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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
earth and planetary sciences
Observations of the Crab Nebula and Pulsar with the Large-sized Telescope Prototype of the Cherenkov Telescope Array
Astrophysical Journal, Volume 956, No. 2, Article 80, Year 2023
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Description
The Cherenkov Telescope Array (CTA) is a next-generation ground-based observatory for gamma-ray astronomy at very high energies. The Large-Sized Telescope prototype (LST-1) is located at the CTA-North site, on the Canary Island of La Palma. LSTs are designed to provide optimal performance in the lowest part of the energy range covered by CTA, down to ≃20 GeV. LST-1 started performing astronomical observations in 2019 November, during its commissioning phase, and it has been taking data ever since. We present the first LST-1 observations of the Crab Nebula, the standard candle of very-high-energy gamma-ray astronomy, and use them, together with simulations, to assess the performance of the telescope. LST-1 has reached the expected performance during its commissioning period—only a minor adjustment of the preexisting simulations was needed to match the telescope’s behavior. The energy threshold at trigger level is around 20 GeV, rising to ≃30 GeV after data analysis. Performance parameters depend strongly on energy, and on the strength of the gamma-ray selection cuts in the analysis: angular resolution ranges from 0.°12-0.°40, and energy resolution from 15%-50%. Flux sensitivity is around 1.1% of the Crab Nebula flux above 250 GeV for a 50 hr observation (12% for 30 minutes). The spectral energy distribution (in the 0.03-30 TeV range) and the light curve obtained for the Crab Nebula agree with previous measurements, considering statistical and systematic uncertainties. A clear periodic signal is also detected from the pulsar at the center of the Nebula. © 2023. The Author(s). Published by the American Astronomical Society.
Authors & Co-Authors
Abe, H.
Japan, Tokyo
The University of Tokyo
Aguasca-Cabot, A.
Spain, Barcelona
Instituto de Estudios Espaciales de Cataluña
Agudo, Iván N.
Spain, Madrid
Consejo Superior de Investigaciones Científicas
Álvarez Crespo, Nuria
Spain, Madrid
Universidad Complutense de Madrid
Antonelli, Lucio Angelo
Italy, Rome
Istituto Nazionale Di Astrofisica, Rome
Aramo, Carla
Italy, Naples
Istituto Nazionale Di Fisica Nucleare, Sezione Di Napoli
Arbet-Engels, Axel
Germany, Munich
Max Planck Institute for Physics Werner Heisenberg Institute
Arcaro, Cornelia H.E.
Italy, Padua
Istituto Nazionale Di Fisica Nucleare, Sezione Di Padova
Asano, Katsuaki
Japan, Tokyo
The University of Tokyo
Aubert, Pierre
France, Paris
In2p3 - Institut National de Physique Nucléaire et de Physique Des Particules
Baktash, Ali
Germany, Hamburg
Universität Hamburg
Bamba, Aya
Japan, Tokyo
The University of Tokyo
Larriva, A. Baquero
Spain, Madrid
Universidad Complutense de Madrid
Ecuador, Cuenca
Universidad Del Azuay
Baroncelli, Leonardo
Italy, Bologna
Inaf Istituto Di Astrofisica Spaziale e Fisica Cosmica, Bologna
de Almeida, Ulisses Barres
Brazil, Rio de Janeiro
Centro Brasileiro de Pesquisas Físicas
Barrio, Juan Abel
Spain, Madrid
Universidad Complutense de Madrid
Batković, Ivana
Italy, Padua
Istituto Nazionale Di Fisica Nucleare, Sezione Di Padova
Baxter, J. R.
Japan, Tokyo
The University of Tokyo
González, Josefa Becerra
Spain, San Cristobal de la Laguna
Instituto Astrofisico de Canarias
Bernardos, Maria Isabel
Spain, Madrid
Consejo Superior de Investigaciones Científicas
Medrano, J. Bernete
Spain, Madrid
Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas
Berti, Alessio
Germany, Munich
Max Planck Institute for Physics Werner Heisenberg Institute
Bigongiari, C.
Italy, Rome
Istituto Nazionale Di Astrofisica, Rome
Bissaldi, Elisabetta
Italy, Bari
Politecnico Di Bari
Blanch, Oscar
Spain, Barcelona
Barcelona Institute of Science and Technology Bist
Bonnoli, Giacomo
Italy, Rome
Istituto Nazionale Di Astrofisica, Rome
Bordas, Pol
Spain, Barcelona
Instituto de Estudios Espaciales de Cataluña
Borghese, Alice
Spain, Barcelona
Institució Catalana de Recerca I Estudis Avançats
Bulgarelli, A.
Italy, Bologna
Inaf Istituto Di Astrofisica Spaziale e Fisica Cosmica, Bologna
Buscemi, M.
