Abstract
view Abstract Citations (23) References (18) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS Repeating Sources of Classical Gamma-Ray Bursts Wang, V. C. ; Lingenfelter, R. E. Abstract From an analysis of the first catalog of the BATSE experiment (Fishman et al. 1993,1994a) on the Compton Gamma Ray Observatory, we find an excessive number of pairs of gamma-ray bursts which are clustered in both space and time. The angular separation between the two bursts in each pair is less than their positional uncertainties, and the interval between their occurrence times is within several days. Optimizing the signal, we find that the probability of observing such a clustered excess from a Poisson ensemble is ~2 x 10^-5^. We suggest that these bursts arise from repeating sources. A detailed study of the most prolific source, GBS 0855-00, is presented in a separate paper (Wang & Lingenfelter 1993a, b). Unlike most of the "soft" gamma-ray repeaters, these repeating bursts have relatively hard spectra, complex light curves, and widely varying durations, that are indistinguishable from classical gamma-ray bursts. Although the significance of the clustered excess was optimized a posteriori, because it depends on temporal and spatial bin sizes that could not be defined a priori, we can use the optimizations from the first catalog to test subsequent BATSE data sets. Unfortunately, the failure of the on-board tape recorders during the second catalog period seriously reduced the number of accurately positioned bursts (Fishman et al. 1994b), so that we can neither confirm, nor refute, the predicted repetition in that sample, and we must await the results of the third catalog. Publication: The Astrophysical Journal Pub Date: March 1995 DOI: 10.1086/175396 Bibcode: 1995ApJ...441..747W Keywords: Gamma Ray Bursts; Repetition; Spatial Resolution; Statistical Correlation; Temporal Distribution; Data Reduction; Poisson Density Functions; Probability Distribution Functions; Astrophysics; GAMMA RAYS: BURSTS; METHODS: STATISTICAL full text sources ADS | data products SIMBAD (20) NED (16) HEASARC (1)
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
