Reconnection Outflows and Current Sheet Observed with Hinode/XRT in the 2008 April 9 "Cartwheel CME" Flare

Дата и время публикации : 2010-03-24T21:35:28Z

Авторы публикации и институты :
Sabrina L. Savage
David E. McKenzie
Katharine K. Reeves
Terry G. Forbes
Dana W. Longcope

Ссылка на журнал-издание: Ссылка на журнал-издание не найдена
Коментарии к cтатье: 32 pages, 23 figures, Accepted for publication by the Astrophysical Journal (Oct. 2010)
Первичная категория: astro-ph.SR

Все категории : astro-ph.SR

Краткий обзор статьи: Supra-arcade downflows (SADs) have been observed with Yohkoh/SXT (soft X-rays (SXR)), TRACE (extreme ultra-violet (EUV)), SoHO/LASCO (white light), SoHO/SUMER (EUV spectra), and Hinode/XRT (SXR). Characteristics such as low emissivity and trajectories which slow as they reach the top of the arcade are consistent with post-reconnection magnetic flux tubes retracting from a reconnection site high in the corona until they reach a lower-energy magnetic configuration. Viewed from a perpendicular angle, SADs should appear as shrinking loops rather than downflowing voids. We present XRT observations of supra-arcade downflowing loops (SADLs) following a coronal mass ejection (CME) on 2008 April 9 and show that their speeds and decelerations are consistent with those determined for SADs. We also present evidence for a possible current sheet observed during this flare that extends between the flare arcade and the CME. Additionally, we show a correlation between reconnection outflows observed with XRT and outgoing flows observed with LASCO.

Category: Physics