231 citations · 1.1k across the 42 of their papers we have counts for
8 papers · 1 filter
Peculiar nature of hard X-ray eclipse in SS433 from INTEGRAL observations
A. Cherepashchuk, K. Postnov, E. Antokhina +1
The analysis of INTEGRAL observations (2003-2008) of superaccreting galactic microquasar SS433 at precessional phases with the maximum disk opening angle is carried out. The shape…
Search for exotic matter from gravitational microlensing observations of stars
M. B. Bogdanov, A. M. Cherepashchuk
We consider small-scale spheroidal clusters of weakly interacting massive particles in our Galaxy as non-compact gravitational microlenses and predict the appearance of caustics in…
Eclipsing Binary System WN3(h)+O5V BAT99-129: Analysis of the MACHO Light Curve and the Parameters of the Components
I. I. Antokhin, A. M. Cherepashchuk
BAT99-129 is a massive eclipsing binary system in the Large Magellanic Cloud (LMC) which consists of WN3(h) and O5V components. A broad-band MACHO light curve of the system is stud…
INTEGRAL Observations of SS433: Analysis of Precessional and Orbital X-ray Periodicities
A. M. Cherepashchuk, R. A. Sunyaev, E. V. Seifina +7
Hard X-ray INT observations of SS 433 carried out during 2003-2005 years with an analysis of precessional and orbital variability is presented. The width of X-ray eclipse in the 25…
INTEGRAL observations of SS433: Results of coordinated campaign
A. M. Cherepashchuk, R. A. Sunyaev, S. N. Fabrika +18
Results of simultaneous INTEGRAL and optical observations of galactic microquasar SS433 in May 2003 and INTEGRAL/RXTE observations in March 2004 are presented. Persistent precessio…
On the constraining observations of the dark GRB 001109 and the properties of a z = 0.398 radio selected starburst galaxy contained in its error box
J. M. Castro Cerón, J. Gorosabel, A. J. Castro-Tirado +24
We present optical and NIR (near infrared) follow up observations of the GRB 001109 from 1 to 300 days after the burst. No transient emission was found at these wavelengths within…
Coordinated INTEGRAL and optical observations of SS433
A. M. Cherepashchuk, R. A. Sunyaev, S. N. Fabrika +14
Results of simultaneous {\it INTEGRAL} and optical observations of galactic microquasar SS433 in May 2003 are presented. The analysis of the X-ray and optical eclipse duration and…
Wolf-Rayet stars and GRB connection
A. M. Cherepashchuk, K. A. Postnov
Observed properties of GRBs, WR stars and their CO-cores in the end of evolution are analyzed. A possible bimodality of the observed GRB energy distribution ( erg for GRB9…