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
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.
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页数:6
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