3He-rich solar energetic particle events observed on the first perihelion pass of Solar Orbiter

被引：11

作者：

Mason, G. M. ^{[1
]}

Ho, G. C. ^{[1
]}

Allen, R. C. ^{[1
]}

Rodriguez-Pacheco, J. ^{[2
]}

Wimmer-Schweingruber, R. F. ^{[3
]}

Bucik, R. ^{[4
]}

Gomez-Herrero, R. ^{[2
]}

Lario, D. ^{[5
]}

von Forstner, J. L. F. ^{[3
]}

Andrews, G. B. ^{[1
]}

Berger, L. ^{[3
]}

Cernuda, I ^{[2
]}

Lara, F. Espinosa ^{[2
]}

Lees, W. J. ^{[1
]}

Martin, C. ^{[3
,6
]}

Pacheco, D. ^{[3
]}

Prieto, M. ^{[2
]}

Sanchez-Prieto, S. ^{[2
]}

Hayes, J. R. ^{[1
]}

Schlemm, C. E. ^{[1
]}

Seifert, H. ^{[1
]}

Tyagi, K. ^{[1
,7
]}

机构：

[1] Johns Hopkins Univ, Appl Phys Lab, Laurel, MD 20723 USA

[2] Univ Alcala, Space Res Grp, Alcala De Henares, Spain

[3] Christian Albrechts Univ Kiel, Inst Experimentelle & Angew Phys, Kiel, Germany

[4] Southwest Res Inst, San Antonio, TX USA

[5] NASA Goddard Space Flight Ctr, Greenbelt, MD USA

[6] German Aerosp Ctr DLR, Berlin, Germany

[7] Univ Colorado, LASP, Boulder, CO USA

来源：

ASTRONOMY & ASTROPHYSICS | 2021年 / 656卷

关键词：

acceleration of particles; Sun; abundances; flares; particle emission; ABUNDANCES; HEAVY; IONS; ACCELERATION; SUN;

D O I：

10.1051/0004-6361/202039752

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We report observations of five impulsive solar energetic particle (SEP) events observed inside 1 au during the first perihelion pass of the Solar Orbiter mission, which was launched in February 2020. These small events were all reasonably associated with active regions observed from Earth but which had rotated out of view by the time of the Solar Orbiter observations. Even though most of the events were small, their spectral forms, He-3 content, and association with type III bursts convincingly identifies them as He-3-rich impulsive SEP events with properties similar to those previously observed at 1 au. Three of the events showed fast ion rise times, and two of them had long-lasting anisotropies consistent with the Compton-Getting effect.

引用

页数：6

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