scholarly journals New constraints on Lorentz Invariance violation from Crab Nebula spectrum beyond 100 TeV

2019 ◽  
Vol 79 (12) ◽  
Author(s):  
Petr Satunin
Keyword(s):  
Quantum Electrodynamics ◽  
Gamma Ray ◽  
Crab Nebula ◽  
Lorentz Invariance ◽  
Mass Scale ◽  
Photon Decay ◽  
Link Type ◽  
Invariance Violation ◽  
Lorentz Invariance Violation ◽  
Photon Splitting

AbstractRecently two collaborations, Tibet and HAWC, presented new measurements of gamma-ray spectrum from Crab Nebula (Amenomori et al. in Phys Rev Lett 123(5):051101, 2019, arXiv:1906.05521 [astro-ph.HE]; Abeysekara et al. [HAWC Collaboration] in Astrophys. J. 881, 134, (2019), arXiv:1905.12518 [astro-ph.HE]) which continues beyond 100 TeV. We use these data to establish two-sided constraints on parameters of Lorentz Invariance violation in quantum electrodynamics. The limits on Lorentz violating mass scale for quartic dispersion relation are $$4.1\times 10^{14}\, \text{ GeV }$$4.1×1014GeV (photon splitting) and $$1.9\times 10^{13}\, \text{ GeV }$$1.9×1013GeV (photon decay) for superluminal case, and $$1.4\times 10^{12}$$1.4×1012 GeV (suppression of shower formation) for subluminal case.

scholarly journals Photon splitting bound on Lorentz Violation in QED from multi-TeV photon observation.

2018 ◽  
Vol 191 ◽  
pp. 02020
Author(s):  
Konstantin Astapov ◽  
Petr Satunin ◽  
Dmitry Kirpichnikov
Keyword(s):  
Quantum Electrodynamics ◽  
Crab Nebula ◽  
Lorentz Invariance ◽  
Lorentz Violation ◽  
Mass Scale ◽  
Special Model ◽  
Astrophysical Source ◽  
Broken Lorentz Invariance ◽  
Photon Splitting ◽  
The Crab Nebula

We calculate the width of photon splitting to three photons in a special model of quantum electrodynamics with broken Lorentz invariance. This process may lead to a sharp cut-off in a photon spectrum of a given astrophysical source. Analysing experimental data, we set a constraint on Lorentz-violating mass scale from the absence of such cut-off in the Crab Nebula spectrum.

scholarly journals Lorentz Invariance Violation Tests in Astroparticle Physics

Symmetry ◽  
2020 ◽  
Vol 12 (8) ◽  
pp. 1232
Author(s):  
Humberto Martínez-Huerta ◽  
Rodrigo Guedes Lang ◽  
Vitor de Souza
Keyword(s):  
Lorentz Invariance ◽  
Time Lag ◽  
Astroparticle Physics ◽  
Production Threshold ◽  
Air Shower ◽  
Photon Decay ◽  
Invariance Violation ◽  
Lorentz Invariance Violation ◽  
Photon Splitting ◽  
Energy Dependent

In this review, we present the latest exclusion limits obtained from astroparticles on Lorentz Invariance Violation (LIV) in the photon sector. We discuss the techniques known as energy-dependent time delay or time lag, subluminal pair production threshold shift, suppression of air shower formation, superluminal photon decay, and superluminal photon splitting. Perspectives for future results on LIV with the next generation of experiments are also addressed.

scholarly journals Improved limits on Lorentz invariance violation from astrophysical gamma-ray sources

2019 ◽  
Vol 99 (4) ◽  
Author(s):  
Rodrigo Guedes Lang ◽  
Humberto Martínez-Huerta ◽  
Vitor de Souza
Keyword(s):  
Gamma Ray ◽  
Lorentz Invariance ◽  
Invariance Violation ◽  
Lorentz Invariance Violation

scholarly journals Gamma ray burst constraints on ultraviolet Lorentz invariance violation

2006 ◽  
Vol 643 (2) ◽  
pp. 81-85 ◽  
Author(s):  
Tina Kahniashvili ◽  
Grigol Gogoberidze ◽  
Bharat Ratra
Keyword(s):  
Gamma Ray ◽  
Lorentz Invariance ◽  
Gamma Ray Burst ◽  
Invariance Violation ◽  
Lorentz Invariance Violation

scholarly journals Constraints on Hořava–Lifshitz gravity from GRB 170817A

2020 ◽  
Vol 80 (11) ◽  
Author(s):  
Tao Zhang ◽  
Fu-Wen Shu ◽  
Qing-Wen Tang ◽  
Dong-Hui Du
Keyword(s):  
Electromagnetic Waves ◽  
Gamma Ray ◽  
Lorentz Invariance ◽  
Ideal Case ◽  
Remarkable Feature ◽  
Invariance Violation ◽  
Stringent Constraint ◽  
Lorentz Invariance Violation ◽  
Em Field ◽  
Kaluza Klein

AbstractIn this work we focus on a toy model: ($$3+1$$ 3 + 1 )-dimensional Hořava–Lifshitz gravity coupling with an anisotropic electromagnetic (EM) field which is generated through a Kaluza-Klein reduction of a ($$4+1$$ 4 + 1 )-dimensional Hořava–Lifshitz gravity. This model exhibits a remarkable feature that it has the same velocity for both gravitational and electromagnetic waves. This feature makes it possible to restrict the parameters of the theory from GRB 170817A. In this work we use this feature to discuss possible constraints on the parameter $$\beta $$ β in the theory, by analyzing the possible Lorentz invariance violation effect of the GRB 170817A. This is achieved by analyzing potential time delay of gamma-ray photons in this event. It turns out that it places a stringent constraint on this parameter. In the most ideal case, it gives $$|1-\sqrt{\beta }|<(10^{-19}-10^{-18})$$ | 1 - β | < ( 10 - 19 - 10 - 18 ) .

COSMOLOGICAL MEASUREMENTS OF LORENTZ INVARIANCE VIOLATION AT THE LIFŠHITZ POINT

2012 ◽  
Vol 21 (08) ◽  
pp. 1250070 ◽  
Author(s):  
ORLANDO LUONGO ◽  
DAMIANO TOMMASINI
Keyword(s):  
Gamma Ray ◽  
Lorentz Invariance ◽  
A Priori ◽  
Planck Scale ◽  
Chaplygin Gas ◽  
Einstein Equations ◽  
Lifshitz Point ◽  
Invariance Violation ◽  
Lorentz Invariance Violation ◽  
Neutrino Fluxes

We consider the neutrino fluxes and photon lensing from Gamma Ray Bursts and galaxy shocks, in order to predict measurable quantum corrections at late times. In particular, changes of the Einstein shell condition are expected to modify the time delay of neutrinos and photons at the Planck scale. Hence, we study the consequences of the Lorentz invariance violation through the use of such photons and neutrinos. The Lorentz invariance violation is expected to depend on the cosmological model, considered a priori in the Einstein equations; therefore, we focus on the so-called Hořava model which has recently attracted great interest. In addition, we compare our results with the ΛCDM and modified Chaplygin gas models, respectively. We infer several theoretical constraints which could reveal such quantum gravity effects.

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