Other
Scientific paper
May 2011
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011spd....42.2317y&link_type=abstract
American Astronomical Society, SPD meeting #42, #23.17; Bulletin of the American Astronomical Society, Vol. 43, 2011
Other
Scientific paper
The association between EUV waves and coronal mass ejections (CMEs) is difficult to establish for disk flares using observations from the Sun-Earth line because of visibility issues. The other possibility is the real absence of mass motion in flares. This issue can be effectively addressed by the twin spacecraft of the Solar Terrestrial Relations Observatory (STEREO) mission. The Ahead and Behind spacecraft of the STEREO mission were located around ±90° from the Sun-Earth line from 2010 to 2012. This is the first opportunity to investigate the connection between CMEs and EUV waves with a high degree of accuracy. During January 28 - March 9, 2011, two X- and 28 M-class flares occurred. We examined their CME associations using STEREO/SECCHI and SOHO/LASCO observations, and EUV wave associations using SDO/AIA data. We found that 10 out of 30 flares were associated with clear flux-rope CMEs (FRCMEs) while 16 did not have any erupting features above the flaring regions in the coronagraph images. The remaining four flares had narrow CMEs or outflow above the flaring regions but their connection to the flares is unclear. We also found all of the FRCME-associated flares had clear EUV waves, while the flares without CMEs also lacked EUV waves. We found one-to-one correspondence between EUV waves and FRCMEs.
Gopalswamy Nat
Yashiro Seiji
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