Journal articles
Multiple Scattering Effects in the Interplanetary Medium: Evaluation Using SOHO SWAN and MAVEN EUVM Lyman α Measurements
Abstract : Interplanetary background measurements can be used to derive the solar flux that is illuminating the atoms in the interplanetary medium. We present a new algorithm combining measurements from the SWAN‐SOHO Lyman α photometer with Earth‐based solar flux measurements to derive the solar illuminating flux at Lyman α in any direction along the ecliptic plane. The modulations of the solar flux and the interplanetary background intensity are proportional. The proportionality coefficient is a direct measurement of the fraction of the interplanetary brightness that is due to single scattering in the interplanetary medium. We find that for an observer at 1 AU from the Sun, single scattering photons represent roughly 70% of the total brightness. This new algorithm is tested by a comparison with actual measurements from the EUVM‐MAVEN solar monitor in orbit around Mars since 2014.
Cited literature [27 references]
https://hal-insu.archives-ouvertes.fr/insu-02151127
Contributor : Catherine Cardon <>
Submitted on : Wednesday, September 11, 2019 - 5:58:49 PM
Last modification on : Friday, January 10, 2020 - 3:42:35 PM
Document(s) archivé(s) le : Saturday, February 8, 2020 - 5:42:07 AM
Contributor : Catherine Cardon <>
Submitted on : Wednesday, September 11, 2019 - 5:58:49 PM
Last modification on : Friday, January 10, 2020 - 3:42:35 PM
Document(s) archivé(s) le : Saturday, February 8, 2020 - 5:42:07 AM
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