| タイトル | Low-Altitude Reconnection Inflow-Outflow Observations During a 2010 November 3 Solar Eruption |
| 本文（外部サイト） | http://hdl.handle.net/2060/20120010519 |
| 著者（英） | Reeves, Katharine K.; Savage, Sabrina L.a; Holman, Gordon; Su, Yang; Seaton, Daniel B.; McKenzie, David E. |
| 著者所属（英） | NASA Goddard Space Flight Center |
| 発行日 | 2012-01-01 |
| 言語 | eng |
| 内容記述 | For a solar flare occurring on 2010 November 3, we present observations us- ing several SDO/AIA extreme-ultraviolet (EUV) passbands of an erupting flux rope followed by inflows sweeping into a current sheet region. The inflows are soon followed by outflows appearing to originate from near the termination point of the inflowing motion an observation in line with standard magnetic reconnection models. We measure average inflow plane-of-sky speeds to range from approximately 150 - 690 km s-1 with the initial, high-temperature inflows being the fastest. Using the inflow speeds and a range of Alfven speeds, we estimate the Alfvenic Mach number which appears to decrease with time. We also provide inflow and outflow times with respect to RHESSI count rates and find that the fast, high- temperature inflows occur simultaneously with a peak in the RHESSI thermal light curve. Five candidate inflow-outflow pairs are identified with no more than a minute delay between detections. The inflow speeds of these pairs are measured to be approximately 10(exp 2) km s-1 with outflow speeds ranging from approximately 10(exp 2) - 10(exp 33 km s-1 indicating acceleration during the reconnection process. The fastest of these outflows are in the form of apparently traveling density enhancements along the legs of the loops rather than the loop apexes themselves. These flows could possibly either be accelerated plasma, shocks, or waves prompted by reconnection. The measurements presented here show an order of magnitude difference between the retraction speeds of the loops and the speed of the density enhancements within the loops presumably exiting the reconnection site. |
| NASA分類 | Solar Physics |
| レポートNO | GSFC.JA.00408.2012 |
| 権利 | Copyright, Distribution under U.S. Government purpose rights |
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