, C. B. Markwardt, Y. Radeva, A. H. Rots, M. J. Stark, J. H. Swank, T. E. Strohmayer & W. Zhang, 2006, ApJS, 163, 401

Signature of Temporary Burning Front Stalling from a Non-Photospheric Radius Expansion Double-peaked Burst

S. Bhattacharyya & T. E. Strohmayer, 2006, ApJ, 641, L53

The Discovery of a Neutron Star with a Spin Frequency of 530 Hz in A1744-361

S. Bhattacharyya, T. E. Strohmayer, C. B. Markwardt, & J. H. Swank, 2005, ApJ, 636, L121

Detection with RHESSI of High-Frequency X-Ray Oscillations in the Tail of the 2004 Hyperflare from SGR 1806-20

A. L. Watts & T. E. Strohmayer, 2006, ApJ, 637, L117

A Non-PRE Double-peaked Burst from 4U 1636-536: Evidence of Burning Front Propagation

S. Bhattacharyya & T. E. Strohmayer, 2006, ApJ, 636, L121

Evidence for Harmonic Content and Frequency Evolution of Oscillations during the Rising Phase of X-Ray Bursts from 4U 1636-536

S. Bhattacharyya & T. E. Strohmayer, 2005, ApJ, 634, L157

Analysis of Variability in the Burst Oscillations of the Accreting Millisecond Pulsar XTE J1814-338

A. L. Watts & T. E. Strohmayer, 2005, ApJ, 634, 547

Discovery of Fast X-Ray Oscillations during the 1998 Giant Flare from SGR 1900+14

T. E. Strohmayer & A. L. Watts, 2005, ApJ, 632, L111

Precision X-Ray Timing of RX J0806.3+1527 with CHANDRA: Evidence for Gravitational Radiation from an Ultracompact Binary

T. E. Strohmayer, 2005, ApJ, 627, 920

Light Curves of Oscillating Neutron Stars

U. Lee & T. E. Strohmayer, 2005, MNRAS, 361, 659

Discovery of the Accretion-powered Millisecond X-Ray Pulsar IGR J00291+5934

D. K. Galloway, C. B. Markwardt, E. H. Morgan, D. Chakrabarty & T. E. Strohmayer, 2005, ApJ, 622, L45

Constraints on Neutron Star Parameters from Burst Oscillation Light Curves of the Accreting Millisecond Pulsar XTE J1814-338

S. Bhattacharyya, T. E. Strohmayer, M. C. Miller, & C. B. Markwardt, 2005, ApJ, 619, 483

Discovery of the Neutron Star Spin Frequency in EXO 0748-676

A. R. Villarreal, & T. E. Strohmayer, 2004, ApJ, 614, L121

Chandra Detection of the AM Canum Venaticorum Binary ES Ceti (KUV 01584-0939)

T. E. Strohmayer, 2004, ApJ, 614, 358

Chandra Observations of V407 Vulpeculae: Confirmation of the Spin-up

T. E. Strohmayer, 2004, ApJ, 610, 416

Detection of Nitrogen and Neon in the X-Ray Spectrum of GP Comae Berenices with XMM/Newton

T. E. Strohmayer, 2004, ApJ, 608, L53

The Evolution of the Accretion Disk around 4U 1820-30 during a Superburst

D. R. Ballantyne & T. E. Strohmayer, 2004, ApJ, 602, L105

A peculiar type-I X-ray burst from GRS 1747-312

J. J. M. in 't Zand, T. E. Strohmayer, C. B. Markwardt, & J. H. Swank, 2003, A&A, 409, 659

X-ray Bursts from the Accreting Millisecond Pulsar XTE J1814-338

T. E. Strohmayer, C. B. Markwardt, J. H. Swank, & J. J. M. in 't Zand 2003, ApJ, 596, L67

Phase Coherent Timing of RX J0806.3+1527 with ROSAT and Chandra

T. E. Strohmayer 2003, ApJ, 593, L39

Bursts, eclipses, dips and a refined position for the luminous low-mass X-ray binary in the globular cluster Terzan 6

J. J. M. in 't Zand, F. Hulleman, C. B. Markwardt, M. Mendez, E. Kuulkers, R. Cornelisse, J. Heise, T. E. Strohmayer & F. Verbunt 2003, A&A, 406, 233

Discovery of X-Ray Quasi-periodic Oscillations from an Ultraluminous X-Ray Source in M82: Evidence against Beaming

T. E. Strohmayer & R. F. Mushotzky 2003, ApJ, 586, L61

Evidence for Orbital Decay of RX J1914.4+2456: Gravitational Radiation and the Nature of the X-ray Emission

