2026-06-07T15:31:12Zhttps://docta.ucm.es/rest/oai/request

oai:docta.ucm.es:20.500.14352/1350882026-04-27T23:54:47Zcom_20.500.14352_14col_20.500.14352_15

Prospects for a survey of the galactic plane with the Cherenkov Telescope Array Alvarez-Crespo, N. Barrio Uña, Juan Abel Contreras González, José Luis Dinesh, A Domínguez Díaz, Alberto Láinez, M Larriva, A.B. López Moya, Marcos Martinez, O. Mas-Aguilar, A. Miranda, J.M. Miener, Tjark Moralejo Olaizola, Abelardo Morcuende Parrilla, Daniel Nieto Castaño, Daniel Rosado Vélez, Jaime Zamanillo, V.M. 52-33 Gamma ray experiments Gamma ray theory Astrofísica 21 Astronomía y Astrofísica Firman 594 autores. Centro de Excelencia Severo Ochoa (CEX2019-000920-S, CEX2020-001007-S, CEX2021-001131-S) Unidad de Excelencia María de Maeztu (RYC2021-032552-I, RYC2021-032991-I, RYC2020-028639-I, RYC-2017-22665) Juan de la Cierva-Incorporación (IJC2018-037195-I, IJC2019-040315-I) Atracción de Talento (2019-T2/TIC-12900) Tecnologías avanzadas para la exploración del universo y sus componentes (PR47/21 TAU) Postdoctoral Junior Leader (LCF/BQ/PI21/11830030) “Programa Operativo de Crecimiento Inteligente” FEDER 2014-2020 (ESFRI-2017-IAC-12) Approximately one hundred sources of very-high-energy (VHE) gamma rays are known in the Milky Way, detected with a combination of targeted observations and surveys. A survey of the entire Galactic Plane in the energy range from a few tens of GeV to a few hundred TeV has been proposed as a Key Science Project for the upcoming Cherenkov Telescope Array Observatory (CTAO). This article presents the status of the studies towards the Galactic Plane Survey (GPS). We build and make publicly available a sky model that combines data from recent observations of known gamma-ray emitters with state-of-the-art physically-driven models of synthetic populations of the three main classes of established Galactic VHE sources (pulsar wind nebulae, young and interacting supernova remnants, and compact binary systems), as well as of interstellar emission from cosmic-ray interactions in the Milky Way. We also perform an optimisation of the observation strategy (pointing pattern and scheduling) based on recent estimations of the instrument performance. We use the improved sky model and observation strategy to simulate GPS data corresponding to a total observation time of 1620 hours spread over ten years. Data are then analysed using the methods and software tools under development for real data. Under our model assumptions and for the realisation considered, we show that the GPS has the potential to increase the number of known Galactic VHE emitters by almost a factor of five. This corresponds to the detection of more than two hundred pulsar wind nebulae and a few tens of supernova remnants at average integral fluxes one order of magnitude lower than in the existing sample above 1 TeV, therefore opening the possibility to perform unprecedented population studies. The GPS also has the potential to provide new VHE detections of binary systems and pulsars, to confirm the existence of a hypothetical population of gamma-ray pulsars with an additional TeV emission component, and to detect bright sources capable of accelerating particles to PeV energies (PeVatrons). Furthermore, the GPS will constitute a pathfinder for deeper follow-up observations of these source classes. Finally, we show that we can extract from GPS data an estimate of the contribution to diffuse emission from unresolved sources, and that there are good prospects of detecting interstellar emission and statistically distinguishing different scenarios. Thus, a survey of the entire Galactic plane carried out from both hemispheres with CTAO will ensure a transformational advance in our knowledge of Galactic VHE source populations and interstellar emission. State committee of science (Armenia) Australian Research Council Astronomy Australia Limited The University of Adelaide Australian National University Monash University The University of New South Wales The University of Sydney Western Sydney University Federal Ministry of Education, Science and Research (Austria) Innsbruck University Conselho Nacional de Desenvolvimento Científico e Tecnológico (Brasil) Fundação Carlos Chagas Filho de Amparo à Pesquisa do Estado do Rio de Janeiro Fundação de Amparo à Pesquisa do Estado de São Paulo Fundação de Apoio à Ciência, Tecnologia e Inovação do Paraná — Fundação Araucária Ministerio de Tecnologías de la Información y Comunicación (Brasil) Ministry of Education and Science (Bulgaria) The Natural Sciences and Engineering Research Council of Canada Canadian Space Agency Comisión Nacional de Investigación Científica y Tecnológica (Chile) Fondo Nacional de Desarrollo Científico y Tecnológico (Chile) Agencia Nacional de Investigación y Desarrollo (Chile) Croatian Science Foundation Rudjer Boskovic Institute University of Osijek University of Rijeka University of Split University of Zagreb Ministry of Education, Youth and Sports (Czech Republic) Academy of Finland Ministry of Higher Education and Research (France) Centre National de la Recherche Scientifique (France) Institut de recherche sur les lois fondamentales de l'Univers Agence Nationale de la Recherche (France) Regional Council Ile de France Federal Ministry of Education and Research (Germany) Max Planck Society German Research Foundation Helmholtz Association Department of Atomic Energy (India) Department of Science and Technology (India) Istituto Nazionale di Astrofisica Istituto Nazionale di Fisica Nucleare Ministero dell'Istruzione, dell'Università e della Ricerca University of Tokyo Japan Society for the Promotion of Science Ministry of Education, Culture, Sports, Science and Technology (Japan) Netherlands Research School for Astronomy Netherlands Organization for Scientific Research University of Oslo Ministry of Science and Higher Education (Poland) National Centre for Research and Development (Poland) National Science Centre (Poland) Slovenian Research Agency South African Department of Science and Technology Ministerio de Ciencia e Innovación (España) Gobierno de España Comunidad de Madrid European Commission Banco La Caix Junta de Andalucía Universidad de Jaén Universidad Complutense de Madrid Gobierno de Canarias Generalitat de Catalunya Swedish Research Council Royal Physiographic Society of Lund Royal Swedish Academy of Sciences Lunarc State Secretariat for Education, Research and Innovation (Switzerland) Swiss National Science Foundation Durham University Leverhulme Trust Liverpool University University of Leicester University of Oxford Royal Society, Science and Technology Facilities Council (UK) National Science Foundation (US) Argonne National Laboratory Barnard College University of California University of Chicago Columbia University Georgia Institute of Technology Institute for Nuclear and Particle Astrophysics Iowa State University Smithsonian Institution Washington University McDonnell Center for the Space Sciences The University of Wisconsin Wisconsin Alumni Research Foundation Depto. de Estructura de la Materia, Física Térmica y Electrónica Fac. de Ciencias Físicas Instituto de Física de Partículas y del Cosmos (IPARCOS) TRUE pub 2026-04-27T08:16:00Z 2026-04-27T08:16:00Z 2024-10-01 journal article VoR https://hdl.handle.net/20.500.14352/135088 XXXX-XXXX 10.1088/1475-7516/2024/10/081 1475-7516 eng info:eu-repo/grantAgreement/MES/National RI Roadmap/DO1-153-28.08.2018/BG/National Research Infrastructure Roadmap/National RI Roadmap info:eu-repo/grantAgreement/ANID/PIA-CATA/AFB170002/CL/Centro de Astrofísica y Tecnologías Afines/CATA nfo:eu-repo/grantAgreement/ANID/PIA-APOYO/AFB180002/CL/Apoyo a Centros Científicos y Tecnológicos de Excelencia con Financiamiento Basal/AFB180002 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RAYOS GAMMA CON MAGIC Y CTA-NORTE, PROYECTO 2 - CONTRIBUCION DEL IFAE/ info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/PID2019-107847RB-C43/ES/ASTRONOMIA DE RAYOS GAMMA CON MAGIC Y CTA-NORTE, PROYECTO 2, CONTRIBUCIONES DE UCM-ELEC/ info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/PID2019-107847RB-C42/ES/ASTRONOMIA DE RAYOS GAMMA CON MAGIC Y CTA-NORTE, PROYECTO 2 - CONTRIBUCION DE UAB&CERES-IEEC/ info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/PID2019-107988GB-C22/ES/PARTICIPACION DEL IAC EN EL EXPERIMENTO AMS/ info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2021-2023/PID2021-124581OB-I00/ES/INVESTIGACION FUNDAMENTAL E INNOVACION TECNOLOGICA PARA AVANZAR LA CIENCIA DE PULSARES/ info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2021-2023/PID2021-125331NB-I00/ES/PARTICULAS, ASTROPARTICULAS Y MATERIA OSCURA EN EL UNIVERSO/ info:eu-repo/grantAgreement/JUNTA-ANDALUCIA/PAIDI/P18-FR-1580/ES/Plan Andaluz de Investigación, Desarrollo e Innovación/P18-FR-1580 info:eu-repo/grantAgreement/AGAUR/SGR/2021SGR00426/ES/Grups de Recerca de Catalunya/2021SGR00426 info:eu-repo/grantAgreement/EC/H2020/824064/EU info:eu-repo/grantAgreement/NSF/AST/1911061/US/Collaborative Research: Advanced Gamma-ray Astronomy with the Cherenkov Telescope Array/AST-1911061 info:eu-repo/grantAgreement/EC/FP7/262053/EU info:eu-repo/grantAgreement/EC/FP7/317446/EU info:eu-repo/grantAgreement/EC/H2020/676134/EU Abe, S., et al. «Prospects for a survey of the galactic plane with the Cherenkov Telescope Array». Journal of Cosmology and Astroparticle Physics, vol. 2024, n.o 10, octubre de 2024, p. 081. DOI.org (Crossref), https://doi.org/10.1088/1475-7516/2024/10/081. Attribution 4.0 International http://creativecommons.org/licenses/by/4.0/ open access application/pdf