2003A&A...402..409E


C.D.S. - SIMBAD4 rel 1.7 - 2021.03.03CET04:29:18

2003A&A...402..409E - Astronomy and Astrophysics, volume 402, 409-424 (2003/5-1)

Quantum-gravity analysis of gamma-ray bursts using wavelets.

ELLIS J., MAVROMATOS N.E., NANOPOULOS D.V. and SAKHAROV A.S.

Abstract (from CDS):

In some models of quantum gravity, space-time is thought to have a foamy structure with non-trivial optical properties. We probe the possibility that photons propagating in vacuum may exhibit a non-trivial refractive index, by analyzing the times of flight of radiation from gamma-ray bursters (GRBs) with known redshifts. We use a wavelet shrinkage procedure for noise removal and a wavelet ``zoom'' technique to define with high accuracy the timings of sharp transitions in GRB light curves, thereby optimizing the sensitivity of experimental probes of any energy dependence of the velocity of light. We apply these wavelet techniques to 64 ms and TTE data from BATSE, and also to OSSE data. A search for time lags between sharp transients in GRB light curves in different energy bands yields the lower limit M≥6.9x1015GeV on the quantum-gravity scale in any model with a linear dependence of the velocity of light ∝ E/M. We also present a limit on any quadratic dependence.

Abstract Copyright:

Journal keyword(s): distance scale - gamma ray: bursts - methods: statistical

CDS comments: GRB 980123 is a misprint for GRB 990123.

Simbad objects: 9

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Number of rows : 9

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2021
#notes
1 GRB 991216 gB 05 09 31.2983 +11 17 07.262           ~ 411 0
2 GRB 970508 gB 06 53 49.2 +79 16 19           ~ 845 1
3 GRB 980329 gB 07 02 41 +38 50.7           ~ 264 1
4 GRB 971214 gB 11 56 26.4 +65 12 01           ~ 434 1
5 GRB 990308 gB 12 23 11.44 +06 44 05.1           ~ 44 1
6 GRB 990510 gB 13 38 07.64 -80 29 48.8           ~ 468 1
7 GRB 990123 gB 15 25 29 +44 45.0     8.95     ~ 966 1
8 SN 1998bw SN* 19 35 03.17 -52 50 46.1   14.09       SNIc 1673 2
9 GRB 980703 gB 23 59 06.7 +08 35 07           ~ 424 1

    Equat.    Gal    SGal    Ecl

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2021.03.03-04:29:18

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