Publications (18)
GeV-radio correlation in Markarian 421
Vitalii Sliusar, Roland Walter, Matteo Balbo
Markarian 421 (Mrk 421) is a high-synchrotron-peaked blazar showing relentless variability across the electromagnetic spectrum from radio to gamma-rays. We use over 7-years of radi…
Long-term multi-band photometric monitoring of Mrk 501
Axel Arbet-Engels, Dominik Baack, Matteo Balbo +18
Radio-to-TeV observations of the bright nearby (z=0.034) blazar Markarian 501 (Mrk 501), performed from December 2012 to April 2018, are used to study the emission mechanisms in it…
Radioray response in blazars as a signature of adiabatic blob expansion
Andrea Tramacere, Vitalii Sliusar, Roland Walter +2
Multiwavelength light curves in long-term campaigns have shown that, for several blazars, the radio emission occurs with a significant delay w.r.t. to -ray band, with timescale…
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…
5.5 years multi-wavelength variability of Mrk 421: evidences of leptonic emission from the radio to TeV
Vitalii Sliusar, Axel Arbet-Engels, Dominik Baack +25
Mrk 421 is a high-synchrotron-peaked blazar featuring bright and persistent GeV and TeV emission. We use the longest and densest ongoing unbiased observing campaign obtained at TeV…
First Study of Combined Blazar Light Curves with FACT and HAWC
Daniela Dorner, Robert J. Lauer, : +28
For studying variable sources like blazars, it is crucial to achieve unbiased monitoring, either with dedicated telescopes in pointing mode or survey instruments. At TeV energies,…
Fermi acceleration under control: Carinae
Roland Walter, Matteo Balbo, Christos Panagiotou
We used data from the Fermi Large Area Telescope obtained during the last 7 years and spanning two passages of Carinae at periastron and compared them with the predictions of…
Relentless multi-wavelength variability of Mrk 421 and Mrk 501
Vitalii Sliusar, Axel Arbet-Engels, Dominik Baack +18
Mrk 421 and Mrk 501 are two close, bright and well-studied high-synchrotron-peaked blazars, which feature bright and persistent GeV and TeV emission. We use the longest and densest…
Fermi acceleration along the orbit of η Carinae
Matteo Balbo, Roland Walter
The η Carinae binary system hosts the most massive stars with the highest known mass-loss rate. Its dense wind encounters the faster wind expelled by the companion, dissipating me…
Observation of the galactic PeVatron candidate LHAASO J2108+5157 with the Large-Sized Telescope for Cherenkov Telescope Array
Jakub Juryšek, Matteo Balbo, Dominique Eckert +3
The Cherenkov Telescope Array (CTA) Observatory will be the next-generation ground-based very-high-energy gamma-ray observatory, sensitive from 20 GeV up to 300 TeV. The Large-Size…
Calibration and operation of SiPM-based cameras for gamma-ray astronomy in presence of high night-sky light
Imen Al Samarai, Cyril Martin Alispach, Matteo Balbo +56
The next generation of Cherenkov telescope cameras feature Silicon Photo Multipliers (SiPM), which can guarantee excellent performance and allow for observation also under moonligh…
Statistical properties of flux variations in blazar light curves at GeV and TeV energies
Sarah M. Wagner, Paul R. Burd, Daniela Dorner +23
Despite numerous detections of individual flares, the physical origin of the rapid variability observed from blazars remains uncertain. Using Bayesian blocks and the Eisenstein-Hut…
Carinae: particle acceleration and multi-messenger aspects
Roland Walter, Matteo Balbo
Carinae is composed of two very massive stars orbiting each other in 5.5 years. The primary star features the densest known stellar wind, colliding with that expelled by its c…
Gamma-rays and positrons from Colliding Wind Binaries
Matteo Balbo, Roland Walter
The Carinae binary system is the first -ray binary ever observed which does not contain a compact object. The dense wind of the primary star shocks against the fast light…
Chasing Gravitational Waves with the Cherenkov Telescope Array
Jarred Gershon Green, Alessandro Carosi, Lara Nava +563
The detection of gravitational waves from a binary neutron star merger by Advanced LIGO and Advanced Virgo (GW170817), along with the discovery of the electromagnetic counterparts…
The relentless variability of Mrk 421 from the TeV to the radio
Axel Arbet-Engels, Dominik Baack, Matteo Balbo +22
The origin of the gamma-ray emission of the blazar Mrk 421 is still a matter of debate. We used 5.5 years of unbiased observing campaign data, obtained using the FACT telescope and…
FACT -- Multi-wavelength analysis of more than 30 flares of Mrk 421
Vitalii Sliusar, Axel Arbet-Engels, Dominik Baack +22
Mrk 421 is a high-synchrotron-peaked blazar featuring bright and persistent GeV and TeV emission. We use multi-wavelength light curves of Mrk 421 spanning 5.5 years with FACT (TeV)…
Monte Carlo study of a single SST-1M prototype for the Cherenkov Telescope Array
Jakub Jurysek, Imen Al Samarai, Cyril Alispach +56
The SST-1M telescope was developed as a prototype of a Small-Size-Telescope for the Cherenkov Telescope Array observatory and it has been extensively tested in Krakow since 2017. I…