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Article
Pavel Parenago and His Name in Science
The short biography of one of the founders of stellar astronomy as a science, Pavel Petrovich Parenago, is presented. Considered the question of which scientific phenomena and objects in astronomy bear his name.
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Article
Mass Computations of the Brightness of Stars in an Arbitrary Spectral Band
The problem of calculating the brightness of an array of stars in an arbitrary photometric band, which is not the standard band of astronomical photometry, is considered from their multicolor photometry in som...
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Article
Symmetry between Some Methods of Autonomous Spacecraft Navigation and Methods of Determining Their Position from Earth
We discovered that for some nonautonomous methods of navigation in space, there are autonomous methods ‘‘symmetrical’’ to them, in which all measurements are carried out only from the board of the spacecraft, ...
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Article
Processing and Analysis of Optical Non-Coordinate Information on Observed Objects
A method is considered for determining the type of observed objects based on identification of the photometric portrait of the object with one of the standard portraits existing in the database of the current ...
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Article
Systematic Errors of Starry Sky Simulators Using Raster Screens
For laboratory tests of the operating cycle of the star sensors of orientation, dynamic stands are designed, which include simulators of the starry sky. Recently, to obtain an image of the starry sky, raster s...
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Article
Analysis of the Sky Scanning Efficiency in the Lyra-B Space Experiment
The Lyra-B space experiment (SE) is a high-precision multicolor multiple all-sky photometric survey of stars and star-like objects. The experiment will be conducted from the Russian segment of the Internationa...
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Article
Mechanical means for controlling the geometry of optical spacecraft attitude control systems and the necessary accuracy of these means
The accuracy of modern spacecraft attitude sensors has recently come to exceed the accuracy provided by the rigidity of the mechanical designs of spacecraft. One possible solution to this problem is to introdu...
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Article
The necessity of introducing a geometric control subsystem into the composite attitude control systems of spacecraft and aircraft with modern precision
We propose to introduce a geometric control subsystem into the attitude control systems of space-craft that would allow the current system sensor configuration to be determined in real time.
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Article
Astronomical aspects of cosmic threats: new problems and approaches to asteroid—comet hazard following the chelyabinsk event of February 15, 2013
A new definition of hazardous celestial bodies (HCBs) is introduced, in which the lower limit of the size of a HCB is reduced to 10 m. A new definition for threatening and collisional orbits of DCBs is introdu...
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Article
Minimum star tracker specifications required to achieve a given attitude accuracy
We describe the principles of the computation of minimum specifications of the optical system and array detector of the star attitude sensor to achieve the required attitude accuracy for the given exposure. Th...
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Article
The LYRA-B space experiment: Goals and principles for its realization
We describe goals and principles for the realization the Lyra-B space experiment onboard the International Space Station, which is currently being prepared at the Sternberg Astronomical Institute. The main goa...
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Article
Description of the “Scenario Machine”
We present an updated description of the “Scenario Machine” code, which is used to carry out population-synthesis analyzes of the evolution of close binary stars.
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Article
Estimation of the recognition quality in the presence of a single learning sample of a limited size
The problem of estimating recognition quality is considered in the case when a researcher has a single learning sample with a limited size and unknown laws of distribution of objects in the attribute space. Fo...
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Article
Young Close-By Neutron Stars: The Gould Belt Vs. The Galactic Disc
We present new population synthesis calculations of close young neutron stars. In comparison with our previous investigation we use a different neutron star mass spectrum and different initial spatial and velo...
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Article
Nearby young single black holes
We consider nearby young black holes formed after supernova explosions in close binaries whose secondary components are currently observed as the so-called runaway stars. Using data on runaway stars and making...
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Article
Broadband gravitational-wave pulses from binary neutron stars in eccentric orbits
The gravitational-wave radiation from binary stars in elliptical orbits peaks at times close to the periastron passage. For a stationary distribution of binary neutron stars in the Galaxy, there are several sy...
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Article
The relation between the observed mass distribution for compact stars and the mechanism for supernova explosions
The observed mass distribution for the compact remnants of massive stars (neutron stars and black holes) and its relationship to the possible mechanism of ejection of the envelopes of type II and Ib/c supernov...
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Article
Formation of low-mass X-ray novae with black holes from triple systems
We apply a population synthesis technique to study the formation and evolution of low-mass X-ray binaries with black holes, observed as X-ray novae, from hierarchical triple systems. A scenario is suggested in...
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Article
Gamma-ray bursts as standard-energy explosions
The distribution of observed energies for gamma-ray bursts with known redshifts can be explained as a consequence of events releasing a standard energy of E 0=5×1051 erg. Two situations ar...
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Article
Stellar Evolution and the Cosmologial Supernovae Rates
We present the results of the population synthesis of the population ofthe supernovae progenitors. Both single and double degenerate progenitorsof SN Ia are considered. We compute the cosmic rate histories for...
