Hostname: page-component-cd9895bd7-7cvxr Total loading time: 0 Render date: 2025-01-05T11:58:36.304Z Has data issue: false hasContentIssue false
  • English
  • Français

Observation of Reconnection Inflow of a Solar Flare

Published online by Cambridge University Press:  13 May 2016

T. Yokoyama ,
K. Akita ,
T. Morimoto ,
K. Inoue  and
J. Newmark
T. Yokoyama
Affiliation:
National Astronomical Observatory of Japan, Nobeyama Radio Observatory, Minamimaki, Minamisaku, 384-1305, Japan
K. Akita
Affiliation:
Osaka Gakuin Univ., Suita, Osaka, 564-8511, Japan
T. Morimoto
Affiliation:
Kyoto Univ., Kyoto, 606-8502, Japan
K. Inoue
Affiliation:
Kyoto Univ., Kyoto, 606-8502, Japan
J. Newmark
Affiliation:
Emergent Information Technologies-East, GSFC/NASA, Greenbelt, MD20771, USA

Abstract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

We find an important piece of evidence for magnetic reconnection inflow in a flare on March 18, 1999. The flare occurred on the north-east limb, displaying a nice cusp-shaped soft X-ray loop and a plasmoid ejection typical for the long-duration-events. As the plasmoid is ejected, magnetic reconnection occurs at the disconnecting point. A clear ingoing pattern toward the magnetic X-point is seen. The velocity of this apparent motion is about 5 km sec−1, which is an upper limit on reconnection inflow speed. Based on this observation, we derive the reconnection rate as MA = 0.001 − 0.03, where MA is a Alfvén Mach number of the inflow.

Type
Session III: Active Region Structure and Dynamics
Information
Symposium - International Astronomical Union , Volume 203: Recent Insights into the Physics of the Sun and Heliosphere: Highlights from Soho and Other Space Missions , 2001 , pp. 344 - 346
Copyright
Copyright © Astronomical Society of the Pacific 2001 

References

Petschek, H. E. 1964, in Proc. of AAS-NASA Symp. on the Physics of Solar Flares, ed. Hess, W. N., (NASA SP-50), 425.Google Scholar
Shibata, K. 1996, Adv. Space Res., 17, 9.CrossRefGoogle Scholar
Yokoyama, T. & Shibata, K. 1998, ApJ, 494, L113.CrossRefGoogle Scholar
Yokoyama, T., Akita, K., Morimoto, T., Inoue, K. & Nermark, J. 2001, ApJ, 548, in press.Google Scholar