74 citations · 212 across the 12 of their papers we have counts for
12 papers
Extending the Little Red Dot population at intermediate redshift with VIPERS
Krzysztof Lisiecki, Krzysztof Hryniewicz, Francesco Pistis +7
Little red dots (LRDs) are a recently identified population of compact, red sources characterised by a distinctive V-shaped UV-to-optical continuum and broad emission lines. Their…
The optical-infrared relation for active galactic nuclei: The role of contaminations
Mateusz Rałowski, Krzysztof Hryniewicz, Katarzyna Małek +2
The main objective is to calibrate the OPT-IR luminosity relation for quasars, focusing on accurate estimations of dusty torus and accretion disk luminosities. We analyzed contamin…
A constant pressure model for the warm absorber in Mrk 509
Krzysztof Hryniewicz, Agata Różańska, Tek Prasad Adhikari +3
We present the analysis of 900 ks high-resolution RGS XMM-Newton observations of the nearby Seyfert galaxy Mrk 509 with the use of a self-consistent warm absorber (WA) model. We pe…
Changing Look AGN: A study of Optical/UV and the Highly Ionized Fe K X-ray Line Flux Variations Using Photo-Ionization Simulations
Tek P. Adhikari, Santanu Mondal, Zhicheng He +2
Significant variability in broad emission line strengths of active galactic nuclei (AGN) over months to years has been observed, often accompanied by intrinsic continuum changes. S…
Covering factor in AGNs: evolution versus selection
Mateusz Rałowski, Krzysztof Hryniewicz, Agnieszka Pollo +1
In every proposed unification scheme for Active Galactic Nuclei (AGN), an integral element is the presence of circumnuclear dust arranged in torus-like structures. A crucial model…
UV Fe II emission model of HE 0413-4031 and its relation to broad-line time delays
Michal Zajaček, Swayamtrupta Panda, Ashwani Pandey +11
Fe II emission is a well-known contributor to the UV spectra of active galactic nuclei and the modeling of this part may affect the results obtained for the MgII emiss…