In-ecliptic CIR-associated energetic particle events and polar coronal hole structures:: SOHO/COSTEP observations for the Whole Sun Month Campaign

被引：13

作者：

Posner, A

Bothmer, V

Thompson, BJ

Kunow, H

Heber, B

Müller-Mellin, R

Lazarus, AJ

Szabo, A

Mikic, Z

Linker, JA

机构：

[1] Univ Kiel, IEAP, D-24118 Kiel, Germany

[2] NASA, Goddard Space Flight Ctr, Greenbelt, MD 20771 USA

[3] CEA, DSM, DAPNIA, Serv Astrophys,CE Saclay, F-91191 Gif Sur Yvette, France

[4] MIT, Cambridge, MA 02139 USA

[5] Sci Applicat Int Corp, San Diego, CA 92121 USA

来源：

JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS | 1999年 / 104卷 / A5期

关键词：

D O I：

10.1029/98JA02654

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The Solar and Heliospheric Observatory (SOHO), in halo orbit around the L1 Lagrangian point of the Sun-Earth system, combines a unique set of instruments for studies of the Sun and the heliosphere. SOHO's Comprehensive Suprathermal and Energetic Particle Analyser measures in situ particles in the energy range 44 keV/particle to above 53 MeV/nucleon. For the time period of the Whole Sun Month Campaign in mid 1996 we have identified recurrent energetic particle intensity increases in association with corotating interaction regions (CIRs) in the energy range <10 MeV. Solar wind measurements of the Wind spacecraft were used to estimate the corresponding magnetic source location in Carrington longitude for comparison of energetic particles with synoptic maps of the lower corona, derived from images of SOHO's Extreme-ultraviolet Imaging Telescope, The comparison reveals a close relationship of latitudinal extensions of polar coronal holes, situated in regions up to 40 degrees away from the ecliptic, with CIR-associated in-ecliptic particle events.

引用

页码：9881 / 9890

页数：10