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The Spectrum of the Solar Wind Charge Exchange Emission: Contribution to the Soft X-ray Background

Dimitra Koutroumpa 1 Rosine Lallement 1 V. Kharchenko 2
1 HEPPI - LATMOS
LATMOS - Laboratoire Atmosphères, Milieux, Observations Spatiales
Abstract : Solar Wind Charge-Exchange (SWCX) is nowadays recognised as a non-negligible source of soft X-ray emission, contributing to an unknown degree to the diffuse soft X-ray background (SXRB). In this paper, we relate the general characteristics of the SWCX emission spectrum between 0.1 and 1 keV and its contribution to the local interstellar SXRB emission in comparison with the unabsorbed thermal component attributed to the supposedly hot (~106 K) Local Bubble. At low galactic latitudes (below ~30 degrees) our computed SWCX brightness reaches a level comparable to the observed signal, suggesting the absence or a very low pressure of the hot gas close to the disk
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https://hal.archives-ouvertes.fr/hal-00415164
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Submitted on : Thursday, September 10, 2009 - 1:36:41 PM
Last modification on : Friday, January 10, 2020 - 3:42:32 PM

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Dimitra Koutroumpa, Rosine Lallement, V. Kharchenko. The Spectrum of the Solar Wind Charge Exchange Emission: Contribution to the Soft X-ray Background. The Local Bubble and Beyond II: Proceedings of the International Conference, AIP Conference Proceedings, Apr 2008, Philadelphia (Pennsylvania), United States. pp.62-73, ⟨10.1063/1.3211835⟩. ⟨hal-00415164⟩

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