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Article: MESSENGER observations of the energization and heating of protons in the near-Mercury magnetotail

TitleMESSENGER observations of the energization and heating of protons in the near-Mercury magnetotail
Authors
Keywordsdawn-dusk distributions
dipolarization
proton energization and heating
substorm at Mercury
suprathermal particle flux
Issue Date2017
Citation
Geophysical Research Letters, 2017, v. 44, n. 16, p. 8149-8158 How to Cite?
AbstractThe energization and heating processes for protons in the near-Mercury tail are examined with MErcury Surface, Space ENvironment, GEochemistry, and Ranging (MESSENGER) observations. In a case study, suprathermal proton particle flux (STPF) and proton temperature are observed to be clearly enhanced during near-Mercury substorm dipolarizations, indicating the proton energization and heating processes. STPF and proton temperature distributions in near-Mercury central plasma sheets display dawn-dusk asymmetries, with higher values in the dawnside plasma sheet, i.e., postmidnight, than in the duskside, i.e., premidnight. Further investigations reveal that these asymmetries are more prominent during active periods in Mercury's magnetosphere, as compared to quiet periods. Magnetic field variations in the ZMSM component display a similar feature, with variations being more prominent on the dawnside than the duskside during active periods. We propose that the dawn-dusk asymmetry in the distributions of protons could be due to the fact that more substorm dipolarizations were initiated on the dawnside of Mercury's magnetotail.
Persistent Identifierhttp://hdl.handle.net/10722/334496
ISSN
2023 Impact Factor: 4.6
2023 SCImago Journal Rankings: 1.850
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorSun, W. J.-
dc.contributor.authorRaines, J. M.-
dc.contributor.authorFu, S. Y.-
dc.contributor.authorSlavin, J. A.-
dc.contributor.authorWei, Y.-
dc.contributor.authorPoh, G. K.-
dc.contributor.authorPu, Z. Y.-
dc.contributor.authorYao, Z. H.-
dc.contributor.authorZong, Q. G.-
dc.contributor.authorWan, W. X.-
dc.date.accessioned2023-10-20T06:48:33Z-
dc.date.available2023-10-20T06:48:33Z-
dc.date.issued2017-
dc.identifier.citationGeophysical Research Letters, 2017, v. 44, n. 16, p. 8149-8158-
dc.identifier.issn0094-8276-
dc.identifier.urihttp://hdl.handle.net/10722/334496-
dc.description.abstractThe energization and heating processes for protons in the near-Mercury tail are examined with MErcury Surface, Space ENvironment, GEochemistry, and Ranging (MESSENGER) observations. In a case study, suprathermal proton particle flux (STPF) and proton temperature are observed to be clearly enhanced during near-Mercury substorm dipolarizations, indicating the proton energization and heating processes. STPF and proton temperature distributions in near-Mercury central plasma sheets display dawn-dusk asymmetries, with higher values in the dawnside plasma sheet, i.e., postmidnight, than in the duskside, i.e., premidnight. Further investigations reveal that these asymmetries are more prominent during active periods in Mercury's magnetosphere, as compared to quiet periods. Magnetic field variations in the ZMSM component display a similar feature, with variations being more prominent on the dawnside than the duskside during active periods. We propose that the dawn-dusk asymmetry in the distributions of protons could be due to the fact that more substorm dipolarizations were initiated on the dawnside of Mercury's magnetotail.-
dc.languageeng-
dc.relation.ispartofGeophysical Research Letters-
dc.subjectdawn-dusk distributions-
dc.subjectdipolarization-
dc.subjectproton energization and heating-
dc.subjectsubstorm at Mercury-
dc.subjectsuprathermal particle flux-
dc.titleMESSENGER observations of the energization and heating of protons in the near-Mercury magnetotail-
dc.typeArticle-
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1002/2017GL074276-
dc.identifier.scopuseid_2-s2.0-85028355057-
dc.identifier.volume44-
dc.identifier.issue16-
dc.identifier.spage8149-
dc.identifier.epage8158-
dc.identifier.eissn1944-8007-
dc.identifier.isiWOS:000410658800007-

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