T. E. Strohmayer 2002, ApJ, 581, 577

Evidence for a Millisecond Pulsar in 4U 1636-53 During a Superburst

T. E. Strohmayer & C. B. Markwardt, 2002, ApJ, 577, 337

Discovery of a Second Accreting Millisecond Pulsar: XTE J1751-305

C. B. Markwardt, J. H. Swank, T. E. Strohmayer, J. J. M. in 't Zand, F. E. Marshall, 2002, ApJ, 575, L21

Burst Oscillation Periods from 4U 1636-53: A Constraint on the Binary Doppler Modulation

A. B. Giles, K. M. Hill, T. E. Strohmayer, and N. Cummings 2002, ApJ, 568, 279

A Remarkable Three Hour Thermonuclear Burst from 4U 1820-30

T. E. Strohmayer, and E. F. Brown 2002, ApJ, 566, 1045

Gravitational Waves from Rotating Neutron Stars and Evaluation of Fast Chirp Transform Techniques

T. E. Strohmayer 2002, Class. and Quantum Grav., 19, 1321

The Burst Behavior of the Eclipsing Low-Mass X-Ray Binary MXB 1659-298

R. Wijnands, M. P. Muno, J. M. Miller, L. M. Franco, T. E. Strohmayer, D. K. Galloway, and D. Chakrabarty 2002, ApJ, 566, 1060

Bounds on Compactness for LMXB Neutron Stars from X-Ray Burst Oscillations

N. R. Nath, T. E. Strohmayer, and J. H. Swank 2002, ApJ, 564, 353

An Unusual Burst from Soft Gamma Repeater SGR 1900+14: Comparisons with Giant Flares and Implications for the Magnetar Model

A. I. Ibrahim, T. E. Strohmayer, P. M. Woods, C. Kouveliotou, C. Thompson, R. C. Duncan, S. Dieters, J. H. Swank, J. van Paradijs, and M. Finger 2001, ApJ, 558, 237

Discovery of a 450 HZ Quasi-periodic Oscillation from the Microquasar GRO J1655-40 with the Rossi X-Ray Timing Explorer

T. E. Strohmayer 2001, ApJ, 552, L49

Discovery of a Second High-Frequency Quasi-periodic Oscillation from the Microquasar GRS 1915+105

T. E. Strohmayer 2001, ApJ, 554, L169

The Steady Spin-down Rate of 4U 1907+09

A. Baykal, C. Inam, M. A. Alpar, J. J. M. in 't Zand and T. E. Strohmayer 2001, MNRAS, 327, 1269

Oscillations During Thermonuclear X-ray Bursts

T. E. Strohmayer 2001, Adv. Space Res., Vol 28, Nos 2-3, pp. 511

Discovery of Nearly Coherent Oscillations with a Frequency of ~567 Hz during Type-I X-ray Bursts of the X-ray Transient and Eclipsing Binary X 1658--298

R. Wijnands, T. E. Strohmayer and L. M. Franco 2001, ApJ, 549, L71

Differences Between the Two Anomalous X-ray Pulsars: Variations in the Spin-down Rate of 1E1048.1-5937 and an Extended Interval of Quiet Spin-down in 1E2259+586

A. Baykal, T. E. Strohmayer, J. H. Swank, M. A. Alpar, and M. J. Stark 2000, MNRAS, 319, 205

Discovery of a 6.4 keV Emission Line in a Burst from SGR 1900+14

T. E. Strohmayer and A. I. Ibrahim 2000, ApJ Letters, 537, L111

Post-glitch RXTE-PCA observations of the Vela pulsar

M. A. Gurkan, A. Baykal, M. A. Alpar,  H. B. Ogelman, T. E. Strohmayer 2000, A&A, 356, 1136

The Orbital Period of the Recurrent X-ray Transient in Terzan 6

J.J.M. in't Zand, A. Bazzano, M. Cocchi, R. Cornelisse, J. Heise, L. Kuiper,E. Kuulkers, C. B. Markwardt, J. M. Muller, L.  Natalucci, M. J. S. Smith, T. E. Strohmayer, P. Ubertini, F. Verbunt 2000, A&A, 355, 145

ASCA observation of the Quiescent X-ray Counterpart to SGR 1627-41

K. Hurley, T. E. Strohmayer, P. Li, C. Kouveliotou, P. Woods, J. van Paradijs, T. Murakami, D. Hartmann, I. Smith, M. Ando, A. Yoshida, and M. Sugizaki 2000, ApJ, 528, L21

