GRB 221009A Observations with LST-1 at VHE Gamma Rays

Arnau Aguasca-Cabot, Kazuki Abe, Shotaro Abe, Abhishek,Fabio Acero,Ivan Agudo,Nuria Alvarez Crespo,Lucio Angelo Antonelli,Carla Aramo,Axel Arbet-Engels,Cornelia Arcaro,Katsuaki Asano,Pierre Aubert,Ali Baktash,Aya Bamba,Andres Baquero Larriva,Ulisses Barres de Almeida,Juan Abel Barrio, Luis Barrios Jiménez,Ivana Batković, Joshua Ryo Baxter,Josefa Becerra González, Elisa Bernardini, Juan Bernete Medrano,Alessio Berti,Pooja Bhattacharjee,Ciro Bigongiari,Elisabetta Bissaldi,Oscar Blanch,Giacomo Bonnoli,Pol Bordas, Giulia Brunelli,Andrea Bulgarelli,Irene Burelli,Leonid Burmistrov,Mario Buscemi,Martina Cardillo,Sami Caroff,Alessandro Carosi, Marie-Sophie Carrasco,Franca Cassol, Noelia Castrejon,Diego Cauz, Davide Cerasole,Giovanni Ceribella,Yating Chai, Ks Cheng,Andrea Chiavassa,Michiyuki Chikawa, Gayoung Chon,Ladislav Chytka, Gloria Maria Cicciari, Alejo Cifuentes,Jose Luis Contreras,Juan Cortina,Heide Costantini,Paolo Da Vela,Mykhailo Dalchenko,Francesco Dazzi,Alessandro De Angelis,Mathieu de Bony de Lavergne,Barbara De Lotto,Raniere de Menezes,Luis Del Peral,Carlos Delgado,Jordi Delgado Mengual,Domenico Della Volpe, Michael Dellaiera,Ambra Di Piano, Federico Di Pierro, Riccardo Di Tria,Leonardo Di Venere,Carlos Díaz,Rune Michael Dominik,Dijana Dominis Prester,Alice Donini,Daniela Dorner,Michele Doro,Laura Eisenberger,Dominik Elsässer,Gabriel Emery,Juan Escudero,Vandad Fallah Ramazani,Fabio Ferrarotto,Armand Fiasson,Luca Foffano,Lluis Freixas Coromina,Stefan Fröse,Yasushi Fukazawa,Ramon Garcia López, Claudio Gasbarra,Dario Gasparrini,Felix Geyer, Joao Giesbrecht Paiva,Nicola Giglietto,Francesco Giordano,Pawel Gliwny,Nikola Godinović, Roger Grau,David Green,Jarred Gershon Green,Shuichi Gunji, Patrick Günther,Jonas Hackfeld,Daniela Hadasch,Alexander Hahn,Tarek Hassan,Kohei Hayashi,Lea Heckmann,Matthieu Heller, Javier Herrera Llorente,Kouichi Hirotani,Dirk Hoffmann,Dieter Horns,Julien Houles,Miroslav Hrabovsky,Dario Hrupec,David Hui,Marco Iarlori,Ryo Imazawa,Tomohiro Inada,Yusuke Inome,Kunihito Ioka,Maurizio Iori, Antonio Iuliano,Irene Jiménez Martínez, Juan Jiménez Quiles,Jakub Jurysek,Mika Kagaya,Oleg Kalashev,Vladimir Karas,Hideaki Katagiri,Jun Kataoka,Daniel Kerszberg,Yukiho Kobayashi,Kazunori Kohri,Albert Kong,Hidetoshi Kubo,Junko Kushida, Maria Lainez,Giovanni Lamanna,Alessandra Lamastra, Leo Lemoigne,Maximilian Linhoff,Francesco Longo,Rubén López-Coto,Alicia López-Oramas,Serena Loporchio, Andrea Lorini,Julio Lozano Bahilo,Pedro L. Luque-Escamilla,Pratik Majumdar,Martin MAKARIEV,Manuela Mallamaci,Dusan Mandat,Marina Manganaro,Giulio Manicò,Karl Mannheim,Stefano Marchesi,Mosè Mariotti,Patricia Marquez,Giovanni Marsella,Josep Martí,Oibar Martinez,Gustavo Martínez,Manel Martínez, Alvaro Mas-Aguilar,Gilles Maurin,Daniel Mazin, Enrique Mestre Guillen,Saša Mićanović,Davide