325 citations · 1.3k across the 28 of their papers we have counts for
28 papers
Optical spectroscopy and X-ray observations of the D-type symbiotic star EF Aql
K. A. Stoyanov, K. Iłkiewicz, G. J. M. Luna +6
We performed high-resolution optical spectroscopy and X-ray observations of the recently identified Mira-type symbiotic star EF Aql. Based on high-resolution optical spectroscopy o…
The recurrent nova RS Oph - simultaneous B and V band observations of the flickering variability
R. K. Zamanov, S. Boeva, G. Y. Latev +7
We performed 48.6 hours (in 28 nights) of simultaneous B and V band observations of the flickering variability of the recurrent nova RS Oph in quiescence. During the time of our ob…
Resolving the polarized dust emission of the disk around the massive star powering the HH~80-81 radio jet
J. M. Girart, M. Fernandez-Lopez, Z. -Y. Li +18
Here we present deep (16 mumJy), very high (40 mas) angular resolution 1.14 mm, polarimetric, Atacama Large Millimeter/submillimeter Array (ALMA) observations towards the massive p…
Optical spectroscopy of Be/gamma-ray binaries
R. K. Zamanov, K. A. Stoyanov, J. Marti +4
We report optical spectroscopic observations of the Be/gamma-ray binaries LSI+61303, MWC 148 and MWC 656. The peak separation and equivalent widths of prominent emission lines (H-a…
Circumstellar discs in X/gamma-ray binaries: first results from the Echelle spectrograph
R. Zamanov, K. Stoyanov, J. Martí
Here we report our first spectral observations of Be/X-ray and gamma-ray binaries obtained with the new Echelle spectrograph of the National Astronomical Observatory Rozhen. For fo…
Connection between orbital modulation of H-alpha and gamma-rays in the Be/X-ray binary LSI+61303
R. Zamanov, J. Martí, K. Stoyanov +2
We studied the average orbital modulation of various parameters (gamma-ray flux, H-alpha emission line, optical V band brightness) of the radio- and gamma-ray emitting Be/X-ray bin…