Early warning for VHE gamma-ray ﬂares with the ARGO-YBJ detector

Bartoli, B; Bernardini, P; Xj, B; Bleve, C; Bolognino, I; Branchini, P; Budano, A; Calabrese Melcarne, A; Camarri, P; Cao, Z; Cappa, A; Cardarelli, R; Catalanotti, S; Cattaneo, C; Celio, P; Chen, S; Chen, T; Chen, Y; Creti, P; Cui, S; Dai, B; D'Ali'Staiti, G; Danzengluobu,; Dattoli, M; De Mitri, I; D’Ettorre Piazzoli, B; Di Girolamo, T; Ding, X; Di Sciascio, G; Feng, C; Feng, Z; Feng, Z; Galeazzi, F; Galeotti, P; Giroletti, E; Gou, Q; Guo, Y; Hh, H; Hba, H; Hbo, H; Huang, Q; Iacovacci, M; Iuppa, R; James, I; Jia, H; Labaciren,; Hj, L; Jy, L; Xx, L; Liguori, G; Liu, C; Liu, C; Liu, J; Liu, M; Lu, H; Xh, M; Mancarella, G; Mari, S; Marsella, G; Martello, D; Mastroianni, S; Montini, P; Ning, C; Pagliaro, A; Panareo, M; Panico, B; Perrone, L; Pistilli, P; Xb, Q; Rossi, E; Ruggieri, F; Salvini, P; Santonico, R; Shen, P; Sheng, X; Shi, F; Stanescu, C; Surdo, A; Tan, Y; Vallania, P; Vernetto, S; Vigorito, C; Wang, B; Wang, H; Cy, W; Hr, W; B, X; Xue, L; Yan, Y; Yang, Q; Yang, X; Yao, Z; Yuan, A; Zha, M; Zhang, H; Zhang, J; Zhang, J; Zhang, L; Zhang, P; Zhang, X; Zhang, Y; Zhaxiciren, Z; Zhou, X; Zhu, F; Zhu, Q; Zizzi, G

doi:doi:10.1016/j.nima.2011.09.013

Detecting and monitoring emissions from ﬂaring gamma-ray sources in the very-high-energy (VHE, >100 GeV) band is a very important topic in gamma-ray astronomy. The ARGO-YBJ detector is characterized by a high duty cycle and a wide ﬁeld of view. Therefore, it is particularly capable of detecting ﬂares from extragalactic objects. Based on fast reconstruction and analysis, real-time monitoring of 33 selected VHE extragalactic sources is implemented. Flares exceeding a speciﬁc threshold are reported timely, hence enabling the follow-up observation of these objects using more sensitive detectors, such as Cherenkov telescopes.

Bartoli, B., Bernardini, P., Bi, X.J., Bleve, C., Bolognino, I., Branchini, P., et al. (2011). Early warning for VHE gamma-ray ﬂares with the ARGO-YBJ detector. NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH. SECTION A, ACCELERATORS, SPECTROMETERS, DETECTORS AND ASSOCIATED EQUIPMENT, 659(1), 428-433 [doi:10.1016/j.nima.2011.09.013].