activity
19962019
most citedPositron annihilation spectrum from the Galactic Center region observed by SPI/INTEGRAL

180 citations · 1k across the 27 of their papers we have counts for

collaborators

27 papers

astro-ph.GA2019★ 44 cited

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…

astro-ph.GA2017★ 70 cited

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…

astro-ph.GA2016★ 12 cited

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…

astro-ph.GA2015★ 75 cited

The primordial deuterium abundance: subDLA system at towards the QSO J1444+2919

S. A. Balashev, E. O. Zavarygin, A. V. Ivanchik +2

We report a new detection of neutral deuterium in the sub Damped Lyman Alpha system with low metallicity [O/H]\,=\, at towards QSO~J\,14442…

astro-ph.GA2015★ 22 cited

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…

astro-ph.GA2015★ 26 cited

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…