First Observation of Transport of Solar Wind Protons Scattered From Magnetic Anomalies Into the Near Lunar Wake: Observations by SARA/Chandrayaan-1
We report the first observational evidence for the transport of the solar wind protons scattered from the lunar magnetic anomaly (LMA) into the near wake region from SWIM/Sub‐keV Atom Reflecting Analyzer (SARA) aboard Chandrayaan‐1. These protons with high angular spread are observed in the near wak...
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American Geophysical Union
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ftunivbern:oai:boris.unibe.ch:122698 2023-08-20T04:09:51+02:00 First Observation of Transport of Solar Wind Protons Scattered From Magnetic Anomalies Into the Near Lunar Wake: Observations by SARA/Chandrayaan-1 Dhanya, M. B. Bhardwaj, Anil Alok, Abhinaw Futaana, Yoshifumi Barabash, Stas Wieser, Martin Holmström, Mats Wurz, Peter 2018 application/pdf https://boris.unibe.ch/122698/1/Dhanya_et_al-2018-Geophysical_Research_Letters.pdf https://boris.unibe.ch/122698/ eng eng American Geophysical Union https://boris.unibe.ch/122698/ info:eu-repo/semantics/openAccess Dhanya, M. B.; Bhardwaj, Anil; Alok, Abhinaw; Futaana, Yoshifumi; Barabash, Stas; Wieser, Martin; Holmström, Mats; Wurz, Peter (2018). First Observation of Transport of Solar Wind Protons Scattered From Magnetic Anomalies Into the Near Lunar Wake: Observations by SARA/Chandrayaan-1. Geophysical Research Letters, 45(17), pp. 8826-8833. American Geophysical Union 10.1029/2018gl079330 <http://dx.doi.org/10.1029/2018gl079330> 520 Astronomy 620 Engineering 530 Physics info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion PeerReviewed 2018 ftunivbern https://doi.org/10.1029/2018gl079330 2023-07-31T21:48:03Z We report the first observational evidence for the transport of the solar wind protons scattered from the lunar magnetic anomaly (LMA) into the near wake region from SWIM/Sub‐keV Atom Reflecting Analyzer (SARA) aboard Chandrayaan‐1. These protons with high angular spread are observed in the near wake region for specific orientations of interplanetary magnetic field. The typical energy range is 600–1,000 eV, which is either smaller or comparable to that of solar wind. Using our backtracing model, the source region of these protons is found to be the large LMA at South Pole‐Aitken basin on the dayside, suggesting that these are solar wind protons forward scattered from LMA at the South Pole‐Aitken. The flux of these protons is ~5 × 10⁻⁴ of the solar wind proton flux, which is comparable to the proton population in near wake due to other known processes. Such protons can significantly affect the electromagnetic environment in near wake region. Article in Journal/Newspaper South pole BORIS (Bern Open Repository and Information System, University of Bern) South Pole Aitken ENVELOPE(-44.516,-44.516,-60.733,-60.733) Geophysical Research Letters 45 17 8826 8833 |
institution |
Open Polar |
collection |
BORIS (Bern Open Repository and Information System, University of Bern) |
op_collection_id |
ftunivbern |
language |
English |
topic |
520 Astronomy 620 Engineering 530 Physics |
spellingShingle |
520 Astronomy 620 Engineering 530 Physics Dhanya, M. B. Bhardwaj, Anil Alok, Abhinaw Futaana, Yoshifumi Barabash, Stas Wieser, Martin Holmström, Mats Wurz, Peter First Observation of Transport of Solar Wind Protons Scattered From Magnetic Anomalies Into the Near Lunar Wake: Observations by SARA/Chandrayaan-1 |
topic_facet |
520 Astronomy 620 Engineering 530 Physics |
description |
We report the first observational evidence for the transport of the solar wind protons scattered from the lunar magnetic anomaly (LMA) into the near wake region from SWIM/Sub‐keV Atom Reflecting Analyzer (SARA) aboard Chandrayaan‐1. These protons with high angular spread are observed in the near wake region for specific orientations of interplanetary magnetic field. The typical energy range is 600–1,000 eV, which is either smaller or comparable to that of solar wind. Using our backtracing model, the source region of these protons is found to be the large LMA at South Pole‐Aitken basin on the dayside, suggesting that these are solar wind protons forward scattered from LMA at the South Pole‐Aitken. The flux of these protons is ~5 × 10⁻⁴ of the solar wind proton flux, which is comparable to the proton population in near wake due to other known processes. Such protons can significantly affect the electromagnetic environment in near wake region. |
format |
Article in Journal/Newspaper |
author |
Dhanya, M. B. Bhardwaj, Anil Alok, Abhinaw Futaana, Yoshifumi Barabash, Stas Wieser, Martin Holmström, Mats Wurz, Peter |
author_facet |
Dhanya, M. B. Bhardwaj, Anil Alok, Abhinaw Futaana, Yoshifumi Barabash, Stas Wieser, Martin Holmström, Mats Wurz, Peter |
author_sort |
Dhanya, M. B. |
title |
First Observation of Transport of Solar Wind Protons Scattered From Magnetic Anomalies Into the Near Lunar Wake: Observations by SARA/Chandrayaan-1 |
title_short |
First Observation of Transport of Solar Wind Protons Scattered From Magnetic Anomalies Into the Near Lunar Wake: Observations by SARA/Chandrayaan-1 |
title_full |
First Observation of Transport of Solar Wind Protons Scattered From Magnetic Anomalies Into the Near Lunar Wake: Observations by SARA/Chandrayaan-1 |
title_fullStr |
First Observation of Transport of Solar Wind Protons Scattered From Magnetic Anomalies Into the Near Lunar Wake: Observations by SARA/Chandrayaan-1 |
title_full_unstemmed |
First Observation of Transport of Solar Wind Protons Scattered From Magnetic Anomalies Into the Near Lunar Wake: Observations by SARA/Chandrayaan-1 |
title_sort |
first observation of transport of solar wind protons scattered from magnetic anomalies into the near lunar wake: observations by sara/chandrayaan-1 |
publisher |
American Geophysical Union |
publishDate |
2018 |
url |
https://boris.unibe.ch/122698/1/Dhanya_et_al-2018-Geophysical_Research_Letters.pdf https://boris.unibe.ch/122698/ |
long_lat |
ENVELOPE(-44.516,-44.516,-60.733,-60.733) |
geographic |
South Pole Aitken |
geographic_facet |
South Pole Aitken |
genre |
South pole |
genre_facet |
South pole |
op_source |
Dhanya, M. B.; Bhardwaj, Anil; Alok, Abhinaw; Futaana, Yoshifumi; Barabash, Stas; Wieser, Martin; Holmström, Mats; Wurz, Peter (2018). First Observation of Transport of Solar Wind Protons Scattered From Magnetic Anomalies Into the Near Lunar Wake: Observations by SARA/Chandrayaan-1. Geophysical Research Letters, 45(17), pp. 8826-8833. American Geophysical Union 10.1029/2018gl079330 <http://dx.doi.org/10.1029/2018gl079330> |
op_relation |
https://boris.unibe.ch/122698/ |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1029/2018gl079330 |
container_title |
Geophysical Research Letters |
container_volume |
45 |
container_issue |
17 |
container_start_page |
8826 |
op_container_end_page |
8833 |
_version_ |
1774723570068357120 |