2001A&A...370..351P


C.D.S. - SIMBAD4 rel 1.7 - 2019.11.14CET06:06:59

2001A&A...370..351P - Astronomy and Astrophysics, volume 370, 351-357 (2001/5-1)

The cepheid-like relationship between variability and luminosity explained within the ``cannonball model'' of gamma-ray bursts.

PLAGA R.

Abstract (from CDS):

I show how an empirical variability - luminosity relationship for prompt gamma-ray bursts, first proposed by Fenimore and Ramirez-Ruiz, can be understood as a special-relativistic beaming effect in the ``cannonball model'' of Dar and De Rujula. In this scenario the variability is a measure of the direction of propagation and the Lorentz factor of the cannonball on which in turn the apparent luminosity of the prompt GRB depends sensitively. The observed absence of cosmological time dilation in the ``aligned peak test'' - when using redshifts derived with this relation - is also explained. The most direct evidence in favour of the cannonball model presented here is its correct description for the observed relation between narrow-spike width and amplitude within a given GRB. There seems to be an indication for cosmological time dilation in the total duration of GRBs, as expected in the cannonball model. Quantitative predictions for the luminosity function of GRBs and the ``spectral-lag luminosity relation'' are given.

Abstract Copyright:

Journal keyword(s): gamma rays: bursts - galaxies: jets

CDS comments: GRB 980524 probable misprint for GRB 980425 and GRB 989793 for GRB 980703.

Simbad objects: 8

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Number of rows : 8

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2020
#notes
1 SN 1987A SN* 05 35 28.020 -69 16 11.07   4.75 4.81     SN.IIPec 4384 2
2 GRB 970508 gB 06 53 49.2 +79 16 19           ~ 835 1
3 GRB 971214 gB 11 56 26.4 +65 12 01           ~ 431 1
4 GRB 990510 gB 13 38 07.64 -80 29 48.8           ~ 461 1
5 GRB 990123 gB 15 25 29 +44 45.0     8.95     ~ 957 1
6 GRB 970828 gB 18 08 31.6 +59 18 51           ~ 333 1
7 Granat 1915+105 LXB 19 15 11.54938 +10 56 44.7585           ~ 2235 0
8 SN 1998bw SN* 19 35 03.17 -52 50 46.1   14.09       SNIc 1616 2

    Equat.    Gal    SGal    Ecl

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2019.11.14-06:06:59

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