Cross-calibration and combined analysis of the CTA-LST prototype and the MAGIC telescopes

the CTA LST project; MAGIC Collaboration

Cross-calibration and combined analysis of the CTA-LST prototype and the MAGIC telescopes

the CTA LST project
, MAGIC Collaboration

University of Tokyo
Max-Planck-Institut für Physik
INFN Sezione di Torino
INFN
The Barcelona Institute of Science and Technology
Complutense University
Hiroshima University
Research Unit; CIBERNED and Universidad de La Laguna
University of Barcelona
Instituto de Astrofísica de Andalucía-CSIC
ETH Zurich
INFN Sezione di Napoli
Aix-Marseille Université
University of Dortmund
Université Paris-Saclay
LTHE (UMR 5564 CNRS/IRD/Université de Grenoble)
Universität Hamburg
IPARCOS-UCM (Instituto de Física de Partículas y del Cosmos)
University of Lodz
INAF Istituto di Astrofisica Spaziale e Fisica Cosmica, Bologna
c/o DESY
University of Padova
Yerevan Physics Institute
and Physics University of Udine
INFN Sezione di Catania
University of Turin
Istituto di Astrofisica e Planetologia Spaziali (IAPS)
University of Geneva
University of Pisa
Palacky University Olomouc
University of Würzburg
University of Turku
University of Rijeka
Port d'Informació Científica
Faculty of Electrical Engineering, Mechanical Engineering and Naval Architecture, University of Split
Josip Juraj Strossmayer University of Osijek
Kyoto University
Politecnico di Bari
University of Split
Yamagata University
Ruhr-University Bochum
Tohoku University
Sezione di Roma
Astronomical Institute, Academy of Sciences of the Czech Republic v.v.i.
Ibaraki University
Waseda University
Division of Physics and Astronomy
Tokai University
University of Trieste
University of Jaen
Saha Institute of Nuclear Physics
Institute for Nuclear Research and Nuclear Energy Bulgarian Academy of Sciences
Institute of Physics of the Czech Academy of Sciences
University of Palermo
University of Zagreb
Campus UAB
INFN Roma Tor Vergata
Charles University
Nagoya University
Tokushima University
University of Siena
Università Dell'Aquila
Istituto Nazionale di Fisica Nucleare, Sezione di Pisa
Saitama University
Aoyama Gakuin University
Konan University
ICRANet
University of Zagreb, Faculty of Electrical Engineering and Computing
Port d'Informació Científica (PIC)
Centro de Investigaciones Energéticas Medioambientales y Tecnológicas (CIEMAT)
University of São Paulo
National Academy of Sciences of Armenia
Centro Brasileiro de Pesquisas Fisicas
University of Oulu
University of Bologna
Ruđer Bošković Institute
INFN Sezione di Perugia

Résultats de recherche: Contribution à un journal › Article de conférence › Revue par des pairs

Résumé

The Cherenkov Telescope Array (CTA) will be the next generation gamma-ray observatory, which will consist of three kinds of telescopes of different sizes. Among those, the Large Size Telescope (LST) will be the most sensitive in the low energy range starting from 20 GeV. The prototype LST (LST-1) proposed for CTA was inaugurated in October 2018 in the northern hemisphere site, La Palma (Spain), and is currently in its commissioning phase. MAGIC is a system of two gamma-ray Cherenkov telescopes of the current generation, located approximately 100 m away from LST-1, that have been operating in stereoscopic mode since 2009. Since LST-1 and MAGIC can observe the same air shower events, we can compare the brightness of showers, estimated energies of gamma rays, and other parameters event by event, which can be used to cross-calibrate the telescopes. Ultimately, by performing combined analyses of the events triggering the three telescopes, we can reconstruct the shower geometry more accurately, leading to better energy and angular resolutions, and a better discrimination of the background showers initiated by cosmic rays. For that purpose, as part of the commissioning of LST-1, we performed joint observations of established gamma-ray sources with LST-1 and MAGIC. Also, we have developed Monte Carlo simulations for such joint observations and an analysis pipeline which finds event coincidence in the offline analysis based on their timestamps. In this work, we present the first detection of an astronomical source, the Crab Nebula, with combined observation of LST-1 and MAGIC. Moreover, we show results of the inter-telescope cross-calibration obtained using Crab Nebula data taken during joint observations with LST-1 and MAGIC.

