scholarly journals Gamma-Ray Bursts as Probes for Quantum Gravity

2005 ◽  
pp. 351-362 ◽  
Author(s):  
T. Piran
Keyword(s):  
Quantum Gravity ◽  
Gamma Ray ◽  
Gamma Ray Bursts

scholarly journals Limits on quantum gravity effects from Swift short gamma-ray bursts

2017 ◽  
Vol 607 ◽  
pp. A121 ◽  
Author(s):  
M. G. Bernardini ◽  
G. Ghirlanda ◽  
S. Campana ◽  
P. D’Avanzo ◽  
J.-L. Atteia ◽  
...  
Keyword(s):  
Quantum Gravity ◽  
Gamma Ray ◽  
Lorentz Invariance ◽  
Spectral Energy Distribution ◽  
Gamma Ray Bursts ◽  
Low Energy ◽  
Energy Separation ◽  
Spectral Energy ◽  
Spectral Evolution ◽  
Short Grbs

The delay in arrival times between high and low energy photons from cosmic sources can be used to test the violation of the Lorentz invariance (LIV), predicted by some quantum gravity theories, and to constrain its characteristic energy scale EQG that is of the order of the Planck energy. Gamma-ray bursts (GRBs) and blazars are ideal for this purpose thanks to their broad spectral energy distribution and cosmological distances: at first order approximation, the constraints on EQG are proportional to the photon energy separation and the distance of the source. However, the LIV tiny contribution to the total time delay can be dominated by intrinsic delays related to the physics of the sources: long GRBs typically show a delay between high and low energy photons related to their spectral evolution (spectral lag). Short GRBs have null intrinsic spectral lags and are therefore an ideal tool to measure any LIV effect. We considered a sample of 15 short GRBs with known redshift observed by Swift and we estimate a limit on EQG ≳ 1.5 × 1016 GeV. Our estimate represents an improvement with respect to the limit obtained with a larger (double) sample of long GRBs and is more robust than the estimates on single events because it accounts for the intrinsic delay in a statistical sense.

scholarly journals An Algorithm for Detecting Quantum Gravity Photon Dispersion in Gamma‐Ray Bursts: DisCan

2008 ◽  
Vol 673 (2) ◽  
pp. 972-980 ◽  
Author(s):  
Jeffrey D. Scargle ◽  
Jay P. Norris ◽  
J. T. Bonnell
Keyword(s):  
Quantum Gravity ◽  
Gamma Ray ◽  
Gamma Ray Bursts

scholarly journals Quantum-gravity analysis of gamma-ray bursts using wavelets

2003 ◽  
Vol 402 (2) ◽  
pp. 409-424 ◽  
Author(s):  
J. Ellis ◽  
N. E. Mavromatos ◽  
D. V. Nanopoulos ◽  
A. S. Sakharov
Keyword(s):  
Quantum Gravity ◽  
Gamma Ray ◽  
Gamma Ray Bursts

scholarly journals Constraints on quantum gravity and the photon mass from gamma ray bursts

2021 ◽  
Vol 104 (10) ◽  
Author(s):  
D. J. Bartlett ◽  
H. Desmond ◽  
P. G. Ferreira ◽  
J. Jasche
Keyword(s):  
Quantum Gravity ◽  
Gamma Ray ◽  
Gamma Ray Bursts ◽  
Photon Mass
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