activity
20082020
most citedA massive binary black-hole system in OJ287 and a test of general relativity

416 citations · 1.1k across the 32 of their papers we have counts for

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Showing astro-ph.SRShow all

11 papers · 1 filter

astro-ph.SR2020

Mount Suhora high cadence photometric survey of T Tauri-type stars

Michał Siwak, Marek Dróżdż, Karol Gut +3

Results of high-cadence multi-colour observations of 121 pre-main sequence stars available from the northern hemisphere are presented. The aim of this survey was to detect transit-…

astro-ph.SR2020★ 3 cited

International observational campaign of the 2014 eclipse of EE Cep

D. Pieńkowski, C. Gałan, T. Tomov +64

Context. EE Cep is one of few eclipsing binary systems with a dark, dusty disk around an invisible object similar to ε Aur. The system is characterized by grey and asymmetric eclip…

astro-ph.SR2018★ 21 cited

Insights into the inner regions of the FU Orionis disc

Michal Siwak, Maciej Winiarski, Waldemar Ogloza +12

Context. We investigate small-amplitude light variations in FU Ori occurring in timescales of days and weeks. Aims. We seek to determine the mechanisms that lead to these light cha…

astro-ph.SR2012★ 19 cited

International observational campaigns of the last two eclipses in EE Cephei: 2003 and 2008/9

C. Gałan, M. Mikołajewski, T. Tomov +87

Two observational campaigns were carried out during the eclipses of EE Cep in 2003 and 2008/9 to verify whether the eclipsing body in the system is indeed a dark disk and to unders…

astro-ph.SR2012★ 7 cited

Spectroscopic and Photometric Study of the Contact Binary BO CVn

S. Zola, R. H. Nelson, V. Senavci +4

We present the results of the study of the contact binary system BO CVn. We have obtained physical parameters of the components based on combined analysis of new, multi-color light…

astro-ph.SR2012★ 2 cited

A photometric and spectroscopic study of WW And - an Algol-type, long period binary system with an accretion disc

Michal Siwak, Stanislaw Zola, Tomasz Szymanski +5

We have analyzed the available spectra of WW And and for the first time obtained a reasonably well defined radial velocity curve of the primary star. Combined with the available ra…