2019-07-31T21:31:32.000Z 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 SOT Yasuda Yasuda Green (RCO) 0 HOP 269 Prominence PR PR 1 994 -134 111 111 2015-02-15T23:36:30.000Z 2015-02-16T01:19:44.000Z 994 -134 Prominence-Coronal Cavity Systems Ca H 16 s 2kx2k 2x2 1200ms Q90 ROI3 A Prominence-Coronal Cavity system (PCC) is a large-scale structure in the solar corona that consists of a dense, cool prominence surrounded by a low-density, hot coronal cavity. PCCs are likely manifestations of helical magnetic flux ropes located on the quiet Sun away from active regions (ARs). Their significance lies in the fact that eruptions of PCCs constitute ~40% of all coronal mass ejections (CMEs; Gopalswamy 2006). Therefore, understanding the formation, evolution, and eruption of PCCs is critical to probing the underlying physics of CMEs, a fundamental open question in solar physics. ivo://sot.lmsal.com/VOEvent#2015-02-15T23:36:00Z