Variable Spin-Down in the Soft Gamma Repeater SGR 1900+14 and Correlations with Burst Activity

P. M. Woods, C. Kouveliotou, J. van Paradijs, M. H. Finger, C. Thompson, R. Duncan, K. Hurley, T. E. Strohmayer, J. H. Swank, and T. Murakami 1999, ApJ, 524, L55

Spin Down of Pulsations in the Cooling Tail of an X-ray Burst from 4U 1636-53

T. E. Strohmayer

1999, ApJ, 523, L51

On the Frequency Evolution of X-ray Brightness Oscillations During Thermonuclear X-ray Bursts: Evidence of Coherent Oscillations

T. E. Strohmayer, and C. B. Markwardt

1999, ApJ, 516, L81

A New X-ray Outburst in the Globular Cluster NGC 6440: SAX J1748.9-2021

J. J. M. In 't Zand, F. Verbunt, T. E. Strohmayer, Bazzano, A. Cocchi, M., Heise, J., Van Kerkwijk, M. H., Muller, J. M., Natalucci, L., Smith, M. J. S. & Ubertini, P.

1999, A&A, 345, 100

Observation of Kilohertz Quasi-periodic Oscillations from the Atoll Source 4U 1702-429 by the Rossi X-ray Timing Explorer

C. B. Markwardt, T. E. Strohmayer, and J. H. Swank

1999, ApJ, 512, L125

Discovery of a Magnetar Associated with the Soft Gamma Repeater SGR 1900+14

C. Kouveliotou, T. E. Strohmayer, K. Hurley, J. van Paradijs, M. H. Finger, S. Dieters, P. Woods, C. Thompson, and R. C. Duncan

1999, ApJ, 510, L115

ASCA Discovery of an X-ray Pulsar in the Error Box of SGR 1900+14

K. Hurley, P. Li, C. Kouveliotou, T. Murakami, M. Ando, T. E. Strohmayer, J. van Paradijs, F. Vrba, C. Luginbuhl, A. Yoshida, and I. Smith

1999, ApJ, 510, L111

An X-ray Pulsar with a Superstrong Magnetic Field in the Soft Gamma-ray Repeater SGR1806-20

C. Kouveliotou, S. Dieters, T. E. Strohmayer, J. van Paradijs, G. J. Fishman, C. A. Meegan, K. Hurley, J. Kommers, I. Smith, D. Frail, & T. Murakami

1998, Nature, 393, 235

The Long-term Stability of Oscillations During Thermonuclear X-ray Bursts: Constraining the Binary X-ray Mass Function

T. E. Strohmayer, W. Zhang, J. H. Swank, & I. Lapidus

1998, ApJ, 503, L147

On the Amplitude of Burst Oscillations in 4U 1636-54: Evidence for Nuclear Powered Pulsars

T. E. Strohmayer, W. Zhang, J. H. Swank, N. E. White, & I. Lapidus

1998, ApJ, 498, L135

Spin-down rate of 1E 2259+586 from RXTE Observations

A. Baykal, J. H. Swank, T. E. Strohmayer, and M. J. Stark

1998, A&A, 336, 173

Correlation Between Energy Spectral States and Fast Time Variability and Further Evidence for the Marginally Stable Orbit in 4U 1820-30

W. Zhang, A. P. Smale, T. E. Strohmayer, & J. H. Swank

1998, ApJ, 500, L171

Discovery of Two Simultaneous Kilohertz Quasi-periodic Oscillations in the Persistent Flux of GX 349+2

W. Zhang, T. E. Strohmayer, & J. H. Swank

1998, ApJ, 500, L167

X-ray Spectral Characteristics of GINGA Gamma-ray Bursts

T. E. Strohmayer, E. E. Fenimore, T. Murakami, & A. Yoshida

1998, ApJ, 500, 873

Discovery of the 198 s X-ray Pulsar GRO J2058+42

C. A. Wilson, M. H. Finger, B. A. Harmon, D. Chakrabarty, & T. E. Strohmayer

1998, ApJ, 499, 820

Millisecond Oscillations in the Persistent and Bursting Flux of Aquila X-1 During an Outburst

W. Zhang, K. Jahoda, R. L. Kelley, T. E. Strohmayer, J. H. Swank & S. N Zhang

1998, ApJ, 495, L9

Recent X-ray Measurements of the Accretion Powered X-ray Pulsar 4U 1907+09

in 't Zand, J. J. M., Baykal, A., and Strohmayer, T. E.

