Constraining Lorentz invariance violation from the continuous spectra of short gamma-ray bursts

Chang, Zhe; Li, Xin; Lin, Hai-Nan; Sang, Yu; Wang, Ping; Wang, Qianqian

doi:10.1088/1674-1137/40/4/045102

Cited by 31 publications

(28 citation statements)

References 49 publications

(64 reference statements)

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“…In this manner, a weak evidence for LIV was found under the assumption that all GRBs had the same intrinsic time delay (Ellis et al 2006). However, due to the fact that the durations of GRBs span about six orders of magnitude, it is not likely that the high energy photons emitted from different GRBs (or from the same GRB) have the same intrinsic time lag as compared with the emission time of the low energy photons (Chang et al 2016). As an improvement, Zhang & Ma (2015) fitted the data of the energetic photons from GRBs on straight lines with the same slope but with different intercepts (i.e., different intrinsic time lags).…”

Section: Introductionmentioning

confidence: 99%

A New Test of Lorentz Invariance Violation: The Spectral Lag Transition of GRB 160625B

Wei

Zhang

Shao

et al. 2017

ApJL

121

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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 multiphoton 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 QG,1 ≥ 0.5 × 10 16 GeV for the linear, and E QG,2 ≥ 1.4 × 10 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.

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Section: Introductionmentioning

confidence: 99%

A New Test of Lorentz Invariance Violation: The Spectral Lag Transition of GRB 160625B

Wei

Zhang

Shao

et al. 2017

ApJL

121

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“…Although many astrophysical sources such as AGNs [6,7], pulsars [8] etc. have been used to search for LIV-induced light speed variation, most of these searches have been done with Gamma-Ray Bursts (GRBs)(See [9][10][11][12][13][14][15][16] and references therein). Results from searches for LIV prior to 2006 or so can be found in the reviews in [3,4].…”

Section: Introductionmentioning

confidence: 99%

Statistical significance of spectral lag transition in GRB 160625B

Ganguly

Desai

2017

Astroparticle Physics

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Recently Wei et al [1] have found evidence for a transition from positive time lags to negative time lags in the spectral lag data of GRB 160625B. They have fit these observed lags to a sum of two components: an assumed functional form for intrinsic time lag due to astrophysical mechanisms and an energy-dependent speed of light due to quadratic and linear Lorentz invariance violation (LIV) models. Here, we examine the statistical significance of the evidence for a transition to negative time lags. Such a transition, even if present in GRB 160625B, cannot be due to an energy dependent speed of light as this would contradict previous limits by some 3-4 orders of magnitude, and must therefore be of intrinsic astrophysical origin. We use three different model comparison techniques: a frequentist test and two information based criteria (AIC and BIC). From the frequentist model comparison test, we find that the evidence for transition in the spectral lag data is favored at 3.05σ and 3.74σ for the linear and quadratic models respectively. We find that ∆AIC and ∆BIC have values 10 for the spectral lag transition that was motivated as being due to quadratic Lorentz invariance violating model pointing to "decisive evidence". We note however that none of the three models (including the model of intrinsic astrophysical emission) provide a good fit to the data.

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“…Astroparticle physics has been proposed as an appropriate test environment for possible Lorentz Invariance Violation (LIV) given the large energy of the particles, the large propagation distances, the accumulation of small interaction effects and recently the precision of the measurements (Liberati & Maccione (2009) ;Stecker & Scully (2005; Amelino-Camelia et al (1998); Jacobson et al (2003); Galaverni & Sigl (2008a,b); Xu & Ma (2016); Chang et al (2016); Ellis & Mavromatos (2013); The MAGIC Collaboration (2008); Ellis et al (2006Ellis et al ( , 2008; Fairbairn et al (2014); Biteau & Williams (2015); Tavecchio & Bonnoli (2016); Rubtsov et al (2017)). …”

Section: Introductionmentioning

confidence: 99%

Limits on the Lorentz Invariance Violation from UHECR Astrophysics

Lang

Martínez-Huerta

Souza

2018

ApJ

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In this paper, Lorentz Invariance Violation (LIV) is introduced in the calculations of photon propagation in the Universe. LIV is considered in the photon sector and the mean free path of the γγ → e + e − interaction is calculated. The corresponding photon horizon including LIV effects is used to predict major changes in the propagation of photons with energy above 10 18 eV. The flux of GZK photons on Earth considering LIV is calculated for several source models of ultra-high energy cosmic ray (UHECR). The predicted flux of GZK gamma-rays is compared to the new upper limits on the photon flux obtained by the Pierre Auger Observatory in order to impose upper limits on the LIV coefficients of order n = 0, 1 and 2. The limits on the LIV coefficients derived here are more realistic than previous works and in some cases more restrictive. The analysis resulted in LIV upper limits in the photon sector of δ limit γ,0

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Constraining Lorentz invariance violation from the continuous spectra of short gamma-ray bursts

Cited by 31 publications

References 49 publications

A New Test of Lorentz Invariance Violation: The Spectral Lag Transition of GRB 160625B

A New Test of Lorentz Invariance Violation: The Spectral Lag Transition of GRB 160625B

Statistical significance of spectral lag transition in GRB 160625B

Limits on the Lorentz Invariance Violation from UHECR Astrophysics

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