147 research outputs found
Astronomy Reports V. 45, I. 05
No full textAstronomy Reports -- May 2001
Volume 45, Issue 5, pp. 331-414
Mapping of Bipolar Outflows and Methanol Masers in the CS(2–1) Line
G. M. Larionov, V. G. Promyslov, and I. E. Val'tts
pp. 331-338 Full Text: PDF (170 kB)
Variations of the H2O Maser Emission of W51M in 1981–1998
V. A. Samodurov and S. V. Logvinenko
pp. 339-349 Full Text: PDF (246 kB)
Coordinated Observations of Cyg X-1 (V1357 Cyg) from 1994–1998 in the Commonwealth of Independent States
E. A. Karitskaya, I. B. Voloshina, V. P. Goranskii, K. N. Grankin, É. B. Dzhaniashvili, O. V. Ezhkova, N. T. Kochiashvili, M. I. Kumsiashvili, A. V. Kusakin, V. M. Lyutyi , S. Yu. Mel'nikov, and N. V. Metlova
pp. 350-360 Full Text: PDF (215 kB)
The Structure of Shocks in the Atmospheres of Pulsating Stars
Yu. A. Fadeev
pp. 361-370 Full Text: PDF (121 kB)
Interpretation of the Light Curve of the Eclipsing Binary V444 Cyg on the Set of Convexo-Concave Functions
I. I. Antokhin and A. M. Cherepashchuk
pp. 371-381 Full Text: PDF (172 kB)
A Study of Rare Earth Elements in the Atmospheres of Chemically Peculiar Stars. Pr III and Nd III Lines
T. A. Ryabchikova, I. S. Savanov, V. P. Malanushenko, and D. O. Kudryavtsev
pp. 382-388 Full Text: PDF (73 kB)
Magnetic Fields and the P-dot–P Diagram for Radio Pulsars
I. F. Malov
pp. 389-394 Full Text: PDF (84 kB)
Measurement of the Turbulence in the Free Atmosphere above Mt. Maidanak
V. G. Kornilov and A. A. Tokovinin
pp. 395-408 Full Text: PDF (211 kB)
The Structure of the Photospheric Velocity Field near Halpha Filaments
B. A. Ioshpa and V. N. Obridko
pp. 409-414 Full Text: PDF (394 kB)Archived web conten
Astronomy Reports V. 46, I. 08
No full textAstronomy Reports -- August 2002
Volume 46, Issue 8, pp. 609-696
Optical Monitoring of the BL Lac Object ON 231 in 1972–1990
M. K. Babadzhanyants and E. T. Belokon'
pp. 609-625 Full Text: PDF (443 kB)
Reconstruction of the Strip Brightness Distribution in a Quasar Accretion Disk from Gravitational Microlensing Data
M. B. Bogdanov and A. M. Cherepashchuk
pp. 626-633 Full Text: PDF (211 kB)
Observations of the Flux of Very-High-Energy Gamma Rays from the Blazar 3C 66A
A. A. Stepanyan, Yu. I. Neshpor, N. A. Andreeva, O. R. Kalekin, N. A. Zhogolev, V. P. Fomin, and V. G. Shitov
pp. 634-638 Full Text: PDF (158 kB)
An Induction Accelerator of Cosmic Rays on the Axis of an Accretion Disk
A. A. Shatskii and N. S. Kardashev
pp. 639-645 Full Text: PDF (282 kB)
Observations of a Unique Minimum of RR Tau in the Optical and Near Infrared
V. P. Grinin, D. N. Shakhovskoi, V. I. Shenavrin, A. N. Rostopchina, and L. V. Tambovtseva
pp. 646-655 Full Text: PDF (308 kB)
The Evolutionary Status of UX CVn
V. V. Shimansky, N. V. Borisov, N. A. Sakhibullin, V. F. Suleimanov, and M. S. Stupalov
pp. 656-666 Full Text: PDF (329 kB)
A Model for the Population of Binary Stars in the Galaxy
A. V. Tutukov and L. R. Yungelson
pp. 667-683 Full Text: PDF (303 kB)
The Spectra of Hard Radiation from Radio Pulsars
