LHAASO detects rapid variability of the TeV Gamma-ray Activity of BL Lacertae
ATel #16850; Guangman Xiang (SHAO, IHEP), Min Zha (IHEP), Zhiguo Yao (IHEP), Jianeng Zhou (SHAO) and Yi Xing (SHAO) report on behalf of the LHAASO Collaboration
on 8 Oct 2024; 01:23 UT
Credential Certification: Jianeng Zhou (zjn@shao.ac.cn)
Subjects: Gamma Ray, TeV, UHE, AGN, Blazar, Variables
Utilizing the LHAASO-WCDA real-time alert system, here we report the detection of a TeV gamma-ray flare from AGN BL Lacertae. LHAASO-WCDA observed a gamma-ray flux enhancement from the active galactic nuclei BL Lacertae, commencing at MJD 60588.43. By MJD 60588.77, the accumulated significance reached 7.0 standard deviations, with a flux of approximately 0.5 Crab Unit above 1 TeV. We strongly encourage multi-wavelength observation.
LHAASO is a multi-purpose Extensive Air Shower (EAS) array designed to detect air showers induced by gamma-rays.
