J. D. (Joe) Perez

Theoretical Space Plasma Physics

Email: perez@physics.auburn.edu

Office: Allison Labs #213
Phone: 334-844-4227

 B.S.(Honors), Physics, 1964, Loyola University of the South, New Orleans, LA
 Ph.D., 1968, University of Maryland, College Park, MD

 1968 - 1969 Postdoctoral Fellow, Center for Theoretical Physics, University of Maryland.
 1969 - 1971 Postdoctoral Fellow, Institute for Pure and Applied Physical Sciences, University of California, San Diego.
 1971 - 1974 Assistant Professor, University of Southern California.
 1983 - 1988 Manager and Staff Scientist, Applied Physics Laboratory, Lockheed Palo Alto Research Laboratory
 1988 - 2012    Professor and Head, Physics Department, Auburn University.
 2012 -   Professor, Physics Department, Auburn Universtiy

Schematic of Earth's Magnetosphere


















We are working with the Science Team for the TWINS satellite NASA mission of opportunity. The two spacecraft are in Molniya orbits with perigee altitudes of ~1000 km and apogees in the northern hemisphere at ~7.2 RE.  The spacecraft are 3-axis stabilized and provide approximately nadir pointing of the TWINS instruments. The instruments image energetic neutral atoms coming from the Earth's inner magnetosphere.  The neutrals are created by charge exchange between energetic ions and cold neutral hydrogen.  It is the ions that are of interest.  The Auburn group specializes in extracting information about the ions trapped in the Earth's ring current from the neutral atom images.  This technique is giving scientists the opportunity to see the invisible.

We are also working with other AU scientists and collaborators at the Goddard Space Flight Center in Greenbelt, MD to develop simulation codes to study the injection of ions into the Earth's ring current from the Earth's magnetotail. The code will be the first 3D hybrid code combined with a comprehensive ring current model and will allow scientists to understand the dynamic behavior observed by satellites in the Earth's magnetosphere.

Perez, J. D., E. W. Grimes, Jerry Goldstein, David J. McComas, Philip Valek, and N. Billor (2012), Evolution of CIR Storm on 22 July 2009, J. Geophys. Res., in press.

Tan, B., Y. Lin, J. D. Perez, and X. Y. Wang (2011), Global-Scale Hybrid Simulation of Cusp Precipitating Ions Associated With Magnetopause Reconnection Under Southward IMF, J. Geophys. Res., , 117, A03217, doi:10.1029/2011JA016871.

Tan,B., Y. Lin, J. D. Perez and X. Y. Wang, (2011)  Global-Scale Hybrid Simulation of Dayside Magnetic Reconnection Under Southward IMF: Structure and Evolution of Reconnection, J. Geophys. Res., 116, A02206, doi:10.1029/2010JA015580.

Valek, P., P. C. Brandt, N. Buzulukova, M.-C. Fok, J. Goldstein, D. J. McComas, J. D. Perez, E. Roelof, and R. Skoug (2010), Evolution of low-altitude and ring current ENA emissions from a moderate magnetospheric storm: Continuous and simultaneous TWINS observations, J. Geophys. Res., 115, A11209, doi:10.1029/2010JA015429.

Grimes, E. W., J. D. Perez, J. Goldstein, D. J. McComas, and P. Valek (2010), Global observations of ring current dynamics during corotating interaction region–driven geomagnetic storms in 2008, J. Geophys. Res., 115, A11207, doi:10.1029/2010JA015409.

Valek, P. and P. C. Brandt and N. Buzulukova and M.-C. Fok and J. Goldstein and D. J. McComas and J. D. Perez and E. Roelof and R. Skoug (2010), Evolution of low altitude and ring current ENA emissions from a moderate magnetospheric storm: Continuous and simultaneous TWINS observations, J. Geophys. Res., doi:10.1029/2010JA015429, in press.

Last updated: 09/17/2012