RECONNECTION OUTFLOWS AND CURRENT SHEET OBSERVED WITH HINODE/XRT IN THE 2008 APRIL 9 'CARTWHEEL CME' FLARE

Journal Article · Sun Oct 10 00:00:00 EDT 2010 · Astrophysical Journal

DOI:https://doi.org/10.1088/0004-637X/722/1/329· OSTI ID:21464703

Savage, Sabrina L; McKenzie, David E; Longcope, Dana W ^[1]; Reeves, Katharine K ^[2]; Forbes, Terry G ^[3]

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1. Department of Physics, Montana State University, P.O. Box 173840, Bozeman, MT 59717-3840 (United States)
2. Harvard-Smithsonian Center for Astrophysics, 60 Garden Street MS 58, Cambridge, MA 02138 (United States)
3. Institute for the Study of Earth, Oceans, and Space (EOS), University of New Hampshire, 39 College Road, Durham, NH 03824 (United States)

Supra-arcade downflows (SADs) have been observed with Yohkoh/SXT (soft X-rays (SXR)), TRACE (extreme ultraviolet (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 X-ray Telescope (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.

• OSTI ID: 21464703
• Journal Information: Astrophysical Journal, Vol. 722, Issue 1; Other Information: DOI: 10.1088/0004-637X/722/1/329; ISSN 0004-637X
• Country of Publication: United States
• Language: English

Related Subjects

79 ASTROPHYSICS
COSMOLOGY AND ASTRONOMY
EMISSIVITY
EXTREME ULTRAVIOLET RADIATION
GAMMA RADIATION
MAGNETIC FLUX
MAGNETIC RECONNECTION
SOFT X RADIATION
SOLAR CORONA
SOLAR FLARES
SUN
TELESCOPES
ATMOSPHERES
ELECTROMAGNETIC RADIATION
IONIZING RADIATIONS
MAIN SEQUENCE STARS
OPTICAL PROPERTIES
PHYSICAL PROPERTIES
RADIATIONS
SOLAR ACTIVITY
SOLAR ATMOSPHERE
STARS
STELLAR ACTIVITY
STELLAR ATMOSPHERES
STELLAR CORONAE
STELLAR FLARES
SURFACE PROPERTIES
ULTRAVIOLET RADIATION
X RADIATION