42 citations · 42 across the 4 of their papers we have counts for
4 papers
On the relationship between the ellipticity of Galactic globular clusters and their X-ray luminosity
Georgi P. Petrov, Svetoslav Botev, Antoniya Valcheva +1
We examine the dependence of the ellipticity of globular clusters in the Milky Way on their X-ray luminosity using two modern catalogs and combine them with optical and X-ray data…
Structural Parameters of the Globular Cluster M 15
M. V. Petkova, G. P. Petrov, N. M. Kacharov +1
We present a detailed analysis of the structural parameters of the globular cluster M 15 using g- and i-band photometric data from Pan-STARRS1 DR2. The central coordinates ($X_{\rm…
A search for non-hidden broad-line region Seyfert 2 galaxies
Georgi P. Petrov
According to the unified model of active galactic nuclei, Seyfert 2 galaxies are physically the same as Seyfert 1 objects and they possess a broad-line region (BLR), but it is hidd…
Periodic radial velocity variations in RU Lupi
H. C. Stempels, G. F. Gahm, P. P Petrov
Context. RU Lup is a Classical T Tauri star with unusually strong emission lines, which has been interpreted as manifestations of accretion. Recently, evidence has accumulated that…