activity
20042026
most citedThe enhanced X-ray Timing and Polarimetry mission - eXTP

329 citations · 1.3k across the 58 of their papers we have counts for

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Showing astro-ph.GAShow all

10 papers · 1 filter

astro-ph.GA2026

Two Peas in a Pod: The First Confirmed Dual Active Galactic Nucleus within a Green Pea Galaxy System

Konstantinos Kouroumpatzakis, Peter G. Boorman, Jiří Svoboda +5

The growth of galaxies in the early Universe is thought to be dominated by compact, intensely star-forming systems, yet the corresponding growth of supermassive black holes (SMBHs)…

astro-ph.GA2026★ 1 cited

Blueberry and Green Pea galaxies live in low density environments

Maitrayee Gupta, Jiří Svoboda, Konstantinos Kouroumpatzakis +3

Little is currently known about the large-scale environments of Green Pea (GP) and Blueberry (BB) galaxies, which are low-mass, compact systems with extreme specific star-formation…

astro-ph.GA2025

XMM-Newton Conclusively Identifies an Active Galactic Nucleus in a Green Pea Galaxy

Peter G. Boorman, Jiří Svoboda, Daniel Stern +23

Green Pea galaxies are a class of compact, low-mass, low-metallicity star-forming galaxies in the relatively local universe. They are believed to be analogues of high-redshift gala…

astro-ph.GA2023★ 20 cited

Star-formation rate and stellar mass calibrations based on infrared photometry and their dependence on stellar population age and extinction

Konstantinos Kouroumpatzakis, Andreas Zezas, Elias Kyritsis +2

The stellar mass () and the star-formation rate (SFR) are among the most important features that characterize galaxies. Measuring these fundamental properties accurately i…

astro-ph.GA2022★ 21 cited

Do Radio Active Galactic Nuclei Reflect X-ray Binary Spectral States?

Emily Moravec, Jiri Svoboda, Abhijeet Borkar +5

Over recent years there has been mounting evidence that accreting supermassive black holes in active galactic nuclei (AGN) and stellar mass black holes have similar observational s…

astro-ph.GA2022★ 13 cited

X-ray emission from star cluster winds in starburst galaxies

Annika Franeck, Richard Wünsch, Sergio Martínez-González +5

Inspired by the excess soft X-ray emission recently detected in Green Pea galaxies, we model the soft X-ray emission (0.5 - 2.0 keV) of hot gas from star cluster winds. By combinin…

astro-ph.GA2017★ 35 cited

AGN spectral states from simultaneous UV and X-ray observations by XMM-Newton

Jiri Svoboda, Matteo Guainazzi, Andrea Merloni

The supermassive black holes in active galactic nuclei (AGN) and stellar-mass black holes in X-ray binaries (XRBs) are believed to work in a similar way. While XRBs evolve rapidly…

astro-ph.GA2015★ 17 cited

An X-ray variable absorber within the Broad Line Region in Fairall 51

Jiri Svoboda, Tobias Beuchert, Matteo Guainazzi +3

Fairall 51 is a polar-scattered Seyfert 1 galaxy, a type of active galaxies believed to represent a bridge between unobscured type-1 and obscured type-2 objects. Fairall 51 has sho…

astro-ph.GA2010★ 1 cited

Looking into the inner black hole accretion disc with relativistic models of iron line

Jiri Svoboda

We discuss black hole spin measurements employing the relativistic iron line profiles in the X-ray domain. We investigate the iron line band for two representative sources -- MCG -…

astro-ph.GA2009

Comparison of Relativistic Iron Line Models

Jiri Svoboda, Michal Dovciak, Rene W. Goosmann +1

The analysis of the broad iron line profile in the X-ray spectra of active galactic nuclei and black hole X-ray binaries allows us to constrain the spin parameter of the black hole…