TY - JOUR
T1 - Multiwavelength study of GRB 201216C using the sub-TeV emission detected by MAGIC
AU - MAGIC Collaboration
AU - Fukami, Satoshi
AU - Berti, Alessio
AU - Loporchio, Serena
AU - Nava, Lara
AU - Suda, Yusuke
AU - Noda, Koji
AU - Asano, Katsuaki
AU - Bošnjak, Željka
AU - Longo, Francesco
AU - Jordana-Mitjans, Nuria
AU - Melandri, Andrea
AU - Mundell, Carole
AU - Shrestha, Manisha
AU - Steele, Iain
AU - Abe, H.
AU - Abe, S.
AU - Abhir, J.
AU - Acciari, V. A.
AU - Agudo, I.
AU - Aniello, T.
AU - Ansoldi, S.
AU - Antonelli, L. A.
AU - Arbet Engels, A.
AU - Arcaro, C.
AU - Artero, M.
AU - Asano, K.
AU - Baack, D.
AU - Babić, A.
AU - Baquero, A.
AU - Barres de Almeida, U.
AU - Barrio, J. A.
AU - Batković, I.
AU - Baxter, J.
AU - Becerra González, J.
AU - Bednarek, W.
AU - Bernardini, E.
AU - Bernardos, M.
AU - Bernete, J.
AU - Berti, A.
AU - Besenrieder, J.
AU - Bigongiari, C.
AU - Biland, A.
AU - Blanch, O.
AU - Bonnoli, G.
AU - Bošnjak,
AU - Burelli, I.
AU - Busetto, G.
AU - Green, D.
AU - Green, J. G.
AU - Hahn, A.
PY - 2024/9/27
Y1 - 2024/9/27
N2 - Recently, several gamma-ray bursts (GRBs) have been detected in the very-high-energy (VHE) gamma-ray energy range by ground-based gamma-ray experiments such as MAGIC, H.E.S.S., and LHASSO. For some GRBs, the VHE emission is consistent with synchrotron self-Compton (SSC) emission from high-energy electrons accelerated in the forward shock of the relativistic jet. However, more statistics are needed to further constrain the emission models. GRB 201216C is a long bright GRB detected in a broad energy range from radio to VHE. The redshift is estimated to be 1.1, making the GRB the most distant source detected in the VHE energy range. MAGIC started the observation 56 seconds after the GRB was triggered by the Swift-BAT telescope. We performed a detailed analysis and detected the signal with about 6 sigma in the first 20 minutes. MAGIC continued the observation for 2.2 hours on the same night and 4 hours on the next night. No signal was detected later than 40 minutes after the GRB trigger. We have performed modelling of the multi-wavelength emission using the MAGIC data. We analysed simultaneous optical data from Liverpool Telescope with MAGIC and included the results in the modelling. The sub-TeV emission is consistent with the single-zone SSC model in the forward shock. In this presentation, we show the final results of the MAGIC data analysis of GRB 201216C and discuss the emission mechanism of the multi-wavelength data.
AB - Recently, several gamma-ray bursts (GRBs) have been detected in the very-high-energy (VHE) gamma-ray energy range by ground-based gamma-ray experiments such as MAGIC, H.E.S.S., and LHASSO. For some GRBs, the VHE emission is consistent with synchrotron self-Compton (SSC) emission from high-energy electrons accelerated in the forward shock of the relativistic jet. However, more statistics are needed to further constrain the emission models. GRB 201216C is a long bright GRB detected in a broad energy range from radio to VHE. The redshift is estimated to be 1.1, making the GRB the most distant source detected in the VHE energy range. MAGIC started the observation 56 seconds after the GRB was triggered by the Swift-BAT telescope. We performed a detailed analysis and detected the signal with about 6 sigma in the first 20 minutes. MAGIC continued the observation for 2.2 hours on the same night and 4 hours on the next night. No signal was detected later than 40 minutes after the GRB trigger. We have performed modelling of the multi-wavelength emission using the MAGIC data. We analysed simultaneous optical data from Liverpool Telescope with MAGIC and included the results in the modelling. The sub-TeV emission is consistent with the single-zone SSC model in the forward shock. In this presentation, we show the final results of the MAGIC data analysis of GRB 201216C and discuss the emission mechanism of the multi-wavelength data.
UR - https://www.scopus.com/pages/publications/85212287975
U2 - 10.22323/1.444.0791
DO - 10.22323/1.444.0791
M3 - Conference article
AN - SCOPUS:85212287975
SN - 1824-8039
VL - 444
JO - Proceedings of Science
JF - Proceedings of Science
M1 - 791
T2 - 38th International Cosmic Ray Conference, ICRC 2023
Y2 - 26 July 2023 through 3 August 2023
ER -