252 citations · 2.8k across the 102 of their papers we have counts for
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Search for AGN counterparts of unidentified Fermi-LAT sources with optical polarimetry: Demonstration of the technique
N. Mandarakas, D. Blinov, I. Liodakis +12
The third Fermi-LAT catalog (3FGL) presented the data of the first four years of observations from the Fermi Gamma-ray Space Telescope mission. There are 3034 sources, 1010 of whic…
Constraining the limiting brightness temperature and Doppler factors for the largest sample of radio bright blazars
I. Liodakis, T. Hovatta, D. Huppenkothen +3
Relativistic effects dominate the emission of blazar jets complicating our understanding of their intrinsic properties. Although many methods have been proposed to account for them…
Multiwavelength Cross-Correlations and Flaring Activity in Bright Blazars
I. Liodakis, R. W. Romani, A. V. Filippenko +4
Blazars are known for their energetic multiwavelength flares from radio wavelengths to high-energy -rays. In this work, we study radio, optical, and -ray light curves of 145…
Optical polarisation variability of narrow line Seyfert 1 galaxies
E. Angelakis, S. Kiehlmann, I. Myserlis +6
We have monitored the R-band optical linear polarisation of ten jetted NLSy1 galaxies with the aim to quantify their variability and search for candidate long rotation of the polar…
Optical polarisation variability of radio loud narrow line Seyfert 1 galaxies. Search for long rotations of the polarisation plane
E. Angelakis, S. Kiehlmann, I. Myserlis +5
Narrow line Seyfert 1 galaxies (NLSy1s) constitute the AGN subclass associated with systematically smaller black hole masses. A few radio loud ones have been detected in MeV -- GeV…
The broad-band properties of the intermediate synchrotron peaked BL Lac S2 0109+22 from radio to VHE gamma rays
MAGIC Collaboration, S. Ansoldi, L. A. Antonelli +163
The MAGIC telescopes observed S2 0109+22 in 2015 July during its flaring activity in high energy gamma rays observed by Fermi-LAT. We analyse the MAGIC data to characterise the ver…
Detection of persistent VHE gamma-ray emission from PKS 1510-089 by the MAGIC telescopes during low states between 2012 and 2017
MAGIC Collaboration, V. A. Acciari, S. Ansoldi +165
PKS 1510-089 is a flat spectrum radio quasar strongly variable in the optical and GeV range. We search for low-state VHE gamma-ray emission from PKS 1510-089. We aim to characteriz…
Simultaneous long-term monitoring of LS I +61°303 by OVRO and Fermi-LAT
Frederic Jaron, Maria Massi, Sebastian Kiehlmann +1
Previous long-term monitorings of the gamma-ray-loud X-ray binary LS I +61°303 have revealed the presence of a long-term modulation of ~4.5 years. After nine years of simultaneous…
Multiwavelength observations of the blazar BL Lacertae: a new fast TeV gamma-ray flare
A. U. Abeysekara, W. Benbow, R. Bird +74
Combined with very-long-baseline interferometry measurements, the observations of fast TeV gamma-ray flares probe the structure and emission mechanism of blazar jets. However, only…