Mass motions in impulsive flarelike brightenings as observed by OSO 8

Abstract

view Abstract Citations (24) References (9) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS Mass motions in impulsive flarelike brightenings as observed by OSO 8. Bruner, E. C., Jr. ; Lites, B. W. Abstract C IV 1548-A line profiles obtained with the University of Colorado spectrometer aboard OSO 8 reveal transient, redshifted brightenings in the chromosphere-corona transition region above active regions and sunspots. In these events the intensity rises by factors of up to 5 in less than the profile sampling interval of 27 sec. These events indicate that the emitting material is moving downward at velocities of up to 30 km/sec. The increase in line intensity and the amount of motion are consistent with the interpretation of these events as pressure waves propagating down magnetic flux loops. Publication: The Astrophysical Journal Pub Date: February 1979 DOI: 10.1086/156849 Bibcode: 1979ApJ...228..322B Keywords: Chromosphere; Line Shape; Magnetohydrodynamic Flow; Satellite Observation; Solar Flares; Solar Spectra; Oso-8; Solar Activity Effects; Solar Corona; Spectroheliographs; Sunspots; Ultraviolet Spectra; Solar Physics; Solar Transition Region; Sun:UV Spectra full text sources ADS |