Astronomy and Astrophysics – Astrophysics
Scientific paper
Aug 2009
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009aipc.1156...37c&link_type=abstract
THE LOCAL BUBBLE AND BEYOND II: Proceedings of the International Conference. AIP Conference Proceedings, Volume 1156, pp. 37-51
Astronomy and Astrophysics
Astrophysics
1
Particle Emission, Solar Wind, Corona, Supernova Remnants, Magnetosheath, Galactic Halos, Interstellar Medium And Nebulae In External Galaxies
Scientific paper
Astrophysical x-ray emission is typically associated with hot collisional plasmas, such as the million degree gas residing in the solar corona or in supernova remnants. However, x-rays can also be produced in cooler gas by charge exchange collisions between highly-charged ions and neutral atoms or molecules. This mechanism produces soft x-ray emission plasma when the solar wind interacts with neutral gas in the solar system. Examples of such x-ray sources include comets, the terrestrial magnetosheath, and the heliosphere (where the solar wind interacts with incoming interstellar neutral gas). Heliospheric emission is thought to make a significant contribution to the observed soft x-ray background (SXRB). This emission needs to be better understood so that it can be distinguished from the SXRB emission associated with hot interstellar gas and the galactic halo.
Collier Mark
Cravens Thomas E.
Kuntz Kip
Medvedev Mikhail
Robertson Ina P.
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