activity
19952026
most citedA possible mechanism for multiple changing look phenomenon in Active Galactic Nuclei

135 citations · 724 across the 26 of their papers we have counts for

collaborators

27 papers

astro-ph.HE2026

Low-angular-momentum accretion shocks can power weak-to-moderate X-ray flares from SgrA*

Samik Mitra, Bożena Czerny, Michal Zajaček +1

X-ray flares from Sgr~A* span broad ranges in duration, fluence, and luminosity, but their origin remains unsettled. We test whether standing shocks in low-angular-momentum magneti…

astro-ph.GA2022★ 19 cited

Dust-driven wind as a model of Broad Absorption Line quasars

Mohammad Hassan Naddaf, Mary Loli Martinez-Aldama, Paola Marziani +3

We test a scenario claiming that the broad absorption line (BAL) phenomenon in quasars (QSOs) is not a temporary stage of their life. In this scenario, we see the BAL effect only i…

astro-ph.GA2020★ 135 cited

A possible mechanism for multiple changing look phenomenon in Active Galactic Nuclei

M. Sniegowska, B. Czerny, E. Bon +1

Changing-look phenomenon observed now in a growing number of active galaxies challenges our understanding of the accretion process close to a black hole. We propose a simple explan…

astro-ph.GA2019

Increasing the Discovery Space in Astrophysics - A Collation of Six Submitted White Papers

G. Fabbiano, M. Elvis, A. Accomazzi +46

We write in response to the call from the 2020 Decadal Survey to submit white papers illustrating the most pressing scientific questions in astrophysics for the coming decade. We p…

astro-ph.GA2018★ 15 cited

What shapes the Absorption Measure Distribution in AGN outflows

T. P. Adhikari, A. Różańska, K. Hryniewicz +2

The Absorption Measure Distribution (AMD) in the X-ray outflows of Seyfert active galactic nuclei (AGN) describes the distribution of absorbing column density as a function of ioni…

astro-ph.GA2016

On the warm absorber in AGN outflow

T. P. Adhikari, A. Rozanska, M. Sobolewska +1

Warm absorber (WA) is an ionised gas present in the line of sight to the AGN central engine. The effect of the absorber is imprinted in the absorption lines observed in X-ray spect…