Cherenkov telescope array extragalactic survey discovery potential and the impact of axion-like particles and secondary gamma rays

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F17%3A00538337" target="_blank" >RIV/68378271:_____/17:00538337 - isvavai.cz</a>

Result on the web

<a href="https://doi.org/10.1016/j.astropartphys.2017.03.010" target="_blank" >https://doi.org/10.1016/j.astropartphys.2017.03.010</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.astropartphys.2017.03.010" target="_blank" >10.1016/j.astropartphys.2017.03.010</a>

Result language

angličtina

Original language name

Cherenkov telescope array extragalactic survey discovery potential and the impact of axion-like particles and secondary gamma rays

Original language description

The Cherenkov Telescope Array (CTA) is about to enter construction phase and one of its main key science projects is to perform an unbiased survey in search of extragalactic sources. We make use of both the latest blazar gamma-ray luminosity function and spectral energy distribution to derive the expected number of detectable sources for both the planned Northern and Southern arrays of the CTA observatory. We find that a shallow, wide survey of about 0.5 hour per field of view would lead to the highest number of blazar detections. Furthermore, we investigate the effect of axion-like particles and secondary gamma rays from propagating cosmic rays on the source count distribution, since these processes predict different spectral shape from standard extragalactic background light attenuation. We can generally expect more distant objects in the secondary gamma-ray scenario, while axion-like particles do not significantly alter the expected distribution. Yet, we find that, these results strongly depend on the assumed magnetic field strength during the propagation. We also provide source count predictions for the High Altitude Water Cherenkov observatory (HAWC), the Large High Altitude Air Shower Observatory (LHAASO) and a novel proposal of a hybrid detector.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

10303 - Particles and field physics

Project

—

Continuities

—

Publication year

2017

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Astroparticle Physics

ISSN

0927-6505

e-ISSN

—

Volume of the periodical

93

Issue of the periodical within the volume

July

Country of publishing house

NL - THE KINGDOM OF THE NETHERLANDS

Number of pages

9

Pages from-to

8-16

UT code for WoS article

000405977000002

EID of the result in the Scopus database

2-s2.0-85020302073