The issue of the possible presence or absence of jets in GRBs is here re-examined for GRB991216. We compare and contrast our theoretically predicted afterglow luminosity in the 2-10 keV band for spherically symmetric versus jetted emission. At these wavelengths the jetted emission can be excluded and data analysis confirms spherical symmetry. These theoretical fits are expected to be improved by the forthcoming data of the Swift mission. © 2005 COSPAR.
Evidence for isotropic emission in GRB991216 / Ruffini, Remo; Bernardini, MARIA GRAZIA; Bianco, Carlo Luciano; P., Chardonnet; F., Fraschetti; Shesheng, Xue. - In: ADVANCES IN SPACE RESEARCH. - ISSN 0273-1177. - 38:7(2006), pp. 1291-1294. [10.1016/j.asr.2005.05.088]
Evidence for isotropic emission in GRB991216
RUFFINI, Remo;BERNARDINI, MARIA GRAZIA;BIANCO, Carlo Luciano;
2006
Abstract
The issue of the possible presence or absence of jets in GRBs is here re-examined for GRB991216. We compare and contrast our theoretically predicted afterglow luminosity in the 2-10 keV band for spherically symmetric versus jetted emission. At these wavelengths the jetted emission can be excluded and data analysis confirms spherical symmetry. These theoretical fits are expected to be improved by the forthcoming data of the Swift mission. © 2005 COSPAR.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