Italy, Catania
Istituto Nazionale Di Fisica Nucleare, Sezione Di Catania
Cardillo, Martina
Italy, Rome
Istituto Nazionale Di Astrofisica, Rome
Caroff, Sami
France, Paris
In2p3 - Institut National de Physique Nucléaire et de Physique Des Particules
Carosi, Alessandro
Italy, Rome
Istituto Nazionale Di Astrofisica, Rome
Cassol, Franca
France, Marseille
Aix Marseille Université
Cauz, Diego
Italy, Trieste
Istituto Nazionale Di Fisica Nucleare, Sezione Di Trieste
Chai, Yating
Germany, Munich
Max Planck Institute for Physics Werner Heisenberg Institute
Chiavassa, Andrea
Italy, Turin
Istituto Nazionale Di Fisica Nucleare, Sezione Di Torino
Chikawa, Michiyuki
Japan, Tokyo
The University of Tokyo
Chytka, L.
Unknown Affiliation
Contreras, José Luis
Spain, Madrid
Universidad Complutense de Madrid
Cortina, J.
Spain, Madrid
Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas
Costantini, Heide
France, Marseille
Aix Marseille Université
D'Amico, Giacomo
Unknown Affiliation
Dalchenko, Mykhailo
Unknown Affiliation
De Angelis, Alessandro D.
Italy, Padua
Istituto Nazionale Di Fisica Nucleare, Sezione Di Padova
de Bony de Lavergne, Mathieu
France, Paris
In2p3 - Institut National de Physique Nucléaire et de Physique Des Particules
De Lotto, Barbara
Italy, Trieste
Istituto Nazionale Di Fisica Nucleare, Sezione Di Trieste
Delgado, Carlos
Spain, Madrid
Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas
Depaoli, Davide
Italy, Turin
Istituto Nazionale Di Fisica Nucleare, Sezione Di Torino
Di Piano, Ambra
Italy, Bologna
Inaf Istituto Di Astrofisica Spaziale e Fisica Cosmica, Bologna
Di Pierro, F.
Italy, Turin
Istituto Nazionale Di Fisica Nucleare, Sezione Di Torino
Di Tria, R.
Unknown Affiliation
Di Venere, Leonardo
Unknown Affiliation
Díaz, Carlos
Spain, Madrid
Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas
Prester, Dijana Dominis
Unknown Affiliation
Donini, Alice
Spain, Barcelona
Barcelona Institute of Science and Technology Bist
Dorner, Daniela
Unknown Affiliation
Doro, Michele
Italy, Padua
Istituto Nazionale Di Fisica Nucleare, Sezione Di Padova
Emery, Gabriel
Unknown Affiliation
Escudero, Juan
Spain, Madrid
Consejo Superior de Investigaciones Científicas
Fallah Ramazani, Vandad
Unknown Affiliation
Ferrara, Giovanna
Italy, Catania
Istituto Nazionale Di Fisica Nucleare, Sezione Di Catania
Fiasson, Armand
France, Paris
In2p3 - Institut National de Physique Nucléaire et de Physique Des Particules
Fukami, Satoshi
Japan, Tokyo
The University of Tokyo
Fukazawa, Yasushi
Unknown Affiliation
García López, Ramón J.
Spain, San Cristobal de la Laguna
Instituto Astrofisico de Canarias
Gasparrini, Dario
Unknown Affiliation
Giglietto, Nicola
Italy, Bari
Politecnico Di Bari
Giordano, Francesco
Unknown Affiliation
Giro, Enrico
Italy, Padua
Istituto Nazionale Di Fisica Nucleare, Sezione Di Padova
Godinović, Nikola
Unknown Affiliation
Green, David M.
Germany, Munich
Max Planck Institute for Physics Werner Heisenberg Institute
Green, Jarred Gershon
Germany, Munich
Max Planck Institute for Physics Werner Heisenberg Institute
Hadasch, Daniela
Japan, Tokyo
The University of Tokyo
Hahn, A.
Germany, Munich
Max Planck Institute for Physics Werner Heisenberg Institute
Hassan, Tarek
Spain, Madrid
Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas
Hayashi, Kohei
Unknown Affiliation
Horns, Dieter
Germany, Hamburg
Universität Hamburg
Hrupec, Dario
Unknown Affiliation
Hütten, Moritz
Japan, Tokyo
The University of Tokyo
Iarlori, Marco
Unknown Affiliation
Inada, Tomohiro
Japan, Tokyo
The University of Tokyo
Ishio, Kazuma
Unknown Affiliation
Iwamura, Yuki
Japan, Tokyo
The University of Tokyo
Kagaya, Mika
Japan, Tokyo
The University of Tokyo
Karas, Vladimír
Unknown Affiliation
Katagiri, Hideaki
Unknown Affiliation
Kataoka, Jun
Unknown Affiliation
Kerszberg, Daniel
Spain, Barcelona
Barcelona Institute of Science and Technology Bist
Kong, Albert K.H.
Japan, Tokyo
The University of Tokyo
Kubo, Hidetoshi
Japan, Tokyo
The University of Tokyo
Kushida, Junko
Japan, Tokyo
Tokai University
Lamastra, Alessandra
Italy, Rome
Istituto Nazionale Di Astrofisica, Rome
Longo, Francesco
Unknown Affiliation
López-Coto, Rubén
Spain, Madrid
Consejo Superior de Investigaciones Científicas
López-Oramas, Alicia
Spain, San Cristobal de la Laguna
Instituto Astrofisico de Canarias
Loporchio, S.
