Axion-like particles and high energy astrophysics

Axion-like particles (ALPs) are light, neutral, pseudo-scalar bosons predicted by several extensions of the Standard Model of particle physics -- such as the String Theory -- and are supposed to interact primarily only with two photons. In the presence of an external magnetic field, photon-ALP oscil...

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Main Author: Galanti, Giorgio
Format: Article in Journal/Newspaper
Language:unknown
Published: arXiv 2019
Subjects:
High Energy Astrophysical Phenomena astro-ph.HE
High Energy Physics - Phenomenology hep-ph
FOS Physical sciences
taiga
Online Access:https://dx.doi.org/10.48550/arxiv.1911.09372
https://arxiv.org/abs/1911.09372
id ftdatacite:10.48550/arxiv.1911.09372
record_format openpolar
spelling ftdatacite:10.48550/arxiv.1911.09372 2023-05-15T18:30:51+02:00 Axion-like particles and high energy astrophysics Galanti, Giorgio 2019 https://dx.doi.org/10.48550/arxiv.1911.09372 https://arxiv.org/abs/1911.09372 unknown arXiv arXiv.org perpetual, non-exclusive license http://arxiv.org/licenses/nonexclusive-distrib/1.0/ High Energy Astrophysical Phenomena astro-ph.HE High Energy Physics - Phenomenology hep-ph FOS Physical sciences article-journal Article ScholarlyArticle Text 2019 ftdatacite https://doi.org/10.48550/arxiv.1911.09372 2022-03-10T16:23:21Z Axion-like particles (ALPs) are light, neutral, pseudo-scalar bosons predicted by several extensions of the Standard Model of particle physics -- such as the String Theory -- and are supposed to interact primarily only with two photons. In the presence of an external magnetic field, photon-ALP oscillations occur and can produce sizable astrophysical effects in the very-high energy (VHE) band ($100 \, {\rm GeV} - 100 \, {\rm TeV}$). Photon-ALP oscillations increase the transparency of the Universe to VHE photons partially preventing the gamma-gamma absorption caused by the Extragalactic Background Light (EBL). Moreover, they have important implications for active galactic nuclei (AGN) by modifying their observed spectra both for flat spectrum radio quasars (FSRQs) and BL Lacs. Many attempts have been made in order to constrain the ALP parameter space by studying irregularities in spectra due to photon-ALP conversion in galaxy clusters and the consequences of ALP emission by stars. Upcoming new VHE photon detectors like CTA, HAWC, GAMMA-400, LHAASO, TAIGA-HiSCORE, HERD and ASTRI will settle the issue. : 6 pages, 3 figures, Proceeding of "PHOTON 2019 - International Conference on the Structure and the Interactions of the Photon", June 3-7, 2019, Frascati - Italy, Frascati Physics Series Vol. 69 (2019) Article in Journal/Newspaper taiga DataCite Metadata Store (German National Library of Science and Technology)
institution Open Polar
collection DataCite Metadata Store (German National Library of Science and Technology)
op_collection_id ftdatacite
language unknown
topic High Energy Astrophysical Phenomena astro-ph.HE
High Energy Physics - Phenomenology hep-ph
FOS Physical sciences
spellingShingle High Energy Astrophysical Phenomena astro-ph.HE
High Energy Physics - Phenomenology hep-ph
FOS Physical sciences
Galanti, Giorgio
Axion-like particles and high energy astrophysics
topic_facet High Energy Astrophysical Phenomena astro-ph.HE
High Energy Physics - Phenomenology hep-ph
FOS Physical sciences
description Axion-like particles (ALPs) are light, neutral, pseudo-scalar bosons predicted by several extensions of the Standard Model of particle physics -- such as the String Theory -- and are supposed to interact primarily only with two photons. In the presence of an external magnetic field, photon-ALP oscillations occur and can produce sizable astrophysical effects in the very-high energy (VHE) band ($100 \, {\rm GeV} - 100 \, {\rm TeV}$). Photon-ALP oscillations increase the transparency of the Universe to VHE photons partially preventing the gamma-gamma absorption caused by the Extragalactic Background Light (EBL). Moreover, they have important implications for active galactic nuclei (AGN) by modifying their observed spectra both for flat spectrum radio quasars (FSRQs) and BL Lacs. Many attempts have been made in order to constrain the ALP parameter space by studying irregularities in spectra due to photon-ALP conversion in galaxy clusters and the consequences of ALP emission by stars. Upcoming new VHE photon detectors like CTA, HAWC, GAMMA-400, LHAASO, TAIGA-HiSCORE, HERD and ASTRI will settle the issue. : 6 pages, 3 figures, Proceeding of "PHOTON 2019 - International Conference on the Structure and the Interactions of the Photon", June 3-7, 2019, Frascati - Italy, Frascati Physics Series Vol. 69 (2019)
format Article in Journal/Newspaper
author Galanti, Giorgio
author_facet Galanti, Giorgio
author_sort Galanti, Giorgio
title Axion-like particles and high energy astrophysics
title_short Axion-like particles and high energy astrophysics
title_full Axion-like particles and high energy astrophysics
title_fullStr Axion-like particles and high energy astrophysics
title_full_unstemmed Axion-like particles and high energy astrophysics
title_sort axion-like particles and high energy astrophysics
publisher arXiv
publishDate 2019
url https://dx.doi.org/10.48550/arxiv.1911.09372
https://arxiv.org/abs/1911.09372
genre taiga
genre_facet taiga
op_rights arXiv.org perpetual, non-exclusive license
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
op_doi https://doi.org/10.48550/arxiv.1911.09372
_version_ 1766214456062246912

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