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A New Test of Lorentz Invariance Violation: the Spectral Lag Transition of GRB 160625B
- Publication Year :
- 2016
-
Abstract
- Possible violations of Lorentz invariance (LIV) have been investigated for a long time using the observed spectral lags of gamma-ray bursts (GRBs). However, these generally have relied on using a single photon in the highest energy range. Furthermore, the search for LIV lags has been hindered by our ignorance concerning the intrinsic time lag in different energy bands. GRB 160625B, the only burst so far with a well-defined transition from $positive$ lags to $negative$ lags provides a unique opportunity to put new constraints on LIV. Using multi-photon energy bands we consider the contributions to the observed spectral lag from both the intrinsic time lag and the lag by LIV effects, and assuming the intrinsic time lag to have a positive dependence on the photon energy, we obtain robust limits on LIV by directly fitting the spectral lag data of GRB 160625B. Here we show that these robust limits on the quantum gravity energy scales are $E_{\rm QG,1}\geq0.5\times10^{16}$ GeV for the linear, and $E_{\rm QG,2}\geq1.4\times10^{7}$ GeV for the quadratic LIV effects, respectively. In addition, we give for the first time a reasonable formulation of the intrinsic energy-dependent time lag.<br />6 pages, 4 figures, 1 table. Accepted for publication in ApJ Letters
- Subjects :
- High Energy Physics - Theory
Photon
Lag
Astrophysics::High Energy Astrophysical Phenomena
FOS: Physical sciences
General Relativity and Quantum Cosmology (gr-qc)
Astrophysics
Photon energy
Lorentz covariance
01 natural sciences
General Relativity and Quantum Cosmology
High Energy Physics - Phenomenology (hep-ph)
0103 physical sciences
010303 astronomy & astrophysics
High Energy Astrophysical Phenomena (astro-ph.HE)
Physics
Range (particle radiation)
010308 nuclear & particles physics
Astronomy and Astrophysics
High Energy Physics - Phenomenology
High Energy Physics - Theory (hep-th)
Space and Planetary Science
Quantum gravity
Gamma-ray burst
Astrophysics - High Energy Astrophysical Phenomena
Energy (signal processing)
Subjects
Details
- Language :
- English
- Database :
- OpenAIRE
- Accession number :
- edsair.doi.dedup.....f9d648f08d45fd3bb910b99fb4a8fa91