{ "id": "astro-ph/9512074", "version": "v1", "published": "1995-12-12T17:18:25.000Z", "updated": "1995-12-12T17:18:25.000Z", "title": "Two Classes of Gamma-Ray Bursts", "authors": [ "J. I. Katz", "L. M. Canel" ], "comment": "6pp, tex, no figures", "categories": [ "astro-ph" ], "abstract": "Data from the 3B Catalogue suggest that short and long GRB are the results of different classes of events, rather than different parameter values within a single class: Short bursts have harder spectra in the BATSE bands, but chiefly long bursts are detected at photon energies over 1 MeV, implying that their hard photons are radiated by a process not found in short bursts. The values of \\langle V/V_{max} \\rangle for short and long bursts differ by 4.3 \\sigma, implying different spatial distributions. Only the soft gamma-ray radiation mechanisms are the same in both classes.", "revisions": [ { "version": "v1", "updated": "1995-12-12T17:18:25.000Z" } ], "analyses": { "keywords": [ "gamma-ray bursts", "short bursts", "soft gamma-ray radiation mechanisms", "long bursts differ", "batse bands" ], "note": { "typesetting": "TeX", "pages": 6, "language": "en", "license": "arXiv", "status": "editable", "inspire": 403542, "adsabs": "1995astro.ph.12074K" } } }