Testing the blast wave model with Swift GRBs
نویسندگان
چکیده
منابع مشابه
The diverse broad-band lightcurves of Swift GRBs reproduced with the cannonball model
Two radiation mechanisms, inverse Compton scattering (ICS) and synchrotron radiation (SR), suffice within the cannonball (CB) model of long gamma ray bursts (LGRBs) and X-ray flashes (XRFs) to provide a very simple and accurate description of their observed prompt emission and afterglows. Simple as they are, the two mechanisms and the burst environment generate the rich structure of the light c...
متن کاملThe Blast Energy Efficiency of GRBs
Using data mostly assembled by previous authors, we consider the linear correlation between the apparent radiative efficiency ǫγ (defined as the ratio of isotropic equivalent radiative output to inferred isotropic equivalent kinetic energy of the blast) and E peak where 1.4 < α < 2, for 17 of 22 GRBs (Lloyd-Ronning and Zhang, 2004). We note in a quantitative manner that this is consistent with ...
متن کاملImproving Swift-XRT positions of GRBs
Since GRBs fade rapidly, it is important to publish accurate, precise positions at early times. For Swift-detected bursts, the best promptly available position is most commonly the X-ray Telescope (XRT) position. We present two processes, developed by the Swift team at Leicester, which are now routinely used to improve the precision and accuracy of the XRT positions reported by the Swift team. ...
متن کاملRest frame light curves of Swift GRBs
— We have computed the luminosity rest frame light curves of the first 40 Gamma-ray bursts (GRBs) detected by Swift with well established redshift. We studied average properties of the light curves in the four subsamples of bursts given by z < 1, 1 < z < 2, 2 < z < ∼ 4, and z > ∼ 4. We conclude that all the last three subsamples share the same morphology and the same luminosity range. Very high...
متن کاملSpectral analysis of Swift long GRBs with known redshift
We study the spectral and energetics properties of 47 long–duration gamma–ray bursts (GRBs) with known redshift, all of them detected by the Swift satellite. Due to the narrow energy range (15–150 keV) of the Swift–BAT detector, the spectral fitting (deconvolution) is reliable only for fitting models with 2 or 3 parameters. As high uncertainty and correlation among the errors is expected, a car...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Advances in Space Research
سال: 2011
ISSN: 0273-1177
DOI: 10.1016/j.asr.2010.08.005