Miceli,Tjark Miener,Jose Miguel Miranda,Razmik Mirzoyan,Tsunefumi Mizuno, Miguel Molero Gonzalez,Edgar Molina,Teresa Montaruli, Abelardo Moralejo,Daniel Morcuende,Aldo Morselli, Victor Moya,Hiroshi Muraishi,Shigehiro Nagataki,Takeshi Nakamori,Andrii Neronov,Lukas Nickel,Mireia Nievas Rosillo, Lisa Nikolić,Kyoshi Nishijima,Koji Noda,Dalibor Nosek,Vladimír Novotný,Seiya Nozaki,Michiko Ohishi,Yoshiki Ohtani,Tomohiko Oka,Akira Okumura,Reiko Orito,Jorge Otero-Santos, Pietro Ottanelli,Ellis Owen,Michele Palatiello,David Paneque, Francesca Romana Pantaleo,Riccardo Paoletti,Josep Maria Paredes,Miroslav Pech,Mario Pecimotika,Michele Peresano, Felix Pfeiffle,Ermanno Pietropaolo,Marine Pihet, Giorgio Pirola,Cyann Plard, Franjo Podobnik,Estelle Pons,Elisa Prandini,Chaitanya Priyadarshi,Michael Prouza,Riccardo Rando,Wolgang Rhode,Marc Ribó,Chiara Righi,Vincenzo Rizi,Gonzalo Rodriguez Fernandez,Maria Dolores Rodríguez Frías,Takayuki Saito,Shunsuke Sakurai,David Sanchez,Hidetoshi Sano,Toni Šarić,Yuri Sato,Francesco Gabriele Saturni,Volodymyr Savchenko, Francesco Schiavone,Bernd Schleicher,Felix Schmuckermaier, Jan Lukas Schubert,Fabian Schüssler,Thomas Schweizer, Monica Seglar Arroyo,Thomas Siegert,Rainò Silvia,Julian Sitarek,Vitalii Sliusar,Jelena Strišković, Marcel C. Strzys,Yusuke Suda,Hiroyasu Tajima,Hiromitsu Takahashi,Mitsunari Takahashi,Jumpei Takata,Ryuji Takeishi, P. Thomas Tam,Shuta Tanaka, Dai Tateishi,Thomas Tavernier,Petar Temnikov,Yukikatsu Terada,Kenta Terauchi, Tomislav Terzić,Masahiro Teshima,Martin Tluczykont,Fuyuki Tokanai,Diego F. Torres,Petr Travnicek,Antonio Tutone,Martin Vacula,Piero Vallania,Juliane van Scherpenberg,Monica VAZQUEZ ACOSTA,Gaia Verna,Ilaria Viale, Alessandro Vigliano,Carlo francesco Vigorito, Elisa Visentin,Vincenzo Vitale,Vadym Voitsekhovskyi, Georgios Gerasimos Voutsinas,Ievgen Vovk,Thomas Vuillaume,Roland Walter, Lihong Wan,Martin Will,Tokonatsu Yamamoto,Ryo Yamazaki,Paul Kin Hang Yeung,Tatsuo Yoshida,Takanori Yoshikoshi, Wei Zhang,Natalia Żywucka

Proceedings of High Energy Phenomena in Relativistic Outflows VIII — PoS(HEPROVIII)（2024）

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Abstract

On October 9th, 2022, the brightest gamma-ray burst (GRB) since the first GRB observation in the late sixties was detected by the Fermi-GBM and Swift-BAT telescopes (GRB 221009A).The outstanding characteristics of this GRB triggered extensive follow-up observations of the source across all wavebands, including at very-high-energy (VHE) gamma rays with the Large-Sized Telescope prototype (LST-1) of the upcoming Cherenkov Telescope Array Observatory (CTAO).In this contribution, we present the analysis and results of the LST-1 observation campaign in October 2022, focusing on the data taken under nominal observing conditions and above 200 GeV.

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