81 citations · 283 across the 16 of their papers we have counts for
18 papers
X-ray point sources towards the giant radio lobes of Centaurus A
Karthik Balasubramaniam, Hsiang-Kuang Chang, Łukasz Stawarz +1
Centaurus A (NGC 5128) is the nearest radio galaxy (d = 3.8 Mpc), so individual X-ray point sources can be resolved against its giant radio lobes. We test whether a compact X-ray s…
NGC 6240 Supermassive Black Hole Binary dynamical evolution based on Chandra data
M. Sobolenko, O. Kompaniiets, P. Berczik +4
The main idea of our research is to estimate the physical coalescence time of the double supermassive black hole (SMBH) system in the centre of NGC 6240 based on the X-ray observat…
Observation of large scale precursor correlations between cosmic rays and earthquakes
P. Homola, V. Marchenko, A. Napolitano +40
The search for correlations between secondary cosmic ray detection rates and seismic effects has long been a subject of investigation motivated by the hope of identifying a new pre…
Comprehensive power spectral density analysis of the Fermi-LAT -ray light curves of selected blazars
Natalia Żywucka, Mariusz Tarnopolski, Volodymyr Marchenko +1
We present the results of the Fermi-Large Area Telescope (LAT) light curve (LC) modelling of selected blazars: six flat spectrum radio quasars (FSRQs) and five BL Lacertae (BL Lacs…
X-ray Emission of the -ray Loud Young Radio Galaxy NGC 3894
K. Balasubramaniam, L . Stawarz, C. C. Cheung +6
The radio source 1146+596 is hosted by an elliptical/S0 galaxy NGC\,3894, with a low-luminosity active nucleus. The radio structure is compact, suggesting a very young age of the j…
Complex Structure of the Eastern Lobe of the Pictor A Radio Galaxy: Spectral Analysis and X-ray/Radio Correlations
R. Thimmappa, Ł. Stawarz, U. Pajdosz-Śmierciak +2
Here we present detailed analysis of the distinct X-ray emission features present within the Eastern radio lobe of the Pictor A galaxy, around the jet termination region, utilising…
A Comprehensive Power Spectral Density Analysis of Astronomical Time Series. II. The Swift/BAT Long Gamma-Ray Bursts
Mariusz Tarnopolski, Volodymyr Marchenko
We investigated the prompt light curves (LCs) of long gamma-ray bursts (GRBs) from the Swift/BAT catalog. We aimed to characterize their power spectral densities (PSDs), search for…
A comprehensive power spectral density analysis of astronomical time series I: the Fermi-LAT gamma-ray light curves of selected blazars
Mariusz Tarnopolski, Natalia Żywucka, Volodymyr Marchenko +1
We present the results of the \textit{Fermi}-LAT 10-years-long light curves (LCs) modeling of selected blazars: six flat spectrum radio quasars (FSRQs) and five BL Lacertae (BL Lac…
Chandra View of the LINER-type Nucleus in the Radio-Loud Galaxy CGCG 292-057: Ionized Iron Line and Jet-ISM Interactions
K. Balasubramaniam, L. Stawarz, V. Marchenko +5
We present an analysis of the new, deep (94\,ksec) {\it Chandra} ACIS-S observation of radio-loud active galaxy CGCG\,292057, characterized by a LINER-type nucleus and a complex…
Chandra Imaging of the Western Hotspot in the Radio Galaxy Pictor A: Image Deconvolution and Variability Analysis
R. Thimmappa, Ł. Stawarz, V. Marchenko +3
Here we present an analysis of the X-ray morphology and flux variability of the particularly bright and extended Western hotspot in the nearest powerful (FR II-type) radio galaxy,…
Mid-Infrared Diagnostics of the Circumnuclear Environments of the Youngest Radio Galaxies
E. Kosmaczewski, L. Stawarz, A. Siemiginowska +6
We present a systematic analysis of the mid-infrared (MIR) properties of the youngest radio galaxies, based on low-resolution data provided by the {\it WISE} and {\it IRAS} satelli…
Optical variability modeling of newly identified blazar candidates behind Magellanic Clouds
Natalia Żywucka, Mariusz Tarnopolski, Markus Böttcher +2
We present an optical variability study of 44 newly identified blazar candidates behind the Magellanic Clouds, including 27 flat spectrum radio quasars (FSRQs) and 17 BL Lacertae o…
Optical variability modelling of newly identified blazar candidates behind Magellanic Clouds
Natalia Żywucka, Mariusz Tarnopolski, Markus Böttcher +2
We present results of a variability study in the optical band of 44 newly identified blazar candidates behind the Magellanic Clouds. Our sample contains 27 flat spectrum radio quas…
Search for ultra high energy cosmic rays from radiogalaxy Virgo A
Oleh Kobzar, Bohdan Hnatyk, Volodymyr Marchenko +1
Active galactic nuclei (AGNs) are considered to be one of the most appropriate sources of ultra high energy cosmic rays (UHECRs, ). Radiogalaxy Virg…
Stochastic modeling of multiwavelength variability of the classical BL Lac object OJ 287 on timescales ranging from decades to hours
A. Goyal, L. Stawarz, S. Zola +109
We present the results of our power spectral density analysis for the BL Lac object OJ\,287, utilizing the {\it Fermi}-LAT survey at high-energy -rays, {\it Swift}-XRT in X-rays…
The Influence of Magnetic Fields on UHECR Propagation from Virgo A
Oleh Kobzar, Olexandr Sushchov, Bohdan Hnatyk +1
Active galactic nuclei (AGN) are considered as one of the most appropriate sources of cosmic rays with energy exceeding eV. Virgo A (M87 or NGC 4486) is the second c…
Peculiar Radio Structures in the Central Regions of Galaxy Cluster Abell 585
M. Jamrozy, Ł Stawarz, V. Marchenko +4
In this paper we analyze the peculiar radio structure observed across the central region of the galaxy cluster Abell 585 (z=0.12). In the low-resolution radio maps, this structure…
Search for ultra high energy cosmic ray sources. FRI radio galaxy Centaurus A
Oleksandr Sushchov, Oleh Kobzar, Bohdan Hnatyk +1
The propagation of ultra high energy cosmic rays in Galactic and extragalactic magnetic fields is investigated in the present paper. The motion of charged particles of different en…