Abstract
view Abstract Citations (35) References (10) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS The H alpha Spectral Counterparts of Solar Hard X-Rays Microflares Canfield, Richard C. ; Metcalf, Thomas R. Abstract X-ray observations have revealed energetically significant numbers of very small hard X-ray bursts, termed microflares by Lin et al. The authors have simultaneously observed the Hα counterparts of serveral of these microflares. It is found that microflares occur in regions that are also productive of larger flares, suggesting that they may be components of the larger flare event. All but the weakest miroflares show pronounced impulsive-phase red asymmetry in Hα. Their energetics, interpreted using the thick-target nonthermal model of electron transport, implies that these events are substantially underresolved at the authors' spatial resolution and have a true area of 1015- 1016cm-2. Publication: The Astrophysical Journal Pub Date: October 1987 DOI: 10.1086/165654 Bibcode: 1987ApJ...321..586C Keywords: H Alpha Line; Solar Flares; Solar Spectra; Solar X-Rays; Balloon Flight; Electron Energy; Red Shift; Solar Instruments; Time Series Analysis; Solar Physics; SUN: FLARES; SUN: X-RAYS full text sources ADS |
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