Repozitorij Univerze v Novi Gorici

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Naslov:Scrutinizing FR 0 radio galaxies as ultra-high-energy cosmic ray source candidates
Avtorji:Merten, Lukas (Avtor)
Boughelilba, Margot (Avtor)
Reimer, Anita (Avtor)
Da Vela, Paolo (Avtor)
Vorobiov, Serguei (Avtor)
Tavecchio, Fabrizio (Avtor)
Bonnoli, Giacomo (Avtor)
Lundquist, Jon Paul (Avtor)
Righi, Chiara (Avtor)
Datoteke:Gradivo nima datotek. Gradivo je morda fizično dosegljivo v knjižnici fakultete, zalogo lahko preverite v COBISS-u. Povezava se odpre v novem oknu
Jezik:Angleški jezik
Vrsta gradiva:Neznano ()
Tipologija:1.01 - Izvirni znanstveni članek
Organizacija:UNG - Univerza v Novi Gorici
Opis:Fanaroff-Riley (FR) 0 radio galaxies compose a new class of radio galaxies, which are usually weaker but much more numerous than the well-established class of FR 1 and FR 2 galaxies. The latter classes have been proposed as sources of the ultra-high-energy cosmic rays (UHECRs) with energies reaching up to eV. Based on this conjecture, the possibility of UHECR acceleration and survival in an FR 0 source environment is examined in this work. In doing so, an average spectral energy distribution (SED) based on data from the FR 0 catalog (FR0CAT) is compiled. The resulting photon fields are used as targets for UHECRs, which suffer from electromagnetic pair production, photo-disintegration, photo-meson production losses, and synchrotron radiation. Multiple mechanisms are discussed to assess the UHECR acceleration probability, including Fermi-I order and gradual shear accelerations, and particle escape from the source region. This work shows that in a hybrid scenario, combining Fermi and shear accelerations, FR 0 galaxies can contribute to the observed UHECR flux, as long as where shear acceleration starts to dominate over escape. Even in less optimistic scenarios, FR 0s can be expected to contribute to the cosmic-ray flux between the knee and the ankle. Our results are relatively robust with respect to the realized magnetic turbulence model and the speed of the accelerating shocks.
Ključne besede:acceleration of particles, nonthermal radiation mechanisms, jets, active galaxies, cosmic rays
Leto izida:2021
Št. strani:str. 1-48
Številčenje:Vol. , 1
COBISS_ID:50457091 Povezava se odpre v novem oknu
UDK:539.1
ISSN pri članku:0927-6505
URN:URN:SI:UNG:REP:P8FF0HZC
DOI:10.1016/j.astropartphys.2021.102564 Povezava se odpre v novem oknu
Število ogledov:1211
Število prenosov:0
Metapodatki:XML RDF-CHPDL DC-XML DC-RDF
Področja:Gradivo ni uvrščeno v področja.
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Skupna ocena:(0 glasov)
Vaša ocena:Ocenjevanje je dovoljeno samo prijavljenim uporabnikom.

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Gradivo je del revije

Naslov:Astroparticle physics
Skrajšan naslov:Astropart. phys.
Založnik:North-Holland
ISSN:0927-6505
COBISS.SI-ID:67323 Novo okno

Gradivo je financirano iz projekta

Financer:ARRS - Agencija za raziskovalno dejavnost Republike Slovenije (ARRS)
Program financ.:Sofinanciranje znanstvenoraziskovalnega sodelovanja med RS in Avstrijo
Številka projekta:N1-0111
Naslov:Identification of cosmic ray sources amongst jetted active galaxies
Akronim:
ID projekta:info:eu-repo/grantAgreement/ARRS/Sofinanciranje%20znanstvenoraziskovalnega%20sodelovanja%20med%20RS%20in%20Avstrijo/N1-0111

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