Testing cosmology and fundamental physics with the Cherenkov Telescope Array

Martínez-Huerta, H.; Biteau, J.; Lefaucheur, J.; Meyer, Manuel; Pita, S.; Vovk, Ievgen

doi:10.22323/1.358.0739

Cited by 3 publications

(3 citation statements)

References 17 publications

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“…[181][182][183] present prospects for searches for time delays using γ-ray light-curves of GRBs, blazars and pulsars. References [184,185] alternatively explored the pair-production channel, relying solely on spectral observations of blazars. In the present work, we consider more extensively the CTA potential to test LIV-induced modifications of the pair-production threshold in γ-ray interactions with the EBL.…”

Section: Probing Lorentz Invariance Up To the Planck Scalementioning

confidence: 99%

Sensitivity of the Cherenkov Telescope Array for probing cosmology and fundamental physics with gamma-ray propagation

Martínez¹,

Larriva²,

Barrio³

et al. 2021

J. Cosmol. Astropart. Phys.

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The Cherenkov Telescope Array (CTA), the new-generation ground-based observatory for γ astronomy, provides unique capabilities to address significant open questions in astrophysics, cosmology, and fundamental physics. We study some of the salient areas of γ 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 absorption on the extragalactic background light with a statistical uncertainty below 15% up to a redshift z=2 and to constrain or detect γ 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 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 cosmology.

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Section: Probing Lorentz Invariance Up To the Planck Scalementioning

confidence: 99%

Sensitivity of the Cherenkov Telescope Array for probing cosmology and fundamental physics with gamma-ray propagation

Martínez¹,

Larriva²,

Barrio³

et al. 2021

J. Cosmol. Astropart. Phys.

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show abstract

“…This will cause an unmatched opportunity for this and other LIV tests [52]. By performing and studying the simulations of the CTA observations of the nearby blazar Mrk501 and 1ES 200+209 spectra, CTA shows the preliminary outcome that it will be sensitive to the subliminal pair production threshold shift effects produced at least up to the E Pl for the linear LIV coefficient [53,54].…”

Section: Pair-production Threshold Shiftmentioning

confidence: 99%

Lorentz Invariance Violation Tests in Astroparticle Physics

2020

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In this review, we present the latest exclusion limits obtained from astroparticles on Lorentz Invariance Violation (LIV) in the photon sector. We discuss the techniques known as energy-dependent time delay or time lag, subluminal pair production threshold shift, suppression of air shower formation, superluminal photon decay, and superluminal photon splitting. Perspectives for future results on LIV with the next generation of experiments are also addressed.

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“…The CTA surveys will open up discovery space in an unbiased way and generate legacy datasets of long-lasting value. Several science projects of the CTA consortium can be found in this conference, see [5,6,7,8]. In a decade-long effort, CTA Consortium members have developed and built prototype telescopes, and validated their performance.…”

Section: Key Science Projectsmentioning

confidence: 99%

The Cherenkov Telescope Array

Mazin

2019

Preprint

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The Cherenkov Telescope Array (CTA) is the next generation ground-based observatory for gamma-ray astronomy at very-high energies. It will be capable of detecting gamma rays in the energy range from 20 GeV to more than 300 TeV with unprecedented precision in energy and directional reconstruction. With more than 100 telescopes of three different types it will be located in the northern hemisphere at La Palma, Spain, and in the southern at Paranal, Chile. CTA will be one of the largest astronomical infrastructures in the world with open data access and it will address questions in astronomy, astrophysics and fundamental physics in the next decades. In this presentation we will focus on the status of the CTA construction, the status of the telescope prototypes and highlight some of the physics perspectives.

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Testing cosmology and fundamental physics with the Cherenkov Telescope Array

Cited by 3 publications

References 17 publications

Sensitivity of the Cherenkov Telescope Array for probing cosmology and fundamental physics with gamma-ray propagation

Sensitivity of the Cherenkov Telescope Array for probing cosmology and fundamental physics with gamma-ray propagation

Lorentz Invariance Violation Tests in Astroparticle Physics

The Cherenkov Telescope Array

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