2024-09-24T22:21:37.000Z http://sot.lmsal.com Mr. Sam Freeland Lockheed Martin Solar and Astrophysics Laboratory (LMSAL) http://www.lmsal.com Lockheed Martin Advanced Tech Center, 3251 Hanover Rd, O/ADBS, B/252, Palo Alto, CA 94304 null null HINODE SOTSP Hosoi Arikawa DeRosa (RCO) 331 HOP331 test (AR12626) Active Region AR, NL AR, NL 12626 5 20170118_235005 459 492 449 5 14 400 2 1 1 2 0 52 2025 198 0.99 -87.997 198.103 62.766 121.728 2017-01-18T23:50:05.000Z 2017-01-19T00:02:43.000Z -87.997 198.103 Flux cancellation and magnetic flux rope formation HOP331, 60"x120" fast map, repeats The aim of this IHOP is to make repeated observations of the likely sites of flux cancellation along the PIL of the target active region as it crosses the solar disk. We request combined IRIS, EIS, and XRT observations. IRIS studies with chromospheric and transition region lines will allow us to determine the locations and possible heights of reconnection occurring as a consequence of flux cancellation. Large FOV EIS observations will provide abundance measurements along the PIL and throughout the active region. XRT observations will be used to investigate the presence of a sigmoid/flux rope.;;The aim of this IHOP is to make repeated observations of the likely sites of flux cancellation along the PIL of the target active region as it crosses the solar disk. We request combined IRIS, EIS, and XRT observations. IRIS studies with chromospheric and transition region lines will allow us to determine the locations and possible heights of reconnection occurring as a consequence of flux cancellation. Large FOV EIS observations will provide abundance measurements along the PIL and throughout the active region. XRT observations will be used to investigate the presence of a sigmoid/flux rope. ivo://sot.lmsal.com/VOEvent#2017-01-18T23:50:00Z