6 papers
HALO I: Photometric continuum reverberation mapping of Fairall 9
Amit Kumar Mandal, Francisco Pozo Nuñez, Vikram Kumar Jaiswal +23
We investigate the origin of inter-band continuum time delays in active galactic nuclei (AGNs) to study the structure and properties of their accretion disks. We aim to measure the…
Standardizing reverberation-mapped H active galactic nuclei using time-averaged radiusluminosity relations with 5100\,Ã \,, broad H, and narrow \OIII\ luminosities
Shulei Cao, Amit Kumar Mandal, Michal ZajaÄek +1
Active galactic nuclei (AGN) have been studied as alternate probes in cosmology due to their large and stable luminosities and broad redshift range. Previously it was shown that hi…
Standardizing a larger, higher-quality, homogeneous sample of reverberation-mapped H active galactic nuclei using the broad-line region radius-luminosity relation
Shulei Cao, Amit Kumar Mandal, Michal ZajaÄek +1
We present a high-quality, homogeneous sample of 157 H reverberation-mapped active galactic nuclei (RM AGNs) spanning redshifts , which is approxima…
Red giant - jet collisions in galactic nuclei I: 3D hydrodynamical model of a few stellar orbits
Petr Kurfürst, Michal ZajaÄek, Norbert Werner +1
Several models have been proposed to explain missing red giants (RGs) near the Galactic centre. Recently, a scenario has been suggested that predicts, among other processes, a long…
Standardizing reverberation-mapped H and H active galactic nuclei using radius--luminosity relations involving monochromatic and broad H luminosities
Shulei Cao, Amit Kumar Mandal, Michal ZajaÄek +2
We test the standardizability of a homogeneous sample of 41 lower-redshift () active galactic nuclei (AGNs) reverberation-mapped (RM) using the broad H$α…
Revealing EMRI/IMRI candidates with quasiperiodic ultrafast outflows
Michal ZajaÄek, Petra Suková, VladimÃr Karas +7
The first detection of the quasiperiodic ultrafast outflow in the ASASSN-20qc system was reported by Pasham et al. (2024). The outflow is revealed in the soft X-ray spectra as an a…