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Selected Recent Publications of D.A. Varshalovich [Click here to search publications at the Astrophysics Data System] (this external link provides also older publications and additional options)

• CO-dark molecular gas at high redshift: very large H₂ content and high pressure in a low-metallicity damped Lyman alpha system [arXiv:1705.10283]
  S.A. Balashev, P. Noterdaeme, H. Rahmani, V.V. Klimenko, C. Ledoux, P. Petitjean, R. Srianand, A.V. Ivanchik, D.A. Varshalovich
  Mon. Not. R. astr. Soc. 470, 2890-2910 (2017)
• The primordial deuterium abundance: subDLA system at z_abs=2.437 towards the QSO J1444+2919 [arXiv:1511.01797]
  S.A. Balashev, E.O. Zavarygin, A.V. Ivanchik, K.N. Telikova, D.A. Varshalovich
  Mon. Not. R. astr. Soc. 458, 2188-2198 (2016)
• A new estimation of HD/H₂ at high redshift using the spectrum of the quasar J 2123-0050 [1.0 MB]
  V.V. Klimenko. S.A. Balashev, A.V. Ivanchik, D.A. Varshalovich
  J. Phys.: Conf. Ser. 661, 012005 [6 pp.] (2015)
• Spectral distortions of the CMB dipole [arXiv:1505.06028]
  S.A. Balashev, E.E. Kholupenko, J. Chluba, A.V. Ivanchik, D.A. Varshalovich
  Astrophys. J. 810, 131 [6 pp.] (2015)
• H₂/HD molecular clouds in the early universe. An independent means of estimating the baryon density of the universe [1.5 MB]
  A.V. Ivanchik, S.A. Balashev, D.A. Varshalovich, V.V. Klimenko
  Astron. Rep. 59, 100-117 (2015) [original in Russian: Pis'ma v Astron. Zh. 89, 473-483 (2014)]
• Neutral chlorine and molecular hydrogen at high redshift [arXiv:1501.07165]
  S.A. Balashev, P. Noterdaeme, V.V. Klimenko, P. Petitjean, R. Srianand, C. Ledoux, A.V. Ivanchik, D.A. Varshalovich
  Astron. Astrophys. 575, L8 [4 pp.] (2015)
• Partial covering of the emission regions of Q 0528-250 by intervening H₂ clouds [arXiv:1501.07210]
  V.V. Klimenko, S.A. Balashev, A.V. Ivanchik, C. Ledoux, P. Noterdaeme, P. Petitjean, R. Srianand, D.A. Varshalovich
  Mon. Not. R. astr. Soc. 448, 280-298 (2015)
• The thermal Sunyaev-Zeldovich effect of primordial recombination radiation [arXiv:1402.3505]
  E.E. Kholupenko, S.A. Balashev, A.V. Ivanchik, D.A. Varshalovich
  Mon. Not. R. astr. Soc. 446, 3593-3607 (2015)
• H₂O maser pumping: The effect of quasi-resonance energy transfer in collisions between H₂ and H₂O molecules [arXiv:1407.3135]
  A.V. Nesterenok, D.A. Varshalovich
  Astronomy Lett. 40, 425-434 (2014) [original in Russian: Pis'ma v Astron. Zh. 89, 473-483 (2014)]
• Molecular hydrogen absorption systems in Sloan Digital Sky Survey [arXiv:1402.2672]
  S.A. Balashev, V.V. Klimenko, A.V. Ivanchik, D.A. Varshalovich, P. Petitjean, P. Noterdaeme
  Mon. Not. R. astr. Soc. 440, 225-239 (2014)
• Current status of the observations of variation of fundamental physical constants: a new constraint on the variation of μ = m_p/m_e from an analysis of H₂ systems in quasar spectra [Abstract in Russian]
  V.V. Klimenko, S.A. Balashev, A.V. Ivanchik, D.A. Varshalovich, P. Petitjean
  Conference "High Energy Astrophysics Today and Tomorrow — HEA-2013" (December 23-26, 2013, Moscow; poster)
• Incomplete coverage of the quasar Q0528−250 by a molecular hydrogen absorption system [Abstract in Russian]
