Št. zadetkov: 9
Objavljeni znanstveni prispevek na konferenci
Oznake:
active galactic nuclei;low-luminosity jetted AGN;spine-sheath jet structure;
In several jetted AGNs, structured jets have been observed. In particular spine-sheath configurations
where the jet is radially divided into two or more zones of different flow velocities.
We present a model based on the particle and radiation transport code CR-ENTREES. Here,
interaction rates an ...
Leto:
2023
Vir:
Repozitorij Univerze v Novi Gorici (RUNG)
Objavljeni znanstveni prispevek na konferenci
Oznake:
cosmic rays;CR energy transport;CR interactions;
In order to understand observable signatures from putative cosmic-ray (CR) sources in-source
acceleration of particles, their energy and time-dependent transport including interactions in an
evolving environment and their escape from source have to be considered, in addition to sourceto-
Earth pr ...
Leto:
2023
Vir:
Repozitorij Univerze v Novi Gorici (RUNG)
Objavljeni povzetek znanstvenega prispevka na konferenci
Oznake:
multi-messenger astrophysics;ultra-high-energy cosmic rays;very-high-energy gamma-rays;
The detection of cosmic gamma rays, high-energy neutrinos and cosmic rays (CRs) signal the existence of environments in the Universe that allow particle acceleration to extremely high energies. These observable signatures from putative CR sources are the result of in-source acceleration of particles ...
Leto:
2023
Vir:
Repozitorij Univerze v Novi Gorici (RUNG)
Objavljeni znanstveni prispevek na konferenci
Oznake:
cosmic rays;low-luminosity jetted AGNCR energy transport;CR interactions;
We present a new energy transport code that models the time dependent and non-linear evolution
of spectra of cosmic-ray nuclei, their secondaries, and photon target fields. The software can inject
an arbitrary chemical composition including heavy elements up to iron nuclei. Energy losses and
seco ...
Leto:
2023
Vir:
Repozitorij Univerze v Novi Gorici (RUNG)
Objavljeni znanstveni prispevek na konferenci
Oznake:
ultra-high energy cosmic rays;UHECRs;Pierre Auger Observatory;UHECR propagation;UHECR interactions;UHECR energy spectrum;UHECR mass composition;UHECR sources;Fanaroff-Riley (FR) radio galaxies;FR0 galaxies;
Low luminosity Fanaroff-Riley type 0 (FR0) radio galaxies are amongst potential contributors to the observed flux of ultra-high energy cosmic rays (UHECRs). Due to FR0s’ much higher abundance in the local universe than more powerful radio galaxies (e.g., about five times more ubiquitous at redshifts ...
Leto:
2023
Vir:
Repozitorij Univerze v Novi Gorici (RUNG)
Izvirni znanstveni članek
Oznake:
acceleration of particles;nonthermal radiation mechanisms;jets;active galaxies;cosmic rays;
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 ...
Leto:
2021
Vir:
Repozitorij Univerze v Novi Gorici (RUNG)
Objavljeni znanstveni prispevek na konferenci
Oznake:
jetted active galaxies;FR-0 radiogalaxies;ultra-high energy cosmic rays;extragalactic magnetic fields;UHECR propagation;UHECR interactions;cosmogenic photons;cosmogenic neutrinos;
Recently, it has been shown that relatively low luminosity Fanaroff-Riley type 0 (FR-0) radio galaxies are a good candidate source class for a predominant fraction of cosmic rays (CR) accelerated to ultra-high energies (UHE, E>10[sup]18 eV). FR-0s can potentially provide a significant fraction
of t ...
Leto:
2022
Vir:
Repozitorij Univerze v Novi Gorici (RUNG)
Objavljeni znanstveni prispevek na konferenci
Oznake:
jetted active galaxies;FR-0 radiogalaxies;ultra-high energy cosmic rays;cosmic ray acceleration;cosmic ray energy losses;
Fanaroff-Riley (FR) 0 radio galaxies form a low-luminosity extension to the well-established ultra-high-energy cosmic-ray (UHECR) candidate accelerators FR-1 and FR-2 galaxies. Their much higher number density — up to a factor five times more numerous than FR-1 with z ≤ 0.05 — makes them good candid ...
Leto:
2022
Vir:
Repozitorij Univerze v Novi Gorici (RUNG)
Objavljeni znanstveni prispevek na konferenci
Oznake:
ultra-high energy cosmic rays;UHECR propagation;CRPropa;active galactic nuclei;jetted AGN;FR0 radio galaxies;Pierre Auger Observatory;UHECR energy spectrum;
This study investigates low luminosity Fanaroff-Riley Type 0 (FR0) radio galaxies as a potentially
significant source of ultra-high energy cosmic rays (UHECRs). Due to their much higher prevalence
in the local universe compared to more powerful radio galaxies (about five times more than
FR-1s), F ...
Leto:
2023
Vir:
Repozitorij Univerze v Novi Gorici (RUNG)