Profiles of the H and K lines of CaII in disk flares |
| |
Authors: | J Mckim Malville Einar Tandberg-Hanssen Dino Zei |
| |
Institution: | (1) High Altitude Observatory National Center for Atmospheric Research, Boulder, Colo., U.S.A. |
| |
Abstract: | The profiles of the resonance lines of Caii have been studied in two large disk flares and in the surrounding plage. In the brightest portions of the flares no self-reversal in the central emission core was detected; self-reversed cores were present in the less bright portions of the flares. We find that as the intensity of the emission core increases the separation of the H2 and K2 peaks decreases monotonically, becoming unobservable at intensities near to 0.90 the local continuum. Possible reasons for the behavior of the H and K lines in flares are considered. It is suggested that the largest density enhancements in flares are found near the strongest magnetic field. |
| |
Keywords: | |
本文献已被 SpringerLink 等数据库收录! |