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On the Nature of the 35-Day Cycle in HZ Her/Her X-1

Galactic population of black holes in detached binaries with low-mass stripped helium stars: The case of LB-1 (LS V+22 25)

Optical Spectroscopy of SRG/eROSITA Objects with 2.5-m Telescope at the Caucasus Mountain Observatory of the SAI MSU phase. We show that the TDS allows the spectra of objects ~20m to be taken in 2 h of observations with a

Wind-accreting symbiotic X-ray binaries Society. We present a new model of the population of symbiotic X-ray binaries (SyXBs) that takes

Discovery of orbital eccentricity and evidence for orbital period increase of SS433The examination of long-term (1979-2020) photometric observations of SS433 enabled us to discover a

Coordinated integral and optical observations of SS433 by INTEGRAL together with optical spectroscopy obtained on the 6-m telescope allows us to construct a model

Observations of Her X-1 in low states during SRG/eROSITA all-sky survey the source during the first and second SRG all-sky surveys. Both observations occurred during a low state

Estimation of vessel diameter and blood flow dynamics from laser speckle imagesLaser speckle imaging is a rapidly developing method to study changes of blood velocity

First simultanous X-ray and optical observations of rapid variability of supercritical accretor SS433 with respect to the optical emission by approximately 80 s. Such a delay can be interpreted as the travel time

CURRENT ASPECTS OF ARTERIAL-HYPERTENSION STUDIES

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