  V.V. Klimenko, S.A. Balashev, A.V. Ivanchik, D.A. Varshalovich, P. Noterdaeme, P. Petitjean, R. Srianand
  Conference "High Energy Astrophysics Today and Tomorrow — HEA-2013" (December 23-26, 2013, Moscow; poster)
• Molecular-hydrogen absorption-systems in the SDSS catalog of quasar spectra [Abstract in Russian]
  S.A. Balashev, V.V. Klimenko, A.V. Ivanchik, D.A. Varshalovich
  Conference "High Energy Astrophysics Today and Tomorrow — HEA-2013" (December 23-26, 2013, Moscow; poster)
• Quasar spectroscopy and cosmology (793 KB)
  D.A. Varshalovich, A.V. Ivanchik, S.A. Balashev
  XXI International Conference on Spectral Line Shapes (ICSLS 2012) (3-9 June 2012, St Petersburg, Russia)
  J. Phys.: Conf. Ser., 397, 012051 [7 pages] (2012)
• GRIPS - Gamma-Ray Imaging, Polarimetry and Spectroscopy (1.2 MB)
  J. Greiner, K. Mannheim, F. Aharonian, [60 coauthors], D.A. Varshalovich, [4 coauthors]
  Experimental Astronomy 34, 551-582 (2012)
• Influence of gamma-ray emission on the isotopic composition of clouds in the interstellar medium [arXiv:1206.1631]
  V.V. Klimenko, A.V. Ivanchik, D.A. Varshalovich, G.G. Pavlov
  Astronomy Lett. 38, 364-379 (2012)
• Partial coverage of the Broad Line Region of Q1232+082 by an intervening H₂-bearing cloud [arXiv:1107.4808]
  S.A. Balashev, P. Petitjean, A.V. Ivanchik, C. Ledoux, R. Srianand, P. Noterdaeme, D.A. Varshalovich
  Mon. Not. R. astr. Soc. 418, 357-369 (2011)
• Advanced three level approximation for numerical treatment of cosmological recombination [arXiv:1104.3050]
  E.E. Kholupenko, A.V. Ivanchik, S.A. Balashev, D.A. Varshalovich
  Mon. Not. R. astr. Soc. 417, 2417-2425 (2011)
• Positron annihilation spectrum from the Galactic Centre region observed by SPIINTEGRAL, revisited: annihilation in a cooling ISM? (2719 K) [arXiv:1010.0864]
  E. Churazov, S. Sazonov, S. Tsygankov, R. Sunyaev, D. Varshalovich
  2011, Mon. Not. R. astr. Soc. 411, 1727-1743
• H₂¹⁶O and H₂¹⁸O maser emission from gas-dust clouds [arXiv:1107.3505]
  A.V. Nesterenok, D.A. Varshalovich
  Pis'ma v Astron. Zh. 37, 499-511 (2011) [English translation: Astronomy Letters 37, 456-467 (2011)]
• HD/H2 molecular clouds in the early Universe: The problem of primordial deuterium [arXiv:1009.4186]
  S.A. Balashev, A.V. Ivanchik, D.A. Varshalovich
  2010, Astronomy Lett. 36, 761-772
• Big Bang nucleosynthesis of deuterium and HD/H₂ molecular abundances in interstellar clouds of 12 Gyr ago
  D.A. Varshalovich, A.V. Ivanchik, S.A. Balashev, P. Petitjean
  2010, Physics - Uspekhi 53, 397-401 [Russian original (592 K): Usp. Fiz. Nauk 53, 415-419]
• HD molecules at high redshift: The absorption system at z=2.3377 towards Q 1232+082 [arXiv:1002.2107]
  A.V. Ivanchik, P. Petitjean, S.A. Balashev, R. Srianand, D.A. Varshalovich, C. Ledoux, P. Noterdaeme
  2010, Mon. Not. R. astr. Soc. 404, 1583-1590
• Asymmetry in the spectrum of high-velocity H₂O maser emission features in active galactic nuclei (538 K)
  A.V. Nesterenok, D.A. Varshalovich
  2010, Pis'ma v Astron. Zh. 36, 3-8 [English translation: Astronomy Letters 36, 1-6]
• Effect of radiative feedbacks for resonant transitions during cosmological recombination [arXiv:0912.5454]
