Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2020GL088927 |
MAVEN SEP observations of Scorpius X‐1 X‐rays at Mars: A mid‐atmosphere occultation analysis technique | |
A. Rahmati; D. E. Larson; T. E. Cravens; R. J. Lillis; C. O. Lee; P. A. Dunn | |
2020-10-29 | |
发表期刊 | Geophysical Research Letters
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出版年 | 2020 |
英文摘要 | We report on the first observations of atmospheric occultations at Mars of ~10 keV X‐rays from an extra‐solar source identified as Scorpius X‐1. The measurements are taken by the SEP (Solar Energetic Particle) instrument on the MAVEN (Mars Atmosphere and Volatile EvolutioN) spacecraft. The detected X‐ray photons from Scorpius X‐1 penetrate the Martian atmosphere down to ~70 km altitude, before being attenuated by the neutrals in the atmosphere. The occultation altitude varies by a few km depending on the source X‐ray energy and the atmospheric neutral density. In this work, we study the detection response of SEP to Scorpius X‐1 X‐rays and demonstrate that X‐ray occultation data can be used in conjunction with a model of the light extinction curve in order to gain insights into the neutral density of the Mars atmosphere in the 50‐100 km altitude range, an important and largely unexplored altitude range at Mars. |
领域 | 气候变化 |
URL | 查看原文 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/301812 |
专题 | 气候变化 |
推荐引用方式 GB/T 7714 | A. Rahmati,D. E. Larson,T. E. Cravens,等. MAVEN SEP observations of Scorpius X‐1 X‐rays at Mars: A mid‐atmosphere occultation analysis technique[J]. Geophysical Research Letters,2020. |
APA | A. Rahmati,D. E. Larson,T. E. Cravens,R. J. Lillis,C. O. Lee,&P. A. Dunn.(2020).MAVEN SEP observations of Scorpius X‐1 X‐rays at Mars: A mid‐atmosphere occultation analysis technique.Geophysical Research Letters. |
MLA | A. Rahmati,et al."MAVEN SEP observations of Scorpius X‐1 X‐rays at Mars: A mid‐atmosphere occultation analysis technique".Geophysical Research Letters (2020). |
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