J. D. (Joe) Perez
Physics
Professor

Research Areas: Theoretical Space Plasma Physics

Office: Leach Science Center 2130

Address:
380 Duncan Drive
Auburn, AL 36849

Phone: (334) 844-4227
E-Mail: perez@physics.auburn.edu

Education

Professional Employment

Honors and Awards

Professional Activities

Member: American Physical Society American, Association for the Advancement of Science, American Geophysical Union

Research and Teaching Interests

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. 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. Recent Publications 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 200

Selected Publications

1. 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.
2. 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.
3. 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.
4. 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.
5. 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.