Sensitivity of the Cherenkov Telescope Array to TeV photon emission from the Large Magellanic Cloud

descriptionPublicationkeyboard_double_arrow_right Article , Research , Preprint 26 May 2023Embargo end date: 01 Jan 2023 English Publisher:Oxford University Press (OUP)Journal:Monthly Notices of the Royal Astronomical Society, volume 523, pages 5,353-5,387 (issn: 0035-8711, eissn: 1365-2966,

Copyright policy )Funded by:EC | CTA-DEV, AKA | Intrinsic Very High Energ..., EC | INFIERI +9 projects

Authors: Acharyya, A; Adam, R; Aguasca-Cabot, A; Agudo, I; Aguirre-Santaella, A; Alfaro, J; Aloisio, R; +193 Authors

Acharyya, A; Adam, R; Aguasca-Cabot, A; Agudo, I; Aguirre-Santaella, A; Alfaro, J; Aloisio, R; Alves ; Batista, R; Amato, E; Angüner, E O; Aramo, C; Arcaro, C; Asano, K; Aschersleben, J; Ashkar, H; Backes, M; Baktash, A; Balazs, C; Balbo, M; Ballet, J; Bamba, A; Baquero ; Larriva, A; Barbosa ; Martins, V; Barres ; de ; Almeida, U; Barrio, J A; Bastieri, D; Batista, P; Batkovic, I; Baxter, J R; Becerra ; González, J; Becker ; Tjus, J; Benbow, W; Bernardini, E; Bernardos ; Martín, M I; Bernete ; Medrano, J; Berti, A; Bertucci, B; Beshley, V; Bhattacharjee, P; Bhattacharyya, S; Bigongiari, C; Biland, A; Bissaldi, E; Bocchino, F; Bordas, P; Borkowski, J; Bottacini, E; Böttcher, M; Bradascio, F; Brown, A M; Bulgarelli, A; Burmistrov, L; Caroff, S; Carosi, A; Carquín, E; Casanova, S; Cascone, E; Cassol, F; Cerruti, M; Chadwick, P; Chaty, S; Chen, A; Chiavassa, A; Chytka, L; Conforti, V; Cortina, J; Costa, A; Costantini, H; Cotter, G; Crestan, S; Cristofari, P; D'Ammando, F; Dalchenko, M; Dazzi, F; De ; Angelis, A; De ; Caprio, V; de ; Gouveia ; Dal ; Pino, E M; De ; Martino, D; de ; Naurois, M; de ; Souza, V; del ; Valle, M V; Delgado ; Giler, A G; Delgado, C; della ; Volpe, D; Depaoli, D; Girolamo, T; Di ; Piano, A; Di ; Pierro, F; Di ; Tria, R; Di ; Venere, L; Diebold, S; Doro, M; Dumora, D; Dwarkadas, V V; Eckner, C; Egberts, K; Emery, G; Escudero, J; Falceta-Goncalves, D; Fedorova, E; Fegan, S; Feng, Q; Ferenc, D; Ferrand, G; Fiandrini, E; Filipovic, M; Fioretti, V; Foffano, L; Fontaine, G; Fukui, Y; Gaggero, D; Galanti, G; Galaz, G; Gallozzi, S; Gammaldi, V; Garczarczyk, M; Gasbarra, C; Gasparrini, D; Ghalumyan, A; Giarrusso, M; Giavitto, G; Giglietto, N; Giordano, F; Giuliani, A; Glicenstein, J -F; Goldoni, P; Goulart ; Coelho, J; Granot, J; Green, D; Green, J G; Grondin, M -H; Gueta, O; Hadasch, D; Hamal, P; Hassan, T; Hayashi, K; Heller, M; Hernández ; Cadena, S; Hiroshima, N; Hnatyk, B; Hnatyk, R; Hofmann, W; Holder, J; Holler, M; Horan, D; Horvath, P; Hrabovsky, M; Hütten, M; Iarlori, M; Inada, T; Incardona, F; Inoue, S; Iocco, F; Jamrozy, M; Jin, W; Jung-Richardt, I; Juryšek, J; Kantzas, D; Karas, V; Katagiri, H; Kerszberg, D; Knödlseder, J; Komin, N; Kornecki, P; Kosack, K; Kowal, G; Kubo, H; Lamastra, A; Lapington, J; Lemoine-Goumard, M; Lenain, J -P; Leone, F; Leto, G; Leuschner, F;

doi: 10.1093/mnras/stad1576 , 10.48550/arxiv.2305.16707 , 10.3204/pubdb-2023-03711

arXiv: 2305.16707

handle: 10486/712505 , 2445/220276 , 11588/976653 , 11368/3075306 , 11245.1/8c44b971-e881-4a1a-9f04-05c2784bf5aa , 11370/e5002eea-8d66-41fd-aa36-7e880baaa09c , 10281/523775 , 21.11116/0000-000D-BC75-C , 20.500.12556/RUNG-8235-4cf0fc83-7453-005e-93be-30bef7d65216 , 11577/3493021 , 11589/254463 , 11391/1567355 , 11697/212180 , 20.500.11769/570009 , 2318/1930990 , 2440/140226 , 1959.7/uws:74315 , 11586/488240

