SIMULTANEOUS OBSERVATIONS OF A LARGE-SCALE WAVE EVENT IN THE SOLAR ATMOSPHERE: FROM PHOTOSPHERE TO CORONA

	SIMULTANEOUS OBSERVATIONS OF A LARGE-SCALE WAVE EVENT IN THE SOLAR ATMOSPHERE: FROM PHOTOSPHERE TO CORONA
	Shen YD(申远灯)1,2 ; Liu Y(刘煜)1
刊名	ASTROPHYSICAL JOURNAL LETTERS
	2012-06-20
卷号	752 期号:2
关键词	Sun: activity Sun: chromosphere Sun: corona Sun: flares Sun: transition region
ISSN号	2041-8205
通讯作者	Shen, YD (reprint author), Chinese Acad Sci, Yunnan Astron Observ, Kunming 650011, Peoples R China.
产权排序	第一完成单位
英文摘要	For the first time, we report a large-scale wave that was observed simultaneously in the photosphere, chromosphere, transition region, and low corona layers of the solar atmosphere. Using the high temporal and high spatial resolution observations taken by the Solar Magnetic Activity Research Telescope at Hida Observatory and the Atmospheric Imaging Assembly (AIA) on board Solar Dynamic Observatory, we find that the wave evolved synchronously at different heights of the solar atmosphere, and it propagated at a speed of 605 km s(-1) and showed a significant deceleration (-424 ms(-2)) in the extreme-ultraviolet (EUV) observations. During the initial stage, the wave speed in the EUVobservations was 1000 km s(-1), similar to those measured from the AIA 1700 angstrom (967 km s(-1)) and 1600 angstrom (893 km s(-1)) observations. The wave was reflected by a remote region with open fields, and a slower wave-like feature at a speed of 220 km s(-1) was also identified following the primary fast wave. In addition, a type-II radio burst was observed to be associated with the wave. We conclude that this wave should be a fast magnetosonic shock wave, which was first driven by the associated coronal mass ejection and then propagated freely in the corona. As the shock wave propagated, its legs swept the solar surface and thereby resulted in the wave signatures observed in the lower layers of the solar atmosphere. The slower wave-like structure following the primary wave was probably caused by the reconfiguration of the low coronal magnetic fields, as predicted in the field-line stretching model.
学科主题	Astronomy & Astrophysics
WOS标题词	Science & Technology ; Physical Sciences
类目[WOS]	Astronomy & Astrophysics
研究领域[WOS]	Astronomy & Astrophysics
关键词[WOS]	EXTREME-ULTRAVIOLET WAVE ; X-RAY OBSERVATIONS ; I 10830 ANGSTROM ; H-ALPHA MORETON ; 2006 DECEMBER 6 ; EIT WAVES ; EUV WAVE ; NUMERICAL-SIMULATION ; IMAGING TELESCOPE ; MASS EJECTION
收录类别	SCI
原文出处	http://iopscience.iop.org/article/10.1088/2041-8205/752/2/L23/meta
语种	英语
WOS记录号	WOS:000305461600006
内容类型	期刊论文
源URL	[http://ir.ynao.ac.cn/handle/114a53/7184]
专题	云南天文台_选址与日冕观测组
作者单位	1.Yunnan Astronomical Observatory, Chinese Academy of Sciences, Kunming 650011, China 2.Graduate University of Chinese Academy of Sciences, Beijing 100049, China
推荐引用方式 GB/T 7714	Shen YD,Liu Y. SIMULTANEOUS OBSERVATIONS OF A LARGE-SCALE WAVE EVENT IN THE SOLAR ATMOSPHERE: FROM PHOTOSPHERE TO CORONA[J]. ASTROPHYSICAL JOURNAL LETTERS,2012,752(2).
APA	Shen YD,&Liu Y.(2012).SIMULTANEOUS OBSERVATIONS OF A LARGE-SCALE WAVE EVENT IN THE SOLAR ATMOSPHERE: FROM PHOTOSPHERE TO CORONA.ASTROPHYSICAL JOURNAL LETTERS,752(2).
MLA	Shen YD,et al."SIMULTANEOUS OBSERVATIONS OF A LARGE-SCALE WAVE EVENT IN THE SOLAR ATMOSPHERE: FROM PHOTOSPHERE TO CORONA".ASTROPHYSICAL JOURNAL LETTERS 752.2(2012).