1998, ApJ, 496, 386

363 Hz Oscillations During the Rising Phases of Bursts from 4U 1728-34: Evidence for Rotational Modulation

Strohmayer, T. E., Zhang, W. and Swank, J. H.

1997, ApJ, 487, L77

Millisecond Pulsations from a Low Mass X-ray Binary in the Galactic Center Region

Strohmayer, T. E., Jahoda, K., Giles, A. B, and Lee, U

1997, ApJ, 486, 355

Neutron Star Masses and Radii as Inferred from Kilo-hertz QPOs

Zhang, W., Strohmayer, T. E., and Swank, J. H.

1997, ApJ, 482, L167

Dipping Activity in the X-ray Pulsar 4U 1907+09

in 't Zand, J. J. M., Strohmayer, T. E., and Baykal, A.

1997, ApJ, 479, L47

Millisecond X-ray Variability from an Accreting Neutron Star System

Strohmayer, T. E., Zhang, W., Swank, J. H., Smale, A., Titarchuk, L., Day, C., and Lee, U.

1996, ApJ, 469, L9.

Quasi-periodic X-ray Brightness Oscillations of GRO J1744-28

Zhang, W., Morgan, E. H., Jahoda, K., Swank, J. H., Strohmayer, T. E., Jernigan, G., and R. I. Klein

1996, ApJ, 469, L29.

The Main Characteristics of GRO J1744-28 Observed By the PCA Experiment on RXTE

Giles, A. B., Swank, J. H., Jahoda, K., Zhang, W., Strohmayer, T. E., Stark, M. J. & Morgan, E. H.

1996, ApJ, 469, L25.

Pulse Arrival Time Gltiches in GRO J1744-28

Stark, M. J., Baykal, A., Strohmayer, T. E., & Swank, J. H.

1996, ApJ, 470, L109.

Stability of r- and g-Modes In Neutron Stars: Steady-State Thermonuclear Excitation

Strohmayer, T. E., and Lee, U.

1996, ApJ, 467, 001

Nonradial Oscillations of Rotating Neutron Stars: The Effects of the Coriolis Force

Lee, U., and Strohmayer, T. E.

1996, A&A, 311, 155

Discovery of 800 Hz QPO in 4U 1608-52

Berger, M., van der Klis, M., van Paradijs, J., Lewin, W. H. G., Lamb, F. K., Vaughan, B., Kuulkers, E., Augusteijn, T., Zhang, W., Marshall, F. E., Swank, J. H., Lapidus, I., Lochner, J. C., & Strohmayer, T. E.

1996, ApJ, 469, L13.

An Unusual High Energy Transient

Strohmayer, T. E., Fenimore, E. E., Murakami, T. and Yoshida, A.

1995, ApJ, 445, 731

Constraints on the Fraction of Repeating GRB Sources from BATSE Measurements

Strohmayer, T. E., Fenimore, E. E., Miralles, J. A.

1994, ApJ, 432, 665

The Intrinsic Luminosity of Gamma-Ray Bursts and Their Host Galaxies

E. E. Fenimore, R. I. Epstein, C. Ho, R. W. Klebesadel, C. Lacey, J. G. Laros, M. Meier, T. E. Strohmayer, G. Pendleton, G. Fishman, C. Kouveliotou, C. Meegan

1993, Nature, 366, 40

Density Discontinuities and the g-mode Oscillation Spectra of Neutron Stars

Strohmayer, T. E.

1993, ApJ, 417, 273

Light Curves of Rotating, Oscillating Neutron Stars

Strohmayer, T. E.

1992, ApJ, 388, 138

Determining the Coherence of Micropulses

T. E. Strohmayer, J. M. Cordes, and H. M. Van Horn

1992, ApJ, 389, 685

Inertial Mode Oscillations of Jupiter

U. Lee, T. E. Strohmayer, and H. M. Van Horn

1992, ApJ, 397, 674

The Shear Modulus of the Neutron Star Crust and Non-radial Oscillations of Neutron Stars

T. E. Strohmayer, S. Ogata, H. Iyetomi, S. Ichimaru, and H. M. Van Horn

1991, ApJ, 375, 679

Oscillations of Rotating Neutron Stars

T. E. Strohmayer

1991, ApJ, 372, 573

Technical Rep: Eunice Eng, eunice.eng@gsfc.nasa.gov , (301)-286-6043
Questions/Comments/Feedback to: webmaster@lheawww.gsfc.nasa.gov

This file was last modified Monday, 20-Sep-1999 09:11:33 EST.