The nature of compact radio sources: the case of FR 0 radio galaxies
RD Baldi - The Astronomy and Astrophysics Review, 2023 - Springer
Radio-loud compact radio sources (CRSs) are characterised by morphological compactness
of the jet structure centred on the active nucleus of the galaxy. Most of the local elliptical …
of the jet structure centred on the active nucleus of the galaxy. Most of the local elliptical …
Active galactic nuclei as potential sources of ultra-high energy cosmic rays
FM Rieger - Universe, 2022 - mdpi.com
Active Galactic Nuclei (AGNs) and their relativistic jets belong to the most promising class of
ultra-high-energy cosmic ray (UHECR) accelerators. This compact review summarises basic …
ultra-high-energy cosmic ray (UHECR) accelerators. This compact review summarises basic …
Electron-proton co-acceleration on relativistic shocks in extreme-TeV blazars
A Zech, M Lemoine - Astronomy & Astrophysics, 2021 - aanda.org
Aims. The multi-wavelength emission from a newly identified population of 'extreme-
TeV'blazars, with Compton peak frequencies around 1 TeV, is difficult to interpret with …
TeV'blazars, with Compton peak frequencies around 1 TeV, is difficult to interpret with …
Blazars at Very High Energies: Emission Modelling
H Sol, A Zech - Galaxies, 2022 - mdpi.com
Blazars are very broadband cosmic sources with spectra spanning over twenty orders of
magnitude in frequency, down to the 100 MHz regime in the radio range, up to VHE at …
magnitude in frequency, down to the 100 MHz regime in the radio range, up to VHE at …
Particle acceleration in shearing flows: the self-generation of turbulent spine-sheath structures in relativistic magnetohydrodynamic jet simulations
ABSTRACT X-ray observations of kiloparsec-scale extragalactic jets favour a synchrotron
origin. The short cooling times of the emitting electrons require a distributed acceleration of …
origin. The short cooling times of the emitting electrons require a distributed acceleration of …
Event Horizon Telescope observations of the jet launching and collimation in Centaurus A
Very-long-baseline interferometry (VLBI) observations of active galactic nuclei at millimetre
wavelengths have the power to reveal the launching and initial collimation region of …
wavelengths have the power to reveal the launching and initial collimation region of …
Studying X-ray spectra from large-scale jets of FR II radio galaxies: application of shear particle acceleration
JC He, XN Sun, JS Wang, FM Rieger… - Monthly Notices of …, 2023 - academic.oup.com
Shear particle acceleration is a promising candidate for the origin of extended high-energy
emission in extra-galactic jets. In this paper, we explore the applicability of a shear model to …
emission in extra-galactic jets. In this paper, we explore the applicability of a shear model to …
Nuclear and electromagnetic cascades induced by ultra-high-energy cosmic rays in radio galaxies: implications for Centaurus A
Very high energy (VHE) γ-rays () and neutrinos are crucial for identifying accelerators of ultra-
high-energy cosmic rays (UHECRs), but this is challenging especially for UHECR nuclei. In …
high-energy cosmic rays (UHECRs), but this is challenging especially for UHECR nuclei. In …
Connecting steady emission and very high energy flaring states in blazars: The case of Mrk 421
A Dmytriiev, H Sol, A Zech - Monthly Notices of the Royal …, 2021 - academic.oup.com
Various attempts have been made in the literature at describing the origin and the physical
mechanisms behind flaring events in blazars with radiative emission models, but detailed …
mechanisms behind flaring events in blazars with radiative emission models, but detailed …
Galactic and extragalactic sources of very high energy gamma rays
Abstract Very high energy\(\gamma\)-rays are one of the most important messengers of the
relativistic non-thermal Universe. The major motivation of very high energy\(\gamma\)-ray …
relativistic non-thermal Universe. The major motivation of very high energy\(\gamma\)-ray …