401 citations · 1.2k across the 13 of their papers we have counts for
7 papers · 1 filter
Radio-loudness of Active Galaxies and the Black Hole Evolution
M. Sikora, L. Stawarz, J. -P. Lasota
Active galactic nuclei (AGNs) form two distinct sequences on the radio-loudness -- Eddington-ratio plane. The `upper' sequence contains radio selected AGNs, the `lower' sequence is…
High Energy gamma-rays From FR I Jets
L. Stawarz, M. Sikora, M. Ostrowski
Thanks to Hubble and Chandra telescopes, some of the large scale jets in extragalactic radio sources are now being observed at optical and X-ray frequencies. For the FR I objects t…
On the Nature of MeV-blazars
Marek Sikora, Michal Blazejowski, Rafal Moderski +1
Broad-band spectra of the FSRQ (flat-spectrum-radio quasars) detected in the high energy gamma-ray band imply that there may be two types of such objects: those with steep gamma-ra…
Numerical simulations of radiation from blazar jets
R. Moderski, M. Sikora, M. Blazejowski
We present a description of our numerical code BLAZAR. This code calculates spectra and light curves of blazars during outbursts. The code is based on a model in which the non-ther…
Modeling Flares Produced in Blazars
M. Sikora, M. Blazejowski, R. Moderski +1
We model light curves of flares observed in blazars, assuming that they are produced by relativistic electrons/positrons injected by forward-reverse shocks traveling down the jet w…
Comptonization of Infrared Radiation from Hot Dust by Relativistic Jets in Quasars
M. Blazejowski, M. Sikora, R. Moderski +1
We demonstrate the importance of near-infrared radiation from hot dust for Compton cooling of electrons/positrons in quasar jets. In our model, we assume that the non-thermal radia…