First Lorentz invariance violation constraint from a cooperation of Imaging Atmospheric Cherenkov Telescopes

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985815%3A_____%2F25%3A00646047" target="_blank" >RIV/67985815:_____/25:00646047 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/68378271:_____/25:00646047 RIV/61989592:15310/25:73635275

Výsledek na webu

<a href="https://pos.sissa.it/501/807/pdf" target="_blank" >https://pos.sissa.it/501/807/pdf</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.22323/1.501.0807" target="_blank" >10.22323/1.501.0807</a>

Jazyk výsledku

angličtina

Název v původním jazyce

First Lorentz invariance violation constraint from a cooperation of Imaging Atmospheric Cherenkov Telescopes

Popis výsledku v původním jazyce

Lorentz invariance violation (LIV) may arise from modifications to the dispersion relation of massless particles in effective models attempting to merge quantum field theories and general relativity. One way to detect or constrain LIV effects is by measuring time delays in the arrival of high-energy photons from astrophysical sources. Suitable targets are variable, distant and highly energetic objects such as pulsars, gamma-ray bursts (GRBs), and active galactic nuclei (AGN) flares. However, a major challenge arises from intrinsic time lags due to source-specific emission processes. To improve the precision of these measurements and distinguish potential LIV-induced delays from intrinsic effects, as well as improve the current exploration of LIV up to a higher energy scale, a collaborative effort has been established among major Imaging Atmospheric Cherenkov Telescopes (IACTs): H.E.S.S., MAGIC, VERITAS, and the first Large-Sized Telescope (LST-1) of CTAO. The so-called Gamma-ray LIV Working Group aims to combine observational data from multiple sources, enhancing the sensitivity and robustness of LIV searches. We present the first set of limits on the LIV energy scale derived from a combination of real data from IACTs experiments.

Název v anglickém jazyce

First Lorentz invariance violation constraint from a cooperation of Imaging Atmospheric Cherenkov Telescopes

Popis výsledku anglicky

Lorentz invariance violation (LIV) may arise from modifications to the dispersion relation of massless particles in effective models attempting to merge quantum field theories and general relativity. One way to detect or constrain LIV effects is by measuring time delays in the arrival of high-energy photons from astrophysical sources. Suitable targets are variable, distant and highly energetic objects such as pulsars, gamma-ray bursts (GRBs), and active galactic nuclei (AGN) flares. However, a major challenge arises from intrinsic time lags due to source-specific emission processes. To improve the precision of these measurements and distinguish potential LIV-induced delays from intrinsic effects, as well as improve the current exploration of LIV up to a higher energy scale, a collaborative effort has been established among major Imaging Atmospheric Cherenkov Telescopes (IACTs): H.E.S.S., MAGIC, VERITAS, and the first Large-Sized Telescope (LST-1) of CTAO. The so-called Gamma-ray LIV Working Group aims to combine observational data from multiple sources, enhancing the sensitivity and robustness of LIV searches. We present the first set of limits on the LIV energy scale derived from a combination of real data from IACTs experiments.

Druh

D - Stať ve sborníku

CEP obor

—

OECD FORD obor

10308 - Astronomy (including astrophysics,space science)

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2025

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

Proceedings of Science

ISBN

—

ISSN

1824-8039

e-ISSN

—

Počet stran výsledku

11

Strana od-do

807

Název nakladatele

Sissa Medilab srl

Místo vydání

Trieste

Místo konání akce

Ženeva

Datum konání akce

15. 7. 2025

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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