langue originale	Anglais
Numéro d'article	724
journal	Proceedings of Science
Volume	395
état	Publié - 18 mars 2022
Modification externe	Oui
Evénement	37th International Cosmic Ray Conference, ICRC 2021 - Virtual, Berlin, Allemagne Durée: 12 juil. 2021 → 23 juil. 2021

Contient cette citation

@article{243f6a5e7763433aaa05a61dfd63cea4,

title = "Cross-calibration and combined analysis of the CTA-LST prototype and the MAGIC telescopes",

abstract = "The Cherenkov Telescope Array (CTA) will be the next generation gamma-ray observatory, which will consist of three kinds of telescopes of different sizes. Among those, the Large Size Telescope (LST) will be the most sensitive in the low energy range starting from 20 GeV. The prototype LST (LST-1) proposed for CTA was inaugurated in October 2018 in the northern hemisphere site, La Palma (Spain), and is currently in its commissioning phase. MAGIC is a system of two gamma-ray Cherenkov telescopes of the current generation, located approximately 100 m away from LST-1, that have been operating in stereoscopic mode since 2009. Since LST-1 and MAGIC can observe the same air shower events, we can compare the brightness of showers, estimated energies of gamma rays, and other parameters event by event, which can be used to cross-calibrate the telescopes. Ultimately, by performing combined analyses of the events triggering the three telescopes, we can reconstruct the shower geometry more accurately, leading to better energy and angular resolutions, and a better discrimination of the background showers initiated by cosmic rays. For that purpose, as part of the commissioning of LST-1, we performed joint observations of established gamma-ray sources with LST-1 and MAGIC. Also, we have developed Monte Carlo simulations for such joint observations and an analysis pipeline which finds event coincidence in the offline analysis based on their timestamps. In this work, we present the first detection of an astronomical source, the Crab Nebula, with combined observation of LST-1 and MAGIC. Moreover, we show results of the inter-telescope cross-calibration obtained using Crab Nebula data taken during joint observations with LST-1 and MAGIC.",

author = "\{the CTA LST project\} and \{MAGIC Collaboration\} and Y. Ohtani and A. Berti and D. Depaoli and \{Di Pierro\}, F. and D. Green and L. Heckmann and M. H{\"u}tten and T. Inada and R. L{\'o}pez-Coto and E. Medina and A. Moralejo and D. Morcuende and G. Pirola and M. Strzys and Y. Suda and I. Vovk and H. Abe and A. Aguasca and I. Agudo and Antonelli, \{L. A.\} and C. Aramo and T. Armstrong and M. Artero and K. Asano and H. Ashkar and P. Aubert and A. Baktash and A. Bamba and \{Baquero Larriva\}, A. and L. Baroncelli and \{Barres de Almeida\}, U. and Barrio, \{J. A.\} and I. Batkovic and \{Becerra Gonz{\'a}lez\}, J. and Bernardos, \{M. I.\} and N. Biederbeck and C. Bigongiari and O. Blanch and G. Bonnoli and P. Bordas and D. Bose and A. Bulgarelli and I. Burelli and M. Buscemi and M. Cardillo and S. Caroff and A. Carosi and F. Cassol and M. Cerruti and Y. Chai",

note = "Publisher Copyright: {\textcopyright} Copyright owned by the author(s) under the terms of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License (CC BY-NC-ND 4.0); 37th International Cosmic Ray Conference, ICRC 2021 ; Conference date: 12-07-2021 Through 23-07-2021",

year = "2022",

month = mar,

day = "18",

language = "English",

volume = "395",

journal = "Proceedings of Science",

issn = "1824-8039",

}

TY - JOUR

T1 - Cross-calibration and combined analysis of the CTA-LST prototype and the MAGIC telescopes

AU - the CTA LST project

AU - MAGIC Collaboration

AU - Ohtani, Y.

AU - Berti, A.

AU - Depaoli, D.

AU - Di Pierro, F.

AU - Green, D.

AU - Heckmann, L.

AU - Hütten, M.

AU - Inada, T.

AU - López-Coto, R.

AU - Medina, E.

AU - Moralejo, A.

AU - Morcuende, D.

AU - Pirola, G.

AU - Strzys, M.

AU - Suda, Y.

AU - Vovk, I.

AU - Abe, H.

AU - Aguasca, A.

AU - Agudo, I.

AU - Antonelli, L. A.

AU - Aramo, C.

AU - Armstrong, T.

AU - Artero, M.

AU - Asano, K.