  E.E. Kholupenko, A.V. Ivanchik, D.A. Varshalovich
  2010, Phys. Rev. D 81, 083004 [9 pages]
• Gamma-ray burst investigation via polarimetry and spectroscopy (GRIPS) (871 K)
  J. Greiner, A. Iyudin, G. Kanbach, A. Zoglauer, R. Diehl, F. Ryde, D. Hartmann, A. v. Kienlin, S. McBreen, M. Ajello, Z. Bagoly, L. G. Balasz, G. Barbiellini, R. Bellazini, L. Bezrukov, D. V. Bisikalo, G. Bisnovaty-Kogan, S. Boggs, A. Bykov, A. M. Cherepashuk, A. Chernenko, W. Collmar, G. DiCocco, W. Dro"ge, M. Gierlik, L. Hanlon, I. Horvath, R. Hudec, J. Kiener, C. Labanti, N. Langer, S. Larsson, G. Lichti, V. M. Lipunov, B. K. Lubsandorgiev, A. Majczyna, K. Mannheim, R. Marcinkowski, M. Marisaldi, B. McBreen, A. Meszaros, E. Orlando, M. I. Panasyuk, M. Pearce, E. Pian, R. V. Poleschuk, A. Pollo, A. Pozanenko, S. Savaglio, B. Shustov, A. Strong, S. Svertilov, V. Tatischeff, J. Uvarov, D.A. Varshalovich, C. B. Wunderer, G. Wrochna, A.G. Zabrodskij, L.M. Zeleny
  2009, Experimental Astronomy 23, 91-120
• Directional radiation and photodissociation regions in molecular hydrogen clouds (802 K)
  S.A. Balashev, D.A. Varshalovich, A.V. Ivanchik
  2009, Pis'ma v Astron. Zh. 35, 171-188 [English translation: Astronomy Letters 35, 150-166]
• Current status of astronomical observations on possible cosmological variations of the proton-to-electron mass ratio μ=m_p/m_e
  A. Ivanchik, D. Varshalovich, P. Petitjean
  2008, European Phys. J. - Special Topics 163, 191-196.
• HeII→HeI recombination of primordial helium plasma including the effect of neutral hydrogen [arXiv:0812.3067]
  E.E. Kholupenko, A.V. Ivanchik, D.A. Varshalovich
  2008, Pis'ma v Astronomicheskii Zhurnal 34, 803-818 [English translation: Astronomy Letters 34, 725-738]
• Rapid HeII→HeI recombination and radiation concerned with this process [astro-ph/0703438]
  E.E. Kholupenko, A.V. Ivanchik, D.A. Varshalovich
  2007, Mon. Not. R. astr. Soc. 378, L39-L43
• The redshift distribution of absorption-line systems in QSO spectra [astro-ph/0703277]
  A.I. Ryabinkov, A.D. Kaminker, D.A. Varshalovich
  2007, Mon. Not. R. astr. Soc. 376, 1838-1848
• Ab initio nonadiabatic calculation of the sensitivity coefficients for the X ¹Sigma_g⁺ -- B ¹Sigma_u⁺; C ¹Pi_u lines of H₂ to the proton-to-electron mass ratio (309 K, in Russian)
  V. V. Meshkov, A. V. Stolyarov, A.V. Ivanchik, D.A. Varshalovich
  2006, Pis'ma v ZhETF 83, 363-366 [English translation: JETP Letters 83, 303-307]
• The λ₀ = 1.35 cm H₂O maser line: The hyperfine structure and profile asymmetry (855 K)
  D.A. Varshalovich, A.V. Ivanchik, N.S. Babkovskaya
  2006, Astronomy Lett. 32, 29-38
• Annihilation emission from the galactic center: the INTEGRAL observatory results
  E.M. Churazov, R.A. Sunyaev, S.Yu. Sazonov, M.G. Revnivtsev, D.A. Varshalovich
  2006, Physics - Uspekhi 49, 319-324 [Russian original (183 K): Usp. Fiz. Nauk 53, 415-419]
• CMBR distortion concerned with recombination of the primordial hydrogen plasma [astro-ph/0509807]
  E.E. Kholupenko, A.V. Ivanchik, D.A. Varshalovich
  2005, Grav. Cosmol. 11, 161-165
• A new constraint on the time dependence of the proton-to-electron mass ratio. Analysis of the Q 0347-383 and Q 0405-443 spectra [astro-ph/0507174]
