Suprathermal particles from corotating interaction regions during the first perihelion pass of solar orbiter

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 di erent radial distances. Only subtle modu...

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Detalhes bibliográficos
Autores: Allen, Robert C., Mason, Glenn M., Ho, George C., Rodríguez-Pacheco Martín, Javier|||0000-0002-4240-1115, Wimmer-Schweingruber, R. F., Andrews, G. B., Berger, Lars, Boden, S., Cernuda Cangas, Ignacio Manuel|||0000-0001-8432-5379, Espinosa Lara, Francisco|||0000-0001-9039-8822, Freiherr Von Forstner, J.L., Gómez Herrero, Raúl|||0000-0002-5705-9236, Hayes, J. R., Kulkarni, S. R., Lees, W. J., Martin, C., Pacheco, D., Rodríguez Polo, Óscar|||0000-0002-7893-4247, Prieto Mateo, Manuel|||0000-0003-3050-3445, Ravanbakhsh, A., Sánchez Prieto, Sebastián|||0000-0002-6729-7932, Schlemm, C. E., Seifert, H., Terasa, J. C., Tyagi, K., Xu, Zigong, Yedla, M.
Formato: artículo
Fecha de publicación:2021
País:España
Recursos:Universidad de Alcalá (UAH)
Repositorio:e_Buah Biblioteca Digital Universidad de Alcalá
Idioma:inglés
OAI Identifier:oai:ebuah.uah.es:10017/60593
Acesso em linha:http://hdl.handle.net/10017/60593
https://dx.doi.org/10.1051/0004-6361/202039870
Access Level:acceso abierto
Palavra-chave:acceleration of particles solar wind Sun: abundances interplanetary medium shock waves
Descrição
Resumo: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 di erent radial distances. Only subtle modulations of the 4He spectral slopes are observed between Solar Orbiter and ACE. Additionally, the radial gradients of 226�320 keV/nuc 4He ion intensities between Solar Orbiter and ACE are similar to that of 1.53MeV 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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