Fast transients - A search in X-rays for short flares, bursts, and related phenomena

Abstract

view Abstract Citations (20) References (69) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS Fast Transients: A Search in X-Rays for Short Flares, Bursts, and Related Phenomena Connors, A. ; Serlemitsos, P. J. ; Swank, J. H. Abstract The HEAO 1 A-2 database on fast high energy X-ray transients was examined for any discernible regularities. The data were taken over the interval 1977-79 with six collimated multiwire, multilayer, proportional counters that had a sensitivity sufficient for detecting events lasting 1-5 sec at energies as low as 8-120 keV. The entire sky was surveyed completely three times in the observational period. Best-fit position, error box corners, mean transient flux and quiescent flux data are provided for all six of the type 3 events that were found. All the sources were within the Galaxy. The duration of the events ranged from 60-2000 sec. The limited number of events observed leads to estimates of 10,000-200,000 events per year. It is suggested that all the events originate from hard flares occurring at a rate of 20,000/yr on dMe/dKe stars. Publication: The Astrophysical Journal Pub Date: April 1986 DOI: 10.1086/164124 Bibcode: 1986ApJ...303..769C Keywords: Bursts; Stellar Flares; Stellar Radiation; X Ray Sources; Bremsstrahlung; Gamma Ray Bursts; Heao 1; Searching; Stellar Spectra; Transient Response; Astrophysics; STARS: FLARE; X-RAYS: BURSTS full text sources ADS | data products SIMBAD (8)