AU - Ashkar, H.

AU - Aubert, P.

AU - Baktash, A.

AU - Bamba, A.

AU - Baquero Larriva, A.

AU - Baroncelli, L.

AU - Barres de Almeida, U.

AU - Barrio, J. A.

AU - Batkovic, I.

AU - Becerra González, J.

AU - Bernardos, M. I.

AU - Biederbeck, N.

AU - Bigongiari, C.

AU - Blanch, O.

AU - Bonnoli, G.

AU - Bordas, P.

AU - Bose, D.

AU - Bulgarelli, A.

AU - Burelli, I.

AU - Buscemi, M.

AU - Cardillo, M.

AU - Caroff, S.

AU - Carosi, A.

AU - Cassol, F.

AU - Cerruti, M.

AU - Chai, Y.

N1 - Publisher Copyright: © Copyright owned by the author(s) under the terms of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License (CC BY-NC-ND 4.0)

PY - 2022/3/18

Y1 - 2022/3/18

N2 - The Cherenkov Telescope Array (CTA) will be the next generation gamma-ray observatory, which will consist of three kinds of telescopes of different sizes. Among those, the Large Size Telescope (LST) will be the most sensitive in the low energy range starting from 20 GeV. The prototype LST (LST-1) proposed for CTA was inaugurated in October 2018 in the northern hemisphere site, La Palma (Spain), and is currently in its commissioning phase. MAGIC is a system of two gamma-ray Cherenkov telescopes of the current generation, located approximately 100 m away from LST-1, that have been operating in stereoscopic mode since 2009. Since LST-1 and MAGIC can observe the same air shower events, we can compare the brightness of showers, estimated energies of gamma rays, and other parameters event by event, which can be used to cross-calibrate the telescopes. Ultimately, by performing combined analyses of the events triggering the three telescopes, we can reconstruct the shower geometry more accurately, leading to better energy and angular resolutions, and a better discrimination of the background showers initiated by cosmic rays. For that purpose, as part of the commissioning of LST-1, we performed joint observations of established gamma-ray sources with LST-1 and MAGIC. Also, we have developed Monte Carlo simulations for such joint observations and an analysis pipeline which finds event coincidence in the offline analysis based on their timestamps. In this work, we present the first detection of an astronomical source, the Crab Nebula, with combined observation of LST-1 and MAGIC. Moreover, we show results of the inter-telescope cross-calibration obtained using Crab Nebula data taken during joint observations with LST-1 and MAGIC.

AB - The Cherenkov Telescope Array (CTA) will be the next generation gamma-ray observatory, which will consist of three kinds of telescopes of different sizes. Among those, the Large Size Telescope (LST) will be the most sensitive in the low energy range starting from 20 GeV. The prototype LST (LST-1) proposed for CTA was inaugurated in October 2018 in the northern hemisphere site, La Palma (Spain), and is currently in its commissioning phase. MAGIC is a system of two gamma-ray Cherenkov telescopes of the current generation, located approximately 100 m away from LST-1, that have been operating in stereoscopic mode since 2009. Since LST-1 and MAGIC can observe the same air shower events, we can compare the brightness of showers, estimated energies of gamma rays, and other parameters event by event, which can be used to cross-calibrate the telescopes. Ultimately, by performing combined analyses of the events triggering the three telescopes, we can reconstruct the shower geometry more accurately, leading to better energy and angular resolutions, and a better discrimination of the background showers initiated by cosmic rays. For that purpose, as part of the commissioning of LST-1, we performed joint observations of established gamma-ray sources with LST-1 and MAGIC. Also, we have developed Monte Carlo simulations for such joint observations and an analysis pipeline which finds event coincidence in the offline analysis based on their timestamps. In this work, we present the first detection of an astronomical source, the Crab Nebula, with combined observation of LST-1 and MAGIC. Moreover, we show results of the inter-telescope cross-calibration obtained using Crab Nebula data taken during joint observations with LST-1 and MAGIC.

M3 - Conference article

AN - SCOPUS:85145432359

SN - 1824-8039

VL - 395

JO - Proceedings of Science

JF - Proceedings of Science

M1 - 724

T2 - 37th International Cosmic Ray Conference, ICRC 2021

Y2 - 12 July 2021 through 23 July 2021

ER -

Cross-calibration and combined analysis of the CTA-LST prototype and the MAGIC telescopes

Résumé

Empreinte digitale

Contient cette citation