Lorentz invariance violation search with the Cherenkov Telescope Array Observatory Large-Sized Telescope

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985815%3A_____%2F25%3A00646049" target="_blank" >RIV/67985815:_____/25:00646049 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/68378271:_____/25:00646049 RIV/61989592:15310/25:73635274

Výsledek na webu

<a href="https://pos.sissa.it/501/808/pdf" target="_blank" >https://pos.sissa.it/501/808/pdf</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.22323/1.501.0808" target="_blank" >10.22323/1.501.0808</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Lorentz invariance violation search with the Cherenkov Telescope Array Observatory Large-Sized Telescope

Popis výsledku v původním jazyce

The fast variability of very-high energy (VHE) sources such as pulsars, gamma rays bursts (GRBs) or flares of active galactic nuclei (AGN) can be used to detect or constrain Lorentz invariance violation (LIV) by measuring lags in the arrival time of VHE photons. However, an important source of uncertainty arises from processes within the source that may induce intrinsic photon delays. Combining observations of different sources allows us to probe higher energy scales when LIV effects become relevant as well as to distinguish LIV-induced lags from intrinsic effects. We present the results of a standardized analysis performed on all AGN observations carried out by the first Large-Sized Telescope (LST-1) of CTAO. This analysis includes a general search of intra-night variability in archive observing nights that show significant excesses for the target candidates. The observing nights selected for LIV searches are then combined together to extract limits to the characteristic energies at which the LIV effect is expected to be significant. Finally, similar analysis have been performed on relevant data from other major imaging atmospheric Cherenkov telescopes, H.E.S.S., MAGIC and VERITAS, in order to combine all the data sets to extract combined limits that constrain one of the LIV effects.n

Název v anglickém jazyce

Lorentz invariance violation search with the Cherenkov Telescope Array Observatory Large-Sized Telescope

Popis výsledku anglicky

The fast variability of very-high energy (VHE) sources such as pulsars, gamma rays bursts (GRBs) or flares of active galactic nuclei (AGN) can be used to detect or constrain Lorentz invariance violation (LIV) by measuring lags in the arrival time of VHE photons. However, an important source of uncertainty arises from processes within the source that may induce intrinsic photon delays. Combining observations of different sources allows us to probe higher energy scales when LIV effects become relevant as well as to distinguish LIV-induced lags from intrinsic effects. We present the results of a standardized analysis performed on all AGN observations carried out by the first Large-Sized Telescope (LST-1) of CTAO. This analysis includes a general search of intra-night variability in archive observing nights that show significant excesses for the target candidates. The observing nights selected for LIV searches are then combined together to extract limits to the characteristic energies at which the LIV effect is expected to be significant. Finally, similar analysis have been performed on relevant data from other major imaging atmospheric Cherenkov telescopes, H.E.S.S., MAGIC and VERITAS, in order to combine all the data sets to extract combined limits that constrain one of the LIV effects.n

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

10

Strana od-do

808

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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