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withers

HR: 1340h
AN: SA53B-1165
TI: Observations of the Effects of Solar Flares on Earth and Mars
AU: * Withers, P
EM: withers@bu.edu
AF: Boston University, Center for Space Physics 725 Commonwealth Avenue, Boston, MA 02215 United States
AU: Mendillo, M
EM: withers@bu.edu
AF: Boston University, Center for Space Physics 725 Commonwealth Avenue, Boston, MA 02215 United States
AU: Wroten, J
EM: withers@bu.edu
AF: Boston University, Center for Space Physics 725 Commonwealth Avenue, Boston, MA 02215 United States
AU: Rishbeth, H
EM: withers@bu.edu
AF: Boston University, Center for Space Physics 725 Commonwealth Avenue, Boston, MA 02215 United States
AU: Hinson, D
EM: withers@bu.edu
AF: Stanford University, Department of Electrical Engineering Stanford University, Stanford, CA 94305 United States
AU: Reinisch, B
EM: withers@bu.edu
AF: University of Massachusetts Lowell, 600 Suffolk Street, Lowell, MA 01854 United States
AB: Disturbances on the Sun affect the other bodies in the solar system and their environments. Solar flares cause sudden ionospheric disturbances at Earth and coronal mass ejections cause geomagnetic storms and auroral displays at Earth and other planets. We present the first observations of the effects of a solar flare on the upper atmosphere of another planet. A large solar flare on 15 April 2001 caused electron densities in the bottomside martian ionosphere to increase by 100 to 200 percent. Electron densities in the terrestrial ionosphere also increased in response to the flare. Comparative studies of events such as these will improve our knowledge of the solar X-ray spectrum and secondary ionization yields from the interaction of X-rays and molecules.
DE: 5405 Atmospheres (0343, 1060)
SC: SPA-Aeronomy [SA]
MN: Fall Meeting 2005