LST-1 observations of an enormous flare of BL Lacertae in 2021 - Centre de Physique des Particules de Marseille
Communication Dans Un Congrès Année : 2023

LST-1 observations of an enormous flare of BL Lacertae in 2021

Seiya Nozaki
  • Fonction : Auteur
Katsuaki Asano
  • Fonction : Auteur
Juan Escudero
  • Fonction : Auteur
Chaitanya Priyadarshi
  • Fonction : Auteur

Résumé

The first prototype of LST (LST-1) for the Cherenkov Telescope Array has been in commissioning phase since 2018 and already started scientific observations with the low energy threshold around a few tens of GeV. In 2021, LST-1 observed BL Lac following the alerts based on multi-wavelength observations and detected prominent gamma-ray flares. In addition to the daily flux variability, LST-1 also detected sub-hour-scale intra-night variability reaching 3–4 times higher than thegamma-ray flux from the Crab Nebula above 100 GeV. In this proceeding, we will report the analysis results of LST-1 observations of BL Lac in 2021, especially focusing on flux variability.
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hal-04515513 , version 1 (04-09-2024)

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Seiya Nozaki, Katsuaki Asano, Juan Escudero, Gabriel Emery, Chaitanya Priyadarshi. LST-1 observations of an enormous flare of BL Lacertae in 2021. 38th International Cosmic Ray Conference, Jul 2023, Nagoya, Japan. pp.552, ⟨10.22323/1.444.0552⟩. ⟨hal-04515513⟩
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