113 citations · 701 across the 33 of their papers we have counts for
4 papers · 1 filter
Precursor flares in OJ 287
P. Pihajoki, M. Valtonen, S. Zola +19
We have studied three most recent precursor flares in the light curve of the blazar OJ 287 while invoking the presence of a precessing binary black hole in the system to explain th…
Constraining jet production scenarios by studies of Narrow-Line-Radio-Galaxies
Marek Sikora, Grażyna Stasińska, Dorota Kozieł-Wierzbowska +2
We study a large sample of narrow-line radio galaxies (NLRGs) with extended radio structures. Using 1.4 GHz radio luminosities, , narrow optical emission line luminosities…
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…
CGCG 292-057 - a radio galaxy with merger-modulated radio activity
D. Kozieł-Wierzbowska, M. Jamrozy, S. Zola +2
We announce the discovery of a unique combination of features in a radio source identified with the merger galaxy CGCG 292-057. The radio galaxy both exhibits a highly complex, X-l…