Measurement of low-energy cosmic-ray electron and positron spectra at 1 AU with the AESOP-Lite spectrometer
We report on a new measurement of the cosmic ray (CR) electron and positron spectra in the energy range of 20 MeV -- 1 GeV. The data were taken during the first flight of the balloon-borne spectrometer AESOP-Lite (Anti Electron Sub Orbital Payload), which was flown from Esrange, Sweden, to Ellesmere...
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ftdatacite:10.48550/arxiv.2009.03437 2023-05-15T16:05:57+02:00 Measurement of low-energy cosmic-ray electron and positron spectra at 1 AU with the AESOP-Lite spectrometer Mechbal, Sarah Mangeard, Pierre-Simon Clem, John M. Evenson, Paul A. Johnson, Robert P. Lucas, Brian Roth, James 2020 https://dx.doi.org/10.48550/arxiv.2009.03437 https://arxiv.org/abs/2009.03437 unknown arXiv https://dx.doi.org/10.3847/1538-4357/abb46f arXiv.org perpetual, non-exclusive license http://arxiv.org/licenses/nonexclusive-distrib/1.0/ High Energy Astrophysical Phenomena astro-ph.HE Instrumentation and Methods for Astrophysics astro-ph.IM Solar and Stellar Astrophysics astro-ph.SR Instrumentation and Detectors physics.ins-det Space Physics physics.space-ph FOS Physical sciences article-journal Article ScholarlyArticle Text 2020 ftdatacite https://doi.org/10.48550/arxiv.2009.03437 https://doi.org/10.3847/1538-4357/abb46f 2022-03-10T15:03:37Z We report on a new measurement of the cosmic ray (CR) electron and positron spectra in the energy range of 20 MeV -- 1 GeV. The data were taken during the first flight of the balloon-borne spectrometer AESOP-Lite (Anti Electron Sub Orbital Payload), which was flown from Esrange, Sweden, to Ellesmere Island, Canada, in May 2018. The instrument accumulated over 130 hours of exposure at an average altitude of 3 g.cm$^{-2}$ of residual atmosphere. The experiment uses a gas Cherenkov detector and a magnetic spectrometer, consisting of a permanent dipole magnet and silicon strip detectors (SSDs), to identify particle type and measure the rigidity. Electrons and positrons were detected against a background of protons and atmospheric secondary particles. The primary cosmic ray spectra of electrons and positrons, as well as the re-entrant albedo fluxes, were extracted between 20 MeV -- 1 GeV during a positive solar magnetic polarity epoch. The positron fraction below 100 MeV appears flat, suggesting diffusion dominated solar modulation at low rigidity. The all-electron spectrum is presented and compared with models from a heliospheric numerical transport code. : 21 pages, 13 figures Article in Journal/Newspaper Ellesmere Island DataCite Metadata Store (German National Library of Science and Technology) Canada Ellesmere Island Esrange ENVELOPE(21.117,21.117,67.883,67.883) |
institution |
Open Polar |
collection |
DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
language |
unknown |
topic |
High Energy Astrophysical Phenomena astro-ph.HE Instrumentation and Methods for Astrophysics astro-ph.IM Solar and Stellar Astrophysics astro-ph.SR Instrumentation and Detectors physics.ins-det Space Physics physics.space-ph FOS Physical sciences |
spellingShingle |
High Energy Astrophysical Phenomena astro-ph.HE Instrumentation and Methods for Astrophysics astro-ph.IM Solar and Stellar Astrophysics astro-ph.SR Instrumentation and Detectors physics.ins-det Space Physics physics.space-ph FOS Physical sciences Mechbal, Sarah Mangeard, Pierre-Simon Clem, John M. Evenson, Paul A. Johnson, Robert P. Lucas, Brian Roth, James Measurement of low-energy cosmic-ray electron and positron spectra at 1 AU with the AESOP-Lite spectrometer |
topic_facet |
High Energy Astrophysical Phenomena astro-ph.HE Instrumentation and Methods for Astrophysics astro-ph.IM Solar and Stellar Astrophysics astro-ph.SR Instrumentation and Detectors physics.ins-det Space Physics physics.space-ph FOS Physical sciences |
description |
We report on a new measurement of the cosmic ray (CR) electron and positron spectra in the energy range of 20 MeV -- 1 GeV. The data were taken during the first flight of the balloon-borne spectrometer AESOP-Lite (Anti Electron Sub Orbital Payload), which was flown from Esrange, Sweden, to Ellesmere Island, Canada, in May 2018. The instrument accumulated over 130 hours of exposure at an average altitude of 3 g.cm$^{-2}$ of residual atmosphere. The experiment uses a gas Cherenkov detector and a magnetic spectrometer, consisting of a permanent dipole magnet and silicon strip detectors (SSDs), to identify particle type and measure the rigidity. Electrons and positrons were detected against a background of protons and atmospheric secondary particles. The primary cosmic ray spectra of electrons and positrons, as well as the re-entrant albedo fluxes, were extracted between 20 MeV -- 1 GeV during a positive solar magnetic polarity epoch. The positron fraction below 100 MeV appears flat, suggesting diffusion dominated solar modulation at low rigidity. The all-electron spectrum is presented and compared with models from a heliospheric numerical transport code. : 21 pages, 13 figures |
format |
Article in Journal/Newspaper |
author |
Mechbal, Sarah Mangeard, Pierre-Simon Clem, John M. Evenson, Paul A. Johnson, Robert P. Lucas, Brian Roth, James |
author_facet |
Mechbal, Sarah Mangeard, Pierre-Simon Clem, John M. Evenson, Paul A. Johnson, Robert P. Lucas, Brian Roth, James |
author_sort |
Mechbal, Sarah |
title |
Measurement of low-energy cosmic-ray electron and positron spectra at 1 AU with the AESOP-Lite spectrometer |
title_short |
Measurement of low-energy cosmic-ray electron and positron spectra at 1 AU with the AESOP-Lite spectrometer |
title_full |
Measurement of low-energy cosmic-ray electron and positron spectra at 1 AU with the AESOP-Lite spectrometer |
title_fullStr |
Measurement of low-energy cosmic-ray electron and positron spectra at 1 AU with the AESOP-Lite spectrometer |
title_full_unstemmed |
Measurement of low-energy cosmic-ray electron and positron spectra at 1 AU with the AESOP-Lite spectrometer |
title_sort |
measurement of low-energy cosmic-ray electron and positron spectra at 1 au with the aesop-lite spectrometer |
publisher |
arXiv |
publishDate |
2020 |
url |
https://dx.doi.org/10.48550/arxiv.2009.03437 https://arxiv.org/abs/2009.03437 |
long_lat |
ENVELOPE(21.117,21.117,67.883,67.883) |
geographic |
Canada Ellesmere Island Esrange |
geographic_facet |
Canada Ellesmere Island Esrange |
genre |
Ellesmere Island |
genre_facet |
Ellesmere Island |
op_relation |
https://dx.doi.org/10.3847/1538-4357/abb46f |
op_rights |
arXiv.org perpetual, non-exclusive license http://arxiv.org/licenses/nonexclusive-distrib/1.0/ |
op_doi |
https://doi.org/10.48550/arxiv.2009.03437 https://doi.org/10.3847/1538-4357/abb46f |
_version_ |
1766401863503052800 |