  A.V. Ivanchik, P. Petitjean, D.A. Varshalovich, B. Aracil, R. Srianand, H. Chand, C. Ledoux, P. Boisse
  2005, Astron. Astrophys. 440, 45-52
• Positron annihilation spectrum from the Galactic Center region observed by SPIINTEGRAL [astro-ph/0411351]
  E. Churazov, R. Sunyaev, S. Sazonov, M. Revnivtsev, D. Varshalovich
  2005, Mon. Not. R. astr. Soc. 357, 1377-1386
• A hard X-ray survey of the Galactic Center with INTEGRAL/IBIS. Catalog of sources [astro-ph/0402027]
  M.Revnivtsev, R.Sunyaev, D.A. Varshalovich, et al.
  2004, Astronomy Lett. 30, 382-389
• Burst activity of SGR 1806-20
  R.A. Sunyaev, V.V. Zheleznyakov, A.M. Cherepashchuk, D.A. Varshalovich, S.V. Molkov, A.A. Lutovinov, S.A. Grebenev
  2003, The Astronomer's Telegram, #183
• A catalogue of absorption-line systems in QSO spectra (43 K)
  A.I. Ryabinkov, A.D. Kaminker, D.A. Varshalovich
  2003, Astron. Astrophys. 412, 707-709
• Current status of the problem of cosmological variability of fundamental physical constants (76 K)
  D.A. Varshalovich, A.V. Ivanchik, A.V. Orlov, A.Y. Potekhin, P. Petitjean
  2003, in Lecture Notes in Physics, Vol. 627: Precision Physics of Simple Atomic Systems, S. Karshenboim, V. Smirnov (eds.) (Springer, Berlin-Heidelberg), p.199
• Astrophysical testing cosmological variability of fundamental physical constants (63 K)
  D.A. Varshalovich, A.V. Ivanchik, A.Y. Potekhin
  2003, in Proceedings of the Third International Sakharov Conference on Physics (Moscow, 2002), A. Semikhatov et al. (eds.), vol. 1 (World Scientific), p.486
• Does the proton-to-electron mass ratio vary in the course of cosmological evolution? [astro-ph/0210299]
  A.Ivanchik, P. Petitjean, E. Rodriguez, D. Varshalovich
  2003, in Proceedings of JENAM Workshop on Varying Fundamental Constants (Porto, 4th September 2002); Astrophys. Space Sci. 283, 583
• Do the fundamental constants vary in the course of the cosmological evolution? [astro-ph/0111429]
  A. Ivanchik, E. Rodriguez, P. Petitjean, D. Varshalovich
  2002, Astronomy Letters 28, 423
• Effects of possible deviations of fundamental phyical constants on primordial nucleosynthesis (106 K)
  A.V. Ivanchik, A.V. Orlov, D.A. Varshalovich
  2001, Astronomy Letters 27, 615
• Problems of cosmological variability of fundamental physical constants (98 K)
  D.A. Varshalovich, A.Y. Potekhin, A.V. Ivanchik
  2001, Physica Scripta T95, 76
• HD molecular lines in an absorption system at redshift 2.3377 [astro-ph/0107310]
  D. Varshalovich, A. Ivanchik, P. Petitjean, R. Srianand, C. Ledoux
  2001, Astronomy Letters 27, 683
• Distribution of absorption systems in quasar spectra in the redshift interval z=0.2-3.2
  D.A. Varshalovich, A.I. Ryabinkov, A.D. Kaminker
  2001, in: Astrophysics at the Edge of Centuries (RAS, Moscow), 350 [in Russian]
• Puzzle of the constancy of fundamental constants (63 K) [physics/0004068]
  D.A. Varshalovich, A.Y. Potekhin, A.V. Ivanchik
  2001, Comments on Modern Physics 2, D223
• Primordial nucleosynthesis: effects of possible variations of fundamental physical constants
  A.V. Orlov, A.V. Ivanchik, D.A. Varshalovich
  2000, Astron. Astrophys. Transactions 19, no.3-4, 375
