70 citations · 322 across the 14 of their papers we have counts for
14 papers
Cold diffuse interstellar medium of Magellanic Clouds: II. Physical conditions from excitation of CI and H
D. N. Kosenko, S. A. Balashev, V. V. Klimenko
We present a comprehensive study of the excitation of CI fine-structure levels along 57 sight lines in the Large and Small Magellanic Clouds. The sight lines were selected by the d…
Estimation of the CMB temperature from atomic C\,{\sc i} and molecular CO lines in the interstellar medium of early galaxies
V. V. Klimenko, A. V. Ivanchik, P. Petitjean +2
The linear increase of the cosmic microwave background (CMB) temperature with cosmological redshift, , is a prediction of the standard cosmological CDM…
A new determination of the primordial helium abundance using the analyses of HII region spectra from SDSS
O. A. Kurichin, P. A. Kislitsyn, V. V. Klimenko +2
The precision measurement of the primordial helium abundance is a powerful probe of the early Universe. The most common way to determine is analyses of observations of…
Influence of radiative pumping on the HD rotational level populations in diffuse molecular clouds of the interstellar medium
V. V. Klimenko, A. V. Ivanchik
We present a theoretical calculation of the influence of ultraviolet radiative pumping on the excitation of the rotational levels of the ground vibrational state for HD molecules u…
Physical conditions in diffuse interstellar medium of local and high redshift galaxies: measurements based on excitation of H rotational and CI fine-structure levels
V. V. Klimenko, S. A. Balashev
We present results of analysis of physical conditions (number density, intensity of UV field, kinetic temperature) in the cold H-bearing interstellar medium of local and high r…
X-shooter observations of strong H-bearing DLAs at high redshift
S. A. Balashev, V. V. Klimenko, P. Noterdaeme +6
We present results from spectroscopic observations with X-shooter at the Very Large Telescope of seven H2-bearing DLAs at high redshifts (z). These DLAs were…
CO-dark molecular gas at high redshift: very large H content and high pressure in a low metallicity damped Lyman-alpha system
S. A. Balashev, P. Noterdaeme, H. Rahmani +6
We present a detailed analysis of a H-rich, extremely strong intervening Damped Ly- Absorption system (DLA) at towards the quasar J0843+0221, observe…
Estimation of physical conditions in the cold phase of the ISM in the sub-DLA system at z = 2.06 in the spectrum of the quasar J2123-0050
V. V. Klimenko, S. A. Balashev, A. V. Ivanchik +1
An independent analysis of the molecular hydrogen absorption system at z = 2.059 in the spectrum of the quasar J2123-0050 is presented. The H_2 system consists of two components (A…
Effect of a partial coverage of quasar broad-line regions by intervening H-bearing clouds
Dmitrii Ofengeim, Sergei Balashev, Aleksandr Ivanchik +2
We consider the effect of a partial coverage of quasar broad-line regions (QSO BLRs) by intervening H-bearing clouds when a part of quasar (QSO) radiation passes by a cloud not…
Partial covering of emission regions of Q 0528-250 by intervening H clouds
V. V. Klimenko, S. A. Balashev, A. V. Ivanchik +5
We present an analysis of the molecular hydrogen absorption system at z = 2.811 in the spectrum of the blazar Q0528-250. We demonstrate that the molecular cloud does no…
Neutral chlorine and molecular hydrogen at high redshift
S. A. Balashev, P. Noterdaeme, V. V. Klimenko +5
Chlorine and molecular hydrogen are known to be tightly linked together in the cold phase of the local interstellar medium through rapid chemical reactions. We present here the fir…
Molecular hydrogen absorption systems in Sloan Digital Sky Survey
S. A. Balashev, V. V. Klimenko, A. V. Ivanchik +3
We present a systematic search for molecular hydrogen absorption systems at high redshift in quasar spectra from the Sloan Digital Sky Survey (SDSS) II Data Release 7 and SDSS-III…
Influence of Gamma-Ray Emission on the Isotopic Composition of Clouds in the Interstellar Medium
V. V. Klimenko, A. V. Ivanchik, D. A. Varshalovich +1
We investigate one mechanism of the change in the isotopic composition of cosmologically distant clouds of interstellar gas whose matter was subjected only slightly to star formati…
Global Transients in ultraviolet and red-infrared ranges from data of the "Universitetsky-Tatiana-2" satellite
G. K. Garipov, B. A. Khrenov, P. A. Klimov +11
Detectors of fast flashes (duration of 1-128 ms) in near ultraviolet (240-400 nm) and red-infrared (>610 nm) ranges on board the "Universitetsky-Tatiana-2" satellite have measured…