Relativistic jets from active galactic nuclei

R Blandford, D Meier… - Annual Review of …, 2019 - annualreviews.org
The nuclei of most normal galaxies contain supermassive black holes, which can accrete
gas through a disk and become active. These active galactic nuclei (AGNs) can form jets that …

Particle acceleration in astrophysical jets

JH Matthews, AR Bell, KM Blundell - New Astronomy Reviews, 2020 - Elsevier
In this chapter, we review some features of particle acceleration in astrophysical jets. We
begin by describing four observational results relating to the topic, with particular emphasis …

Discovery of X-ray polarization angle rotation in the jet from blazar Mrk 421

L Di Gesu, HL Marshall, SR Ehlert, DE Kim… - Nature …, 2023 - nature.com
The magnetic-field conditions in astrophysical relativistic jets can be probed by
multiwavelength polarimetry, which has been recently extended to X-rays. For example, one …

3FHL: The third catalog of hard Fermi-LAT sources

M Ajello, WB Atwood, L Baldini, J Ballet… - The Astrophysical …, 2017 - iopscience.iop.org
We present a catalog of sources detected above 10 GeV by the Fermi Large Area Telescope
(LAT) in the first 7 years of data using the Pass 8 event-level analysis. This is the Third …

The X-Ray Polarization View of Mrk 421 in an Average Flux State as Observed by the Imaging X-Ray Polarimetry Explorer

L Di Gesu, I Donnarumma, F Tavecchio… - The Astrophysical …, 2022 - iopscience.iop.org
Particle acceleration mechanisms in supermassive black hole jets, such as shock
acceleration, magnetic reconnection, and turbulence, are expected to have observable …

Multiwavelength variability and correlation studies of Mrk 421 during historically low X-ray and γ-ray activity in 2015–2016

VA Acciari, S Ansoldi, LA Antonelli… - Monthly Notices of …, 2021 - academic.oup.com
We report a characterization of the multiband flux variability and correlations of the nearby
(z= 0.031) blazar Markarian 421 (Mrk 421) using data from Metsähovi, Swift, Fermi-LAT …

Leptonic and hadronic radiative processes in supermassive-black-hole jets

M Cerruti - Galaxies, 2020 - mdpi.com
Supermassive black holes lying in the center of galaxies can launch relativistic jets of
plasma along their polar axis. The physics of black-hole jets is a very active research topic in …

Magnetic field properties inside the jet of Mrk 421-Multiwavelength polarimetry, including the Imaging X-ray Polarimetry Explorer

DE Kim, L Di Gesu, I Liodakis, AP Marscher… - Astronomy & …, 2024 - aanda.org
Aims. We aim to probe the magnetic field geometry and particle acceleration mechanism in
the relativistic jets of supermassive black holes. Methods. We conducted a polarimetry …

The first hard X-ray spectral catalogue of Blazars observed by NuSTAR

R Middei, P Giommi, M Perri, S Turriziani… - Monthly Notices of …, 2022 - academic.oup.com
Blazars are a peculiar class of active galactic nuclei that enlighten the sky at all
wavelengths. The electromagnetic emission of these sources is jet-dominated, resulting in a …

Gamma-ray observations of active galactic nuclei

G Madejski, M Sikora - Annual Review of Astronomy and …, 2016 - annualreviews.org
This article reviews the recent observational results regarding γ-ray emission from active
galaxies. The most numerous discrete extragalactic γ-ray sources are AGNs dominated by …