• A model for the molecular accretion disk and H₂O maser in the nucleus of the galaxy NGC 4258 (321 K)
  N.S. Babkovskaya, D.A. Varshalovich
  2000, Astronomy Letters 26, 144
• Space-time distributions of QSO absorption systems (705 K)
  A.D. Kaminker, A.I. Ryabinkov, D.A. Varshalovich
  2000, Astron. & Astrophys. 358, 1
• Testing cosmological variability of fundamental constants (101 K) [physics/0004062]
  D.A. Varshalovich, A.Y. Potekhin, A.V. Ivanchik
  2000, in: R.W. Dunford, D.S. Gemmel, E.P. Kanter, B. Kraessig, S.H. Southworth, L. Young (eds.), X-ray and Inner-Shell Processes (Proc. 18th International Conf., Argonne, August 1999), AIP Conf. Proc. (AIP, Melville) vol. 506, p. 503
• The space-time distribution of absorbing matter in the redshift interval z=0.2-3.2
  A.I. Ryabinkov, A.D. Kaminker, D.A. Varshalovich
  1999, Gravitation and Cosmology 5, Suppl., 72
• Two fields of astrophysical studies: Fundamental constants and neutron stars (55 K)
  D.A. Varshalovich, D.G. Yakovlev, A.Y. Potekhin, A.V. Ivanchik
  1999, in: Zh.I. Alferov (ed.), Ioffe Institute: 1918-1998. Development and Research Activities (St. Petersburg, 1999) p. 200
• Do the fundamental physical constants have the same values in different regions of space-time? (161 K in Russian)
  D.A. Varshalovich, A.V. Ivanchik, A.Y. Potekhin
  1999, Zh. Tekhnich. Fiz. 69, no.9, 1 [English translation (64 K): Technical Physics 44, 1001]
• The fine-structure constant: a new observational limit on its cosmological variation and some theoretical consequences (117 K) [astro-ph/9810166]
  A.V. Ivanchik, A.Y. Potekhin, D.A. Varshalovich
  1999, Astron. & Astrophys. 343, 439
• Have fundamental physical constants changed during the cosmological evolution?
  D.A. Varshalovich, A.V. Ivanchik, A.Y. Potekhin
  1998, Izv. RAS, Ser. Phys. 62, 1714
• Angular momenta of a system of identical particles with a definite Young scheme
  D.A. Varshalovich, I.E. Mazets
  1998, Optics and Spectroscopy 84, 505
• Interpretation of anomalous helium abundance derived from radio recombination line observations of nebulae
  D. Ershov, S. Gulyaev, A. Ivanchik, D. Varshalovich, A. Tsivilev
  1998, Astron. Astrophys. Transactions 15, 281
• Testing cosmological variability of the proton-to-electron mass ratio using the spectrum of PKS 0528-250 (149 K) [astro-ph/9804116]
  A.Y. Potekhin, A.V. Ivanchik, D.A. Varshalovich, K.M. Lanzetta, J.A. Baldwin, G.M. Williger, R.F. Carswell
  1998, Astrophys. J., 505, 523
• The spatial and temporal distribution of matter in the redshift interval z=1.2-3.2 (673 K)
  A.I.Ryabinkov, D.A. Varshalovich, A.D. Kaminker
  1998, Astronomy Lett. 24, 418
• Polarization dependence of optical signals of coherence between magnetic sublevels of alkali-atom ground-state hyperfine structure
  E.B. Alexandrov, D.A. Varshalovich
  1997, Optics and Spectroscopy 82, 161
• Testing cosmological variations of fundamental physical constants by analysis of quasar spectra (38 K) [astro-ph/9607098]
  D.A. Varshalovich, A.Y. Potekhin, A.V. Ivanchik, V.E. Panchuk, K.M. Lanzetta
  1997, in: I.M. Dremin, A.D. Semikhatov (eds.),
  2nd Int. Sakharov Conf. on Physics (Moskow, May 19-26, 1996) (World Scientific, Singapore) p.178.
