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Identification of two classes of gamma-ray bursts
Abstract
We have studied the duration distribution of the gamma-ray bursts of the first BATSE catalog. We find a bimodality in the distribution, which separates GRBs into two classes: short events (less than 2 s) and longer ones (more than 2 s). Both sets are distributed isotropically and inhomogeneously in the sky. We find that their durations are anticorrelated with their spectral hardness ratios: short GRBs are predominantly harder, and longer ones tend to be softer. Our results provide a first GRB classification scheme based on a combination of the GRB temporal and spectral properties.
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Citations
Cited by
An unusual supernova in the error box of the γ-ray burst of 25 April 1998
Galama, T. J., Vreeswijk, P. M., van Paradijs, J., Kouveliotou, C., Augusteijn, T., Böhnhardt, H., Brewer, J. P., Doublier, V., Gonzalez, J.-F., Leibundgut, B., et al. (1998) · Nature · doi:10.1038/27150 · Cited by 1,921
Self-citationThe Supernova–Gamma-Ray Burst Connection
Woosley, S. E., & Bloom, J. S. (2006) · Annual Review of Astronomy and Astrophysics · doi:10.1146/annurev.astro.43.072103.150558 · Cited by 1,766
The X-ray counterpart to the gravitational-wave event GW170817
Troja, E., Piro, L., van Eerten, H., Wollaeger, R. T., Im, M., Fox, O. D., Butler, N. R., Cenko, S. B., Sakamoto, T., Fryer, C. L., et al. (2017) · Nature · doi:10.1038/nature24290 · Cited by 874
A new γ-ray burst classification scheme from GRB 060614
Gehrels, N., Norris, J. P., Barthelmy, S. D., Granot, J., Kaneko, Y., Kouveliotou, C., Markwardt, C. B., Mészáros, P., Nakar, E., Nousek, J. A., et al. (2006) · Nature · doi:10.1038/nature05376 · Cited by 555
Self-citationThe Early X‐Ray Emission from GRBs
O’Brien, P. T., Willingale, R., Osborne, J., Goad, M. R., Page, K. L., Vaughan, S., Rol, E., Beardmore, A., Godet, O., Hurkett, C. P., et al. (2006) · The Astrophysical Journal · doi:10.1086/505457 · Cited by 414
Metadata
- Authors
- Kouveliotou, C., Meegan, C. A., Fishman, G. J., Bhat, N. P., Briggs, M. S., Koshut, T. M., Paciesas, W. S., & Pendleton, G. N.
- Venue
- The Astrophysical Journal
- Publisher
- American Astronomical Society
- Published
- 1993-08
- Volume
- 413
- Pages
- L101
- ISSN
- 0004-637X (ISSN-L)
- 1538-4357
- OpenAlex
- W1975498920
- Cited by
- 2,028
- References
- 0
- FWCI
- 26.37
- Type
- journal article
- Language
- en
- Open access
- closed
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- Kouveliotou, C., Meegan, C. A., Fishman, G. J., Bhat, N. P., Briggs, M. S., Koshut, T. M., Paciesas, W. S., & Pendleton, G. N. (1993). Identification of two classes of gamma-ray bursts. The Astrophysical Journal. https://doi.org/10.1086/186969
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