Dispersive Suprathermal Ion Events Observed by the Parker Solar Probe Mission

被引：1

作者：

Alnussirat, S. T. ^{[1
]}

Livi, R. ^{[1
]}

Larson, D. E. ^{[1
]}

Rahmati, A. ^{[1
]}

Whittlesey, P. L. ^{[1
]}

Romeo, O. ^{[1
]}

Badman, S. T. ^{[2
]}

Buitrago-Casas, Milo ^{[1
]}

Oliveros, Juan Carlos Martinez ^{[1
]}

Pulupa, M. ^{[1
]}

Bale, S. D. ^{[1
,3
]}

Huang, J. ^{[1
]}

Verniero, J. ^{[4
]}

Raouafi, N. ^{[5
]}

Mitchell, Donald ^{[5
]}

Mccomas, D. J. ^{[6
]}

Hill, Matt ^{[5
]}

Cohen, Christina ^{[7
]}

机构：

[1] Univ Calif Berkeley, Space Sci Lab, Berkeley, CA 94720 USA

[2] Harvard & Smithsonian, Ctr Astrophys, Cambridge, MA 02138 USA

[3] Univ Calif Berkeley, Phys Dept, Berkeley, CA 94720 USA

[4] NASA Goddard Space Flight Ctr, Heliophys Sci Div, Greenbelt, MD 20771 USA

[5] Johns Hopkins Univ, Johns Hopkins Appl Phys Lab, Baltimore, MD 20723 USA

[6] Princeton Univ, Dept Astrophys Sci, Princeton, NJ 08544 USA

[7] CALTECH, Pasadena, CA 91125 USA

来源：

ASTROPHYSICAL JOURNAL LETTERS | 2023年 / 954卷 / 01期

关键词：

PARTICLE-ACCELERATION;

D O I：

10.3847/2041-8213/acf21c

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

During Encounter 11, Parker Solar Probe observed a low-energy dispersive ions event of solar origin. The event was observed in the SPAN-I and IS & ODOT;IS EPI-Lo sensors. The event started at a few MeV energy in the EPI-Lo sensor and progressed down in energy to & AP;1 keV and merged with the bulk of the solar wind. This event is substantially different from typical solar energetic particles because the energetic population shows a distinct peak in the energy spectrum that descends in energy (not a power-law tail). In this Letter, we explore this event's nature, origin, and characteristics.

引用

页数：4

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