Sensitivity of the Cherenkov Telescope Array for probing cosmology and fundamental physics with gamma-ray propagation
Entity
UAM. Departamento de Física TeóricaPublisher
IOP PublishingDate
2021-02-23Citation
10.1088/1475-7516/2021/02/048
Journal of Cosmology and Astroparticle Physics 2021.2 (2021): 048
ISSN
1475-7516 (online)DOI
10.1088/1475-7516/2021/02/048Project
Gobierno de España. AYA2016-79724-C4-1-P; Gobierno de España. AYA2016-80889-P; Gobierno de España. AYA2016-76012-C3-1-P; Gobierno de España. BES-2016-076342; Gobierno de España. FPA2017-82729-C6-1-R; Gobierno de España. FPA2017-82729-C6-2-R; Gobierno de España. FPA2017-82729-C6-3-R; Gobierno de España. FPA2017-82729-C6-4-R; Gobierno de España. FPA2017-82729-C6-5-R; Gobierno de España. FPA2017-82729-C6-6-R; Gobierno de España. PGC2018-095161-B-I00; Gobierno de España. PGC2018-095512-B-I00; Gobierno de España. PID2019-107988GB-C22; Gobierno de España. MDM2015-0509; Gobierno de España. FPA2017-90566-REDC; Gobierno de España. AEI EQC2018-005094-P; info:eu-repo/grantAgreement/EC/H2020/824064/EU//ESCAPE; info:eu-repo/grantAgreement/EC/FP7/262053/EU//CTA-PP; info:eu-repo/grantAgreement/EC/FP7/317446/EU//INFIERI; info:eu-repo/grantAgreement/EC/H2020/676134/EU//CTA-DEV; info:eu-repo/grantAgreement/EC/H2020/843800/EU//GammaRayCascadesEditor's Version
http://doi.org/10.1088/1475-7516/2021/02/048Subjects
Active galactic nuclei; Gamma ray experiments; Axions; Extragalactic magnetic fields; FísicaNote
Artículo escrito por un elevado número de autores, sólo se referencian el nombre del que aparece en primer lugar, el nombre del grupo de colaboración, si lo hubiere y los autores que firman como pertenecientes a la UAMRights
© 2021 IOP Publishing Ltd and Sissa MedialabAbstract
The Cherenkov Telescope Array (CTA), the new-generation ground-based observatory for γ-ray astronomy, provides unique capabilities to address significant open questions in astrophysics, cosmology, and fundamental physics. We study some of the salient areas of γ-ray cosmology that can be explored as part of the Key Science Projects of CTA, through simulated observations of active galactic nuclei (AGN) and of their relativistic jets. Observations of AGN with CTA will enable a measurement of γ-ray absorption on the extragalactic background light with a statistical uncertainty below 15% up to a redshift z = 2 and to constrain or detect γ-ray halos up to intergalactic-magnetic-field strengths of at least 0.3 pG. Extragalactic observations with CTA also show promising potential to probe physics beyond the Standard Model. The best limits on Lorentz invariance violation from γ-ray astronomy will be improved by a factor of at least two to three. CTA will also probe the parameter space in which axion-like particles could constitute a significant fraction, if not all, of dark matter. We conclude on the synergies between CTA and other upcoming facilities that will foster the growth of γ-ray cosmology
Files in this item
Google Scholar:Abdalla, H.
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Aguirre-Santaella, Alejandra
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Ascasibar Sequeiros, Yago
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Gammaldi, Viviana
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Sánchez Conde, Miguel Ángel
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CTA Consortium
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