Sensitivity of the Cherenkov Telescope Array to TeV photon emission from the Large Magellanic Cloud

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Abstract

ABSTRACT A deep survey of the Large Magellanic Cloud at ∼0.1–100 TeV photon energies with the Cherenkov Telescope Array is planned. We assess the detection prospects based on a model for the emission of the galaxy, comprising the four known TeV emitters, mock populations of sources, and interstellar emission on galactic scales. We also assess the detectability of 30 Doradus and SN 1987A, and the constraints that can be derived on the nature of dark matter. The survey will allow for fine spectral studies of N 157B, N 132D, LMC P3, and 30 Doradus C, and half a dozen other sources should be revealed, mainly pulsar-powered objects. The remnant from SN 1987A could be detected if it produces cosmic-ray nuclei with a flat power-law spectrum at high energies, or with a steeper index 2.3–2.4 pending a flux increase by a factor of >3–4 over ∼2015–2035. Large-scale interstellar emission remains mostly out of reach of the survey if its >10 GeV spectrum has a soft photon index ∼2.7, but degree-scale 0.1–10 TeV pion-decay emission could be detected if the cosmic-ray spectrum hardens above >100 GeV. The 30 Doradus star-forming region is detectable if acceleration efficiency is on the order of 1−10 per cent of the mechanical luminosity and diffusion is suppressed by two orders of magnitude within <100 pc. Finally, the survey could probe the canonical velocity-averaged cross-section for self-annihilation of weakly interacting massive particles for cuspy Navarro–Frenk–White profiles.

Related Organizations

University of Oxford
United Kingdom
Max Planck Institute for Physics
Germany
Research Institute in Astrophysics and Planetology
France
PSL Research University
France
University of Palermo
Italy

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Keywords

Cherenkov Telescope Array Observatory, PARTICLE-ACCELERATION, acceleration, efficiency, Cherenkov Telescope Array, acceleration: efficiency, Magellanic Cloud, [SDU.ASTR] Sciences of the Universe [physics]/Astrophysics [astro-ph], GALACTIC PLANE, photon, energy, cosmic radiation, spectrum, Raigs gamma, acceleration of particles; dark matter; gamma-rays: general; Magellanic Clouds;, Magellanic Clouds, cloud, Large Magellanic Cloud, acceleration of particle, NONTHERMAL X-RAYS, acceleration of particles, galaxiesstar-forming regions, High Energy Astrophysical Phenomena (astro-ph.HE), energy: high, photon, emission, [SDU.ASTR]Sciences of the Universe [physics]/Astrophysics [astro-ph], cosmic radiation: spectrum, diffusion, suppression, photon: energy, 520, ENERGY COSMIC-RAYS, gamma ray: emission, energy, high, Dark matter (Astronomy), PULSAR WIND NEBULA, Matèria fosca (Astronomia), info:eu-repo/classification/udc/52, Astrophysics - High Energy Astrophysical Phenomena, info:eu-repo/classification/ddc/520, FERMI-LAT, WIMP, FOS: Physical sciences, acceleration of particles; Magellanic Clouds; dark matter; gamma-rays: general, nucleus: cosmic radiation, 530, dark matter, cosmic rays, Núvols de Magalhães, pulsar wind nebulas, photon: emission, XXXXXX - Unknown, STAR-FORMING GALAXIES, TeV, acceleration of particles; dark matter; gamma-rays: general; Magellanic Clouds, ta115, CTA, Gamma rays, Física, dark matter: annihilation, gamma rays: general, gamma-rays: general, sensitivity, Navarro-Frenk-White profile, acceleration of particles; Magellanic Clouds; dark matter; gamma-rays: general; Astrophysics - High Energy Astrophysical Phenomena, COLD DARK-MATTER, flux, SUPERNOVA REMNANT, spectral, galaxy, very-high energy (VHE) gamma-rays, nucleus, cosmic radiation, GAMMA-RAY EMISSION

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