<P>We report on the first direct observation of a fast-mode wave propagating along and perpendicular to cool (171 angstrom) arcade loops observed by the Solar Dynamics Observatory/Atmospheric Imaging Assembly (AIA). The wave was associated with ...
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https://www.riss.kr/link?id=A107480324
2015
-
SCOPUS,SCIE
학술저널
L23
0
상세조회0
다운로드다국어 초록 (Multilingual Abstract)
<P>We report on the first direct observation of a fast-mode wave propagating along and perpendicular to cool (171 angstrom) arcade loops observed by the Solar Dynamics Observatory/Atmospheric Imaging Assembly (AIA). The wave was associated with ...
<P>We report on the first direct observation of a fast-mode wave propagating along and perpendicular to cool (171 angstrom) arcade loops observed by the Solar Dynamics Observatory/Atmospheric Imaging Assembly (AIA). The wave was associated with an impulsive/compact flare near the edge of a sunspot. The EUV wavefront expanded radially outward from the flare center and decelerated in the corona from 1060 to 760 km s(-1) within similar to 3-4 minutes. Part of the EUV wave propagated along a large-scale arcade of cool loops and was partially reflected back to the flare site. The phase speed of the wave was about 1450 km s(-1), which is interpreted as a fast-mode wave. A second overlying loop arcade, orientated perpendicular to the cool arcade, is heated and becomes visible in the AIA hot channels. These hot loops sway in time with the EUV wave, as it propagated to and fro along the lower loop arcade. We suggest that an impulsive energy release at one of the footpoints of the arcade loops causes the onset of an EUV shock wave that propagates along and perpendicular to the magnetic field.</P>