Enhancing the Spectral Hardening of Cosmic TeV Photons by Mixing with Axionlike Particles in the Magnetized Cosmic Web

Montanino, Daniele ; Vazza, Franco ; Mirizzi, Alessandro ; Viel, Matteo (2017) Enhancing the Spectral Hardening of Cosmic TeV Photons by Mixing with Axionlike Particles in the Magnetized Cosmic Web. Physical Review Letters, 119 (101101). ISSN 1079-7114
Full text disponibile come:
[thumbnail of Enhancing the Spectral Hardening of Cosmic TeV Photons by Mixing with Axionlike Particles in the Magnetized Cosmic Web]
Anteprima
Documento di testo(pdf) (Enhancing the Spectral Hardening of Cosmic TeV Photons by Mixing with Axionlike Particles in the Magnetized Cosmic Web)
Licenza: Salvo eventuali più ampie autorizzazioni dell'autore, il contributo può essere liberamente consultato e può essere effettuato il salvataggio e la stampa di una copia per fini strettamente personali di studio, di ricerca e di insegnamento, con espresso divieto di qualunque utilizzo direttamente o indirettamente commerciale. Ogni altro diritto sul materiale è riservato.

Download (1MB) | Anteprima

Abstract

Large-scale extragalactic magnetic fields may induce conversions between very-high-energy photons and axionlike particles (ALPs), thereby shielding the photons from absorption on the extragalactic background light. However, in simplified "cell" models, used so far to represent extragalactic magnetic fields, this mechanism would be strongly suppressed by current astrophysical bounds. Here we consider a recent model of extragalactic magnetic fields obtained from large-scale cosmological simulations. Such simulated magnetic fields would have large enhancement in the filaments of matter. As a result, photon-ALP conversions would produce a significant spectral hardening for cosmic TeV photons. This effect would be probed with the upcoming Cherenkov Telescope Array detector. This possible detection would give a unique chance to perform a tomography of the magnetized cosmic web with ALPs.

Abstract
Tipologia del documento
Articolo
Autori
AutoreAffiliazioneORCID
Montanino, DanieleINFN, Lecce; Università del Salento
Vazza, FrancoUniversity of Bologna0000-0002-2821-7928
Mirizzi, AlessandroINFN, Bari ; Università di Bari
Viel, MatteoSISSA, Trieste; INFN/INAF, Trieste
Settori scientifico-disciplinari
ISSN
1079-7114
DOI
Data di deposito
11 Apr 2018 07:26
Ultima modifica
11 Apr 2018 07:26
Nome del Progetto
MAGCOW - The Magnetised Cosmic Web
Programma di finanziamento
EC - H2020
URI

Altri metadati

Statistica sui download

Statistica sui download

Gestione del documento: Visualizza il documento

^