Suprathermal particles from corotating interaction regions during the first perihelion pass of Solar Orbiter

被引：13

作者：

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

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

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

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

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

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

Berger, L. ^{[3
]}

Boden, S. ^{[3
,4
]}

Cernuda, I ^{[2
]}

Lara, F. Espinosa ^{[2
]}

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

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

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

Kulkarni, S. R. ^{[3
,5
]}

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

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

Pacheco, D. ^{[3
]}

Polo, O. R. ^{[2
]}

Prieto, M. ^{[2
]}

Ravanbakhsh, A. ^{[3
,7
]}

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

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

Seifert, H. ^{[1
]}

Terasa, J. C. ^{[3
]}

Tyagi, K. ^{[1
,8
]}

Xu, Z. ^{[3
]}

Yedla, M. ^{[3
,7
]}

机构：

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

[2] Univ Alcala, Space Res Grp, Madrid, Spain

[3] Christian Albrechts Univ Kiel, Inst Expt & Angewande Phys, Kiel, Germany

[4] DSI Datensicherheit GmbH, Rodendamm 34, D-28816 Stuhr, Germany

[5] Deutsch Elektronen Synchrotron DESY, Platanenallee 6, D-15738 Zeuthen, Germany

[6] German Aerosp Ctr DLR, Dept Extrasolar Planets & Atmospheres, Berlin, Germany

[7] Max Planck Inst Solar Syst Res, Justus von Liebig Weg 3, D-37077 Gottingen, Germany

[8] Univ Colorado, LASP, Boulder, CO 80309 USA

来源：

ASTRONOMY & ASTROPHYSICS | 2021年 / 656卷

关键词：

acceleration of particles; solar wind; Sun; abundances; interplanetary medium; shock waves; ENERGETIC PARTICLES; RADIAL GRADIENTS; SPECTRA; ACCELERATION; PROBE;

D O I：

10.1051/0004-6361/202039870

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The first orbit of Solar Orbiter provided comprehensive measurements of six corotating interaction regions (CIRs) within 1 au. Five of these CIRs were also observed by ACE at 1 au, allowing for comparisons of the suprathermal ion intensities and spectra at different radial distances. Only subtle modulations of the He-4 spectral slopes are observed between Solar Orbiter and ACE. Additionally, the radial gradients of 226-320 keV/nuc He-4 ion intensities between Solar Orbiter and ACE are similar to that of 1.53 MeV H reported by Van Hollebeke et al. (1978, J. Geophys. Res., 83, A10). These observations provide a new addition to the study of the radial dependence of CIR-associated suprathermal ions in the inner heliosphere.

引用

页数：6

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