17 papers
Connecting the long-term variability behaviour of active galactic nuclei to their central engines
Sofia Kankkunen, Merja Tornikoski, Talvikki Hovatta
Analysing the long-term radio variability of active galactic nuclei (AGNs) is essential to understanding the physics of relativistic jets launched by supermassive black holes. We a…
A Ring of Fire Orphan γ-Ray Flare in the Neutrino Candidate 3C 120
E. Traianou, G. Bruni, J. Rodi +7
We present 43\,GHz VLBI observations of the radio galaxy 3C~120 during its brightest -ray outburst (March 2018), recently associated with the IceCube neutrino alert IC-180213A.…
First detection of VHE gamma-ray signal from the FSRQ TON 0599
MAGIC Collaboration, K. Abe, S. Abe +245
TON\,0599 (z=0.7247) belongs to the few flat spectrum radio quasars (FSRQs) detected in the very high energy (VHE, \,GeV) gamma-ray band. Its redshift makes it currently o…
A long-term multiwavelength study of the flat spectrum radio quasar OP 313
Chiara Bartolini, Elina Lindfors, Andrea Tramacere +25
The Flat Spectrum Radio Quasar OP 313 is a high-redshift (z = 0.997) blazar that entered an intense gamma-ray active phase from November 2023 to March 2024, as observed by the Larg…
Insights into jet-NLR energetics in PMN J0948+0022
B. Dalla Barba, L. Foschini, M. Berton +8
The analysis of the optical spectra of PMN J0948+0022 showed significant variations in the spectral lines that, when combined with the Fermi -ray light curve and radio observat…
Insights into the broad-band emission of the TeV blazar Mrk 501 during the first X-ray polarization measurements
S. Abe, J. Abhir, V. A. Acciari +260
We present the first multi-wavelength study of Mrk 501 including very-high-energy (VHE) gamma-ray observations simultaneous to X-ray polarization measurements from the Imaging X-ra…