TY - JOUR
T1 - A New Test of Lorentz Invariance Violation
T2 - The Spectral Lag Transition of GRB 160625B
AU - Wei, Jun Jie
AU - Zhang, Bin Bin
AU - Shao, Lang
AU - Wu, Xue Feng
AU - Mészáros, Peter
N1 - Funding Information:
We thank the anonymous referee for constructive suggestions. This work is supported by the 973 Program of China (2014CB845800), the National Natural Science Foundation of China (grant Nos. 11322328, 11433009, 11673068, 11603076, and 11103083), the Youth Innovation Promotion Association (2011231 and 2017366), the Key Research Program of Frontier Sciences (QYZDB-SSW-SYS005), the Strategic Priority Research Program Multi-waveband gravitational wave Universe (grant No. XDB23000000) of the Chinese Academy of Sciences, the Natural Science Foundation of Jiangsu Province (grant No. BK20161096), and the Guangxi Key Laboratory for Relativistic Astrophysics. B.B.Z. acknowledges support from the Spanish Ministry Projects AYA 2012-39727-C03-01 and AYA2015-71718-R. L.S. acknowledges support from the Joint NSFC-ISF Research Program (No. 11361140349). P.M. acknowledges NASA NNX 13AH50G.
Publisher Copyright:
© 2017. The American Astronomical Society. All rights reserved.
PY - 2017/1/10
Y1 - 2017/1/10
N2 - 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 GeV for the linear, and 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.
AB - 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 GeV for the linear, and 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.
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U2 - 10.3847/2041-8213/834/2/L13
DO - 10.3847/2041-8213/834/2/L13
M3 - Article
AN - SCOPUS:85010059649
SN - 2041-8205
VL - 834
JO - Astrophysical Journal Letters
JF - Astrophysical Journal Letters
IS - 2
M1 - L13
ER -