554 citations
- St Petersburg UniversityRU161 papers
- Special Astrophysical ObservatoryRU100 papers
- Peter the Great St. Petersburg Polytechnic UniversityRU73 papers
- Kazan Federal UniversityRU72 papers
- Crimean Astrophysical ObservatoryUA40 papers
- University of TurkuFI39 papers
- Max Planck Institute for Radio AstronomyDE38 papers
- Centre National de la Recherche ScientifiqueFR36 papers
- Instituto de Astrofísica de AndalucíaES34 papers
- Center for Astrophysics Harvard & SmithsonianUS33 papers
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8 papers · 2 filters
X-ray Polarization Observations of BL Lacertae
Riccardo Middei, Ioannis Liodakis, Matteo Perri +143
Blazars are a class of jet-dominated active galactic nuclei with a typical double-humped spectral energy distribution. It is of common consensus the Synchrotron emission to be resp…
Multi-messenger characterization of Mrk 501 during historically low X-ray and -ray activity
MAGIC collaboration, H. Abe, S. Abe +322
We study the broadband emission of Mrk 501 using multi-wavelength observations from 2017 to 2020 performed with a multitude of instruments, involving, among others, MAGIC, Fermi-LA…
Polarized Blazar X-rays imply particle acceleration in shocks
Ioannis Liodakis, Alan P. Marscher, Iván Agudo +125
Most of the light from blazars, active galactic nuclei with jets of magnetized plasma that point nearly along the line of sight, is produced by high-energy particles, up to $\sim 1…
Determination of the Physical Parameters of AGNs in Seyfert 1 Galaxies LEDA 3095839 and VII Zw 244 Based on Spectropolarimetric Observations
Elena Shablovinskaya, Mikhail Piotrovich, Eugene Malygin +2
Here we present the detailed investigation of AGNs in two Seyfert 1 galaxies, LEDA 3095839 and VII Zw 244. Both of them were observed within the photometric reverberation mapping p…
Rapid X-ray Variability in Mkn 421 during a Multiwavelength Campaign
Alex G. Markowitz, Krzysztof Nalewajko, Gopal Bhatta +47
The study of short-term variability properties in AGN jets has the potential to shed light on their particle acceleration and emission mechanisms. We report results from a four-day…
Determination of supermassive black hole spins in local active galactic nuclei
M. Yu. Piotrovich, S. D. Buliga, T. M. Natsvlishvili
We estimated the radiative efficiency and spin value for a number of local active galactic nuclei with z < 0.34 using 3 popular models connecting the radiative efficiency with such…