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The formation of an equatorial coronal hole
Yang LH(杨丽恒)1; Jiang YC(姜云春)1; Zhang, J2
会议录名称IAU Symposium Proceedings Series - SOLAR AND STELLAR VARIABILITY: IMPACT ON EARTH AND PLANETS
2010
卷号5
期号264
页码295-297
DOI10.1017/S1743921309992833
会议录编者/会议主办者Kosoviechev, AG; Andrei, AH; Rozelot, JP
产权排序第1完成单位
收录类别CPCI
会议名称264th Symposium of the International-Astronomical-Union
会议日期2009-08-03
会议地点Rio de Janeiro, BRAZIL
会议赞助商Int Astron Union; Observ Nacl; IAU Div II, III & IV
关键词Sun: Corona Sun:Evolution Sun: Magnetic Fields
摘要

The formation of an equatorial corona] hole (CH) from 2006 January 9 to 12 was simultaneously observed by GOES-12/SXI, SOHO/EIT and SOHO/MDI instruments. The varieties of soft X-ray and EUV brightness, coronal temperature; and total magnetic flux in the CH were examined and compared with that of a quiet-sun (QS) region nearby. The following results are obtained. (1) A preexisting dark lane appeared on the location of the followed CH and was reinforced by three enhanced networks. (2) The CH gradually formed in about 81 hours and was predominated by positive magnetic flux. (3) During the formation, the soft X-ray and EUV brightness, coronal temperature, and total magnetic flux obviously decreased in the CH, but were almost no change in the QS region. The decrease of the total magnetic flux may be the result of magnetic reconnection between the open and closed magnetic lines; probably indicating the physical mechanism for the birth of the CH.

语种英语
学科领域天文学 ; 天体物理学 ; 太阳与太阳系
学科门类理学 ; 理学::天文学
文章类型Proceedings Paper
出版者CAMBRIDGE UNIV PRESS
出版地THE PITT BUILDING, TRUMPINGTON ST, CAMBRIDGE CB2 1RP, CAMBS, ENGLAND
ISBN号978-0-521-76492-6
ISSN号1743-9213
URL查看原文
归档日期2010-03-28
WOS记录号WOS:000280547700053
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
关键词[WOS]Imager
引用统计
文献类型会议论文
条目标识符http://ir.ynao.ac.cn/handle/114a53/6562
专题太阳物理研究组
通讯作者Yang LH(杨丽恒)
作者单位1.National Astronomical Observatories/Yunnan Observatory, CAS, Kunming 650011, China
2.National Astronomical Observatories, CAS, Beijing 100012, China
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Yang LH,Jiang YC,Zhang, J. The formation of an equatorial coronal hole[C]//Kosoviechev, AG; Andrei, AH; Rozelot, JP. THE PITT BUILDING, TRUMPINGTON ST, CAMBRIDGE CB2 1RP, CAMBS, ENGLAND:CAMBRIDGE UNIV PRESS,2010:295-297.
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