• Absorption systems in the spectra of the QSOs HS 1946+76, S5 0014+81, and S4 0636+68: New constraints on cosmological variation of the fine-structure constant (316 K)
  D.A. Varshalovich, V.E. Panchuk, A.V. Ivanchik,
  1996, Astronomy Lett. 22, 6
• Have the masses of molecules changed during the lifetime of the Universe? (283 K)
  D.A. Varshalovich, A.Y. Potekhin
  1996, Astronomy Lett. 22, 1
• Fundamental physical constants: upper limits on cosmological variations from quasar spectra
  D.A. Varshalovich, A.Y. Potekhin
  1996, in Proc. First International Conf. on CosmoParticle Physics "Cosmion-94", eds. M.Y. Khlopov, M.E. Prokhorov, A.A. Starobinsky, J.T.T. Van (Editions Frontiers, Italy, 1996) 147
• An observaional limit to cosmological variation of the proton-to-electron mass ratio
  D.A. Varshalovich, K.M. Lanzetta, J.A. Baldwin, A.Y. Potekhin, G.M. Williger, R.F. Carswell
  1996, in 17th Texas Symposium on Relativistic Astrophysics, eds. W. Voges, G. Wiedenmann, G.E. Morfill, J. Truemper, MPE report 261 (MPE, Garching bei Muenchen) p. 265
• Cosmological variability of fundamental physical constants by analysis of quasar spectra (69 K)
  D.A. Varshalovich, A.Y. Potekhin
  1995, Space Sci. Rev., 74, 259
• Testing the fine-structure constant for a possible cosmological variation from the analysis of quasar spectra (350 K)
  D.A. Varshalovich, A.Y. Potekhin
  1994, Astronomy Lett. 20, 771
• Spectra of distant quasars and verification of possible variation of fundamental constants over cosmological time-scales (112 K)
  D.A. Varshalovich, A.Y. Potekhin
  1994, in: T.J.-L. Courvoisier, A. Blecha (eds.), Multi-Wavelength Continuum Emission of AGN, IAU Symp. 159, (Kluwer, Dordrecht) 361
• Non-variability of the fine-structure constant over cosmological time scales (560 K)
  A.Y. Potekhin, D.A. Varshalovich
  1994, Astron. Astrophys. Suppl. Ser. 104, 89
• Spectra of distant quasars and verification of possible variation of fundamental constants over cosmological time-scales
  D.A. Varshalovich, A.Y. Potekhin
  1994, in Multi-Wavelength Continuum Emission of AGN, IAU Symp. 159, eds. T.J.-L. Courvoisier, A. Blecha (Kluwer, Dordrecht) p. 361
• An upper limit on possible time variation of the fine-structure constant from QSO absorption spectra
  A.Y. Potekhin, D.A. Varshalovich
  1994, Astron. Astrophys. Transactions, 5, no. 1-2, 103
• Check of the constancy of the fundamental constants over cosmological time
  D.A. Varshalovich, S.A.Levshakov, A.Y. Potekhin
  1993, Usp. Fiz. Nauk 163, no. 7, 111 [Physics-Uspekhi 36, 642]

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