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Department of Physics
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Physics Faculty
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Dr. James
Horwitz
Professor of Physics
Chairman of Physics
Ph. D., University of California at San Diego
Research Interests:
Space plasma physics, particularly of the
terrestrial magnetosphere and ionosphere.
Research Group:
Space Physics
Email:
horwitz@uta.edu
Location: Room 108 SH, Room 332 CPB
Phone: 817-272-0991
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Background
Professor of Physics and Chair, Department of Physics,
The University of Texas at Arlington, Arlington, Texas
76019.
Dr. Horwitz obtained the B. A. in Physics (Highest
Honors) from the University of California in San Diego
in 1970, and M. S. (1972) and Ph. D. (1976) degrees from
the same institution. His Ph. D. dissertation title was
``Radar Measurements of Electric Fields in the High
Latitude Ionosphere and Other Topics in Auroral
Physics.'' Dr. Horwitz subsequently joined NASA Marshall
Space Flight Center as an NAS/NRC Research
Associate/Post-Doctoral Fellow, and two years later,
became a Physics faculty member at The University of
Alabama in Huntsville. He maintained an active research
program there centered on the analysis of data on and
modeling of ionospheric plasma transport into the
magnetosphere. In addition to his duties in Physics, he
served from 1986 to 2004 as Associate Director of the
Center for Space Plasma and Aeronomic Research (CSPAR)
at UAH. He was also the director of the Space Plasma
Interactive Data Analysis and Simulation Laboratory (SPIDASL)
computer facility within UAH/CSPAR.
Since becoming Chair of the Physics Department at The
University of Texas at Arlington in November 2004, he
has played major roles in such critical initiatives as
the hiring of the new Planetarium Director and bringing
the new Planetarium activities at UT Arlington into
existence. He has established new departmental thrusts
in space physics and nano-bio physics, has succeeded in
the doubling of the numbers of graduate research
assistantships in Physics, secured funding for the
Computational Physics Cluster for simulation research,
and oversaw the move of much of the department to the
new 128,000 sq. ft. Chemistry and Physics building
during early 2006.
Dr. Horwitz performs computer simulation and data
analysis research in space physics, with a principal
focus on auroral and polar ionospheric plasma
generation, energization and transport into the
terrestrial magnetosphere. Among his accomplishments are
the development of the first steady-state and dynamic
codes to join fluid-like treatment for
collision-dominated plasma regions to kinetic treatment
of non-collision-dominated plasma regions, with
potential applications in multiple areas of scientific
application. He is also currently a co-Investigator on
the Thermal Ion Dynamics Experiment (TIDE) on NASA’s
POLAR spacecraft.
He has graduated 9 Ph. D.’s and 11 M.S. degree students.
He has authored or co-authored over 140 refereed
publications, has presented numerous invited talks, and
has been awarded several million dollars of funding from
NASA and NSF. He has been Associate Editor of
Geophysical Research Letters, Space Physics and Aeronomy
Section Editor for EOS, Space Physics Editor for Reviews
of Geophysics, and Space Physics Representative for
American Geophysical Union Book Board.
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Selected Publications
Horwitz, J. L., C. W. Ho, H. D. Scarbro, G. R. Wilson,
and T. E. Moore, Centrifugal acceleration of the polar
wind, J. Geophys. Res., 99, 15051, 1994.
Horwitz, J. L., N. Singh, and J. L. Burch, editors,
Cross-Scale Coupling in Space Plasmas, American
Geophysical Union Monograph 93, Washington, D. C., 1995.
Horwitz, J. L., D. L. Gallagher, and W. K. Peterson,
Editors, Geospace Mass and Energy Flow: Results from the
ISTP Program, American Geophysical Union Monograph 104,
Washington, D. C., 1998.
Horwitz, J. L., and S. Zalesak, Computer simulation of
multiple scale processes in space plasmas, (1993-5
progress), Reviews of Radio Sci., p. 677, 1996.
Horwitz, J. L., and T. E. Moore, Four contemporary
issues concerning ionospheric plasma flow to the
magnetosphere, Space Sci. Rev., Vol. 80, 46, 1997.
Su, Y.-J, J. L. Horwitz, G. R. Wilson, P. G. Richards,
D. G. Brown, and C. W. Ho, Self-consistent simulation of
the photo-electron-driven polar wind from 120 km to 9 Re
altitude, J. Geophys. Res., 103, 2279, 1998.