Unknown Affiliation
Luque-Escamilla, Pedro Luis
Unknown Affiliation
Majumdar, Pratik
Japan, Tokyo
The University of Tokyo
Makariev, M. V.
Unknown Affiliation
Manganaro, Marina
Unknown Affiliation
Mannheim, Karl
Unknown Affiliation
Mariotti, M.
Italy, Padua
Istituto Nazionale Di Fisica Nucleare, Sezione Di Padova
Martí, Josep
Unknown Affiliation
Martínez, Oscar M.
Unknown Affiliation
Maurin, Gilles
France, Paris
In2p3 - Institut National de Physique Nucléaire et de Physique Des Particules
Mazin, Daniel
Japan, Tokyo
The University of Tokyo
Germany, Munich
Max Planck Institute for Physics Werner Heisenberg Institute
Mirzoyan, Razmik G.
Germany, Munich
Max Planck Institute for Physics Werner Heisenberg Institute
Mizuno, Tsunefumi
Unknown Affiliation
Montaruli, Teresa
Unknown Affiliation
Moralejo, Abelardo
Spain, Barcelona
Barcelona Institute of Science and Technology Bist
Morselli, Aldo
Unknown Affiliation
Murase, Kohta
Japan, Tokyo
The University of Tokyo
Nagataki, Shigehiro
Unknown Affiliation
Nakamori, Takeshi
Unknown Affiliation
Nishijima, Kyoshi
Japan, Tokyo
Tokai University
Palatiello, Michele
Italy, Trieste
Istituto Nazionale Di Fisica Nucleare, Sezione Di Trieste
Paneque, David
Germany, Munich
Max Planck Institute for Physics Werner Heisenberg Institute
Paoletti, Riccardo
Unknown Affiliation
Paredes, Josep Maria
Spain, Barcelona
Instituto de Estudios Espaciales de Cataluña
Poireau, Vincent
France, Paris
In2p3 - Institut National de Physique Nucléaire et de Physique Des Particules
Pons, Estelle
France, Paris
In2p3 - Institut National de Physique Nucléaire et de Physique Des Particules
Prandini, Elisa
Italy, Padua
Istituto Nazionale Di Fisica Nucleare, Sezione Di Padova
Prast, Julie
France, Paris
In2p3 - Institut National de Physique Nucléaire et de Physique Des Particules
Principe, Giacomo
Unknown Affiliation
Prouza, Michael
Unknown Affiliation
Rando, Riccardo
Italy, Padua
Istituto Nazionale Di Fisica Nucleare, Sezione Di Padova
Rhode, Wolfgang
Germany, Dortmund
Technische Universität Dortmund
Ribó, Marc
Spain, Barcelona
Instituto de Estudios Espaciales de Cataluña
Rizi, Vincenzo
Unknown Affiliation
Sánchez, David A.
France, Paris
In2p3 - Institut National de Physique Nucléaire et de Physique Des Particules
Saturni, Francesco Gabriele
Italy, Rome
Istituto Nazionale Di Astrofisica, Rome
Schleicher, Bernd
Unknown Affiliation
Schüssler, Fabian
Unknown Affiliation
Schweizer, Thomas
Germany, Munich
Max Planck Institute for Physics Werner Heisenberg Institute
Sitarek, Julian
Unknown Affiliation
Sliusar, Vitalii
Unknown Affiliation
Tajima, Hiro
Unknown Affiliation
Tanaka, Shuta J.
Unknown Affiliation
Terada, Yukikatsu
Unknown Affiliation
Terzić, Tomislav
Unknown Affiliation
Tluczykont, Martin
Germany, Hamburg
Universität Hamburg
Tokanai, Fuyuki
Unknown Affiliation
Torres, Diego F.
Spain, Barcelona
Institució Catalana de Recerca I Estudis Avançats
Tutone, A.
Italy, Rome
Istituto Nazionale Di Astrofisica, Rome
Vallania, Piero
Italy, Turin
Istituto Nazionale Di Fisica Nucleare, Sezione Di Torino
Vigorito, Carlo Francesco
Italy, Turin
Istituto Nazionale Di Fisica Nucleare, Sezione Di Torino
Vitale, V.
Unknown Affiliation
Vovk, Ievgen
Japan, Tokyo
The University of Tokyo
Walter, Roland
Unknown Affiliation
Yamazaki, Ryo
Unknown Affiliation
Z̀ywucka, Natalia
Unknown Affiliation
Bernlöhr, Konrad
Unknown Affiliation
Kosack, Karl
Unknown Affiliation
Maier, Gernot
Unknown Affiliation
Statistics
Citations: 11
Authors: 155
Affiliations: 24
Identifiers
Doi:
10.3847/1538-4357/ace89d
ISSN:
0004637X