TY - JOUR
T1 - CTA sensitivity for probing cosmology and fundamental physics with gamma rays
AU - CTA Consortium Collaboration
AU - Vovk, I.
AU - Biteau, J.
AU - Martinez-Huerta, H.
AU - Meyer, M.
AU - Pita, S.
AU - Abdalla, H.
AU - Abe, H.
AU - Acero, F.
AU - Acharyya, A.
AU - Adam, R.
AU - Agudo, I.
AU - Aguirre-Santaella, A.
AU - Alfaro, R.
AU - Alfaro, J.
AU - Alispach, C.
AU - Aloisio, R.
AU - Batista, R. Alves
AU - Amati, L.
AU - Amato, E.
AU - Ambrosi, G.
AU - Angüner, E. O.
AU - Araudo, A.
AU - Armstrong, T.
AU - Arqueros, F.
AU - Arrabito, L.
AU - Asano, K.
AU - Ascasíbar, Y.
AU - Ashley, M.
AU - Backes, M.
AU - Balazs, C.
AU - Balbo, M.
AU - Balmaverde, B.
AU - Larriva, A. Baquero
AU - Martins, V. Barbosa
AU - Barkov, M.
AU - Baroncelli, L.
AU - de Almeida, U. Barres
AU - Barrio, J. A.
AU - Batista, P. I.
AU - González, J. Becerra
AU - Becherini, Y.
AU - Beck, G.
AU - Tjus, J. Becker
AU - Belmont, R.
AU - Benbow, W.
AU - Bernardini, E.
AU - Berti, A.
AU - Berton, M.
AU - Bertucci, B.
AU - Razzaque, S.
N1 - Publisher Copyright:
© Copyright owned by the author(s) under the terms of the Creative Commons.
PY - 2022/3/18
Y1 - 2022/3/18
N2 - The Cherenkov Telescopic Array (CTA), the next-generation ground-based gamma-ray observatory, will have unprecedented sensitivity, providing answers to open questions in gamma-ray cosmology and fundamental physics. Using simulations of active galactic nuclei observations foreseen in the CTA Key Science Program, we find that CTA will measure gamma-ray absorption on the extragalactic background light with a statistical error below 15% up to the redshift of 2 and detect or establish limits on gamma halos induced by the intergalactic magnetic field of at least 0.3 pG. Extragalactic observations using CTA also demonstrate the potential for testing physics beyond the Standard Model. The best state-of-the-art constraints on the Lorentz invariance violation from astronomical gamma-ray observations will be improved at least two- to threefold. CTA will also probe the parameter space where axion-like particles can represent a significant proportion – if not all – of dark matter. Joint multiwavelength and multimessenger observations, carried out together with other future observatories, will further foster the growth of gamma-ray cosmology.
AB - The Cherenkov Telescopic Array (CTA), the next-generation ground-based gamma-ray observatory, will have unprecedented sensitivity, providing answers to open questions in gamma-ray cosmology and fundamental physics. Using simulations of active galactic nuclei observations foreseen in the CTA Key Science Program, we find that CTA will measure gamma-ray absorption on the extragalactic background light with a statistical error below 15% up to the redshift of 2 and detect or establish limits on gamma halos induced by the intergalactic magnetic field of at least 0.3 pG. Extragalactic observations using CTA also demonstrate the potential for testing physics beyond the Standard Model. The best state-of-the-art constraints on the Lorentz invariance violation from astronomical gamma-ray observations will be improved at least two- to threefold. CTA will also probe the parameter space where axion-like particles can represent a significant proportion – if not all – of dark matter. Joint multiwavelength and multimessenger observations, carried out together with other future observatories, will further foster the growth of gamma-ray cosmology.
UR - https://www.scopus.com/pages/publications/85145441888
M3 - Conference article
AN - SCOPUS:85145441888
SN - 1824-8039
VL - 395
JO - Proceedings of Science
JF - Proceedings of Science
M1 - 894
T2 - 37th International Cosmic Ray Conference, ICRC 2021
Y2 - 12 July 2021 through 23 July 2021
ER -