GRB 060218 and the binaries as progenitors of GRB-SN systems
| dc.creator | Dainotti, Maria Giovanna | |
| dc.creator | Bernardini, Maria Grazia | |
| dc.creator | Bianco, Carlo Luciano | |
| dc.creator | Caito, Letizia | |
| dc.creator | Guida, Roberto | |
| dc.creator | Ruffini, Remo | |
| dc.date | 2007-12-04 | |
| dc.date.accessioned | 2026-07-07T11:13:34Z | |
| dc.date.available | 2026-07-07T11:13:34Z | |
| dc.description | (shortened) We study the Gamma-Ray Burst (GRB) 060218: a particularly close source at z=0.033 with an extremely long duration, namely T_{90} ~ 2000 s, related to SN 2006aj. [...] I present the fitting time consuming procedure. In order to show its sensitivity I also present two examples of fits with the same value of B and different value of E_{e^\pm}^{tot}. We fit the X- and γ-ray observations by Swift of GRB 060218 in the 0.1-150 keV energy band during the entire time of observations from 0 all the way to 10^6 s within a unified theoretical model. The free parameters of our theory are only three, namely the total energy E_{e\pm}^{tot} of the e^\pm plasma, its baryon loading B \equiv M_Bc^2/E_{e\pm}^{tot}, as well as the CircumBurst Medium (CBM) distribution. We justify the extremely long duration of this GRB by a total energy E_{e\pm}^{tot} = 2.32\times 10^{50} erg, a very high value of the baryon loading B=1.0\times 10^{-2} and the effective CircumBurst Medium (CBM) density which shows a radial dependence n_{cbm} \propto r^{-α} with 1.0 \leq α\leq 1.7 and monotonically decreases from 1 to $10^{-6}$ particles/cm$^3$. We recall that this value of the $B$ parameter is the highest among the sources we have analyzed and it is very close to its absolute upper limit expected. [...] We also think that the smallest possible black hole, formed by the gravitational collapse of a neutron star in a binary system, is consistent with the especially low energetics of the class of GRBs associated with SNe Ib/c. | |
| dc.description | 6 pages, 3 figures, in the Proceedings of the "4th Italian-Sino Workshop on Relativistic Astrophysics", held in Pescara, Italy, July 20-28, 2007, C.L. Bianco, S.-S. Xue, Editors | |
| dc.identifier | https://arxiv.org/abs/0712.0567 | |
| dc.identifier | http://arxiv.org/abs/0712.0567 | |
| dc.identifier | AIPConf.Proc.966:25-30,2007 | |
| dc.identifier | doi:10.1063/1.2837005 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/191761 | |
| dc.subject | Astrophysics | |
| dc.title | GRB 060218 and the binaries as progenitors of GRB-SN systems | |
| dc.type | text |