Wu, X.-Y., J. L. Horwitz, G. M. Estep, P. G. Richards,
G. R. Wilson, and D. G. Brown, Dynamic Fluid-Kinetic(DyFK)
modeling of the auroral plasma outflows driven by soft
electron precipitation and transverse heating, J.
Geophys. Res., 105, 17263, 1999.
Zeng, W., J. L. Horwitz, B. A. Stevenson, X.-Y. Wu,
Y.-J. Su, P. D. Craven, F. J. Rich, T. E. Moore and J.
Tu, Near-simultaneous POLAR and DMSP measurements of
topside ionospheric field-aligned flows at high
latitudes, J. Geophys. Res, 106, A12, 29,601, 2001.
Wu, X.-Y., J. L. Horwitz, and J. Tu, Dynamic Fluid
Kinetic(DyFK) simulation of auroral ion transport:
Synergistic effects of parallel potentials, transverse
ion heating, and soft electron precipitation, J. Geophys.
Res., 107, A10, 1283, doi:10.1029/2000JJA000190, 2002.
Tu, J. -N., J. L. Horwitz, P. Song, X. -Q. Huang, B. W.
Reinisch, and P. G. Richards, Simulating plasmaspheric
field-aligned density profiles measured with IMAGE/RPI:
Effects of plasmasphere refilling and ion heating, J.
Geophys. Res., Vol. 108, No. A1, 10.1029/2002JA009468,
2003.
Horwitz, J. L, D. L. Gallagher, J. Perez, R. Lieu, J. A.
Miller, and R. Preece, Astrophysical Acceleration in
Geospace and Beyond, EOS Trans, Vol. 84, No. 11, March
18, 2003.
Tu J.-N., J. L. Horwitz, P. A. Nsumei, P. Song, X.-Q.
Huang, B. W. Reinisch, Simulation of polar cap
field-aligned electron density profiles measured with
the IMAGE radio plasma imager, J. Geophys. Res., 109,
A07206, doi:10.1029/2003JA010310, 2004.
Zeng, W., J. L. Horwitz, P. D. Craven, F. J. Rich, and
T. E. Moore, The O+ density trough at 5000 km altitude
in the polar cap, J.Geophys. Res., Vol. 109, no. A3, DoI:
10.10.29/2003 JA010210, 2004.
Tu, J. -N., J. L. Horwitz, and T. E. Moore, Simulating
the cleft ion fountain at Polar perigee altitudes, J.
Atmos. Space Terr. Phys., 67, 265, 2005.
Fraser, B. J., J. L. Horwitz, J. A. Slavin, Z. C. Dent,
and I. R. Mann, Heavy ion mass loading of the
geomagnetic field near the plasmapause and ULF wave
implications, Geophys. Res. Lett., 32, L04102,
doi:10.1029/2004GL021315, 2005.
Zeng, W., J. L. Horwitz, and J.-N. Tu, Characteristic
ion distributions in the dynamic auroral transition
region, J. Geophys. Res., 111, A04201,
doi:10.1029/2005JA011417, 2006.
Gallagher, D. L., J. L. Horwitz, J. D. Perez, R. D.
Preece, and J. J. Quenby, Preface to Particle
Acceleration in Astrophysical Plasmas: Geospace and
Beyond, in Particle Acceleration in Astrophysical
Plasmas: Geospace and Beyond, American Geophysical Union
monograph, edited by D. L. Gallagher, J. L. Horwitz, J.
D. Perez, R. D. Preece, and J. J. Quenby, Washington, D.
C., 2005.
Gallagher, D. L., J. L. Horwitz, J. D. Perez, R. D.
Preece, and J. J. Quenby, Introduction to Particle
Acceleration in the Cosmos, in Particle Acceleration in
Astrophysical Plasmas: Geospace and Beyond, American
Geophysical Union monograph, edited by D. L. Gallagher,
J. L. Horwitz, J. D. Perez, R. D. Preece, and J. J.
Quenby, Washington, D. C., 2005.
Gallagher, D. L, J. L. Horwitz, J. Quenby, R. D. Preece,
and J. Perez, Editors, Particle Acceleration in
Astrophysical Plasmas: Geospace and Beyond, American
Geophysical Union monograph, Washington, D. C., 2005.
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