I. F. Malov and G. Z. Machabeli
pp. 684-690 Full Text: PDF (185 kB)
Formation of Planetary Systems and Brown Dwarfs around Single Stars
A. B. Tutukov
pp. 691-695 Full Text: PDF (119 kB)
ERRATA
Erratum: "A Study of Rare-Earth Elements in the Atmospheres of Chemically Peculiar Stars. Pr III and Nd III Lines" [Astronomy Reports 45, 382–388 (2001)]
T. A. Ryabchikova, I. S. Savanov, V. P. Malanushenko, and D. O. Kudryavtsev
p. 696 Full Text: PDF (48 kB)Archived web conten
Physics of the Solid State V. 44, I. 11
No full textPhysics of the Solid State -- November 2002
Volume 44, Issue 11, pp. 2013-2209
REVIEWS
Intracenter Transitions of Iron-Group Ions in II–VI Semiconductor Matrices
V. F. Agekyan
pp. 2013-2030 Full Text: PDF (192 kB)
METALS AND SUPERCONDUCTORS
Microwave Field Effects in HTSC Single Crystals of Bi(2212)
A. V. Prikhod'ko and N. M. Shibanova
pp. 2031-2033 Full Text: PDF (37 kB)
SEMICONDUCTORS AND DIELECTRICS
On the Model of Divacancies in Germanium
N. D. Dolidze and B. E. Tsekvava
pp. 2034-2038 Full Text: PDF (83 kB)
Giant Dielectric Relaxation in SrTiO3–SrMg1/3Nb2/3O3 and SrTiO3–SrSc1/2Ta1/2O3 Solid Solutions
V. V. Lemanov, A. V. Sotnikov, E. P. Smirnova, and M. Weihnacht
pp. 2039-2049 Full Text: PDF (157 kB)
Jahn–Teller Chromium Ions in CdF2 and CaF2 Crystals: An EPR Spectroscopic Study in the Frequency Range 9.3–300 GHz
M. M. Zaripov, V. F. Tarasov, V. A. Ulanov, and G. S. Shakurov
pp. 2050-2054 Full Text: PDF (92 kB)
Frequency Dependences of Dielectric Properties of Metal–Insulator Composites
V. V. Novikov and K. W. Wojciechowski
pp. 2055-2062 Full Text: PDF (183 kB)
DEFECTS, DISLOCATIONS, AND PHYSICS OF STRENGTH
Specific Features of the Formation of Oxygen Defects in the SrFeO2.5 Ferrate with a Brownmillerite Structure
V. M. Zainullina, I. A. Leonidov, and V. L. Kozhevnikov
pp. 2063-2066 Full Text: PDF (56 kB)
Relaxation Kinetics of Primary Pairs of Radiation Defects in Ionic Crystals
V. M. Lisitsyn and A. N. Yakovlev
pp. 2067-2071 Full Text: PDF (67 kB)
Kinetic Mechanism of the Formation of Fragmented Dislocation Structures upon Large Plastic Deformations
G. A. Malygin
pp. 2072-2079 Full Text: PDF (96 kB)
An Invariant Form of the Dynamic Criterion for Yield of Metals
A. A. Gruzdkov, Yu. V. Petrov, and V. I. Smirnov
pp. 2080-2082 Full Text: PDF (40 kB)
On the Possible Effect of a Magnetic Field on the Breaking of Mechanically Loaded Covalent Chemical Bonds
V. A. Zakrevskii, V. A. Pakhotin, and A. V. Shul'diner
pp. 2083-2086 Full Text: PDF (54 kB)
MAGNETISM AND FERROELECTRICITY
Effect of Irradiation with Ne+ Ions on the Transformations of Domain Structures of a Uniaxial Magnetic Film in an AC Magnetic Field
I. A. Melnichuk and E. L. Malanushenko
pp. 2087-2090 Full Text: PDF (48 kB)
Magnetic Properties of the HoMn2Ge2 Intermetallic Compound
Guo Guanghua, M. V. Eremin, N. P. Kolmakova, A. S. Lagutin, and R. Z. Levitin
pp. 2091-2094 Full Text: PDF (57 kB)
Tunneling Thermopower in Magnetic Granular Alloys
A. Granovskii, H. Sato, Y. Aoki, and A. Yurasov
pp. 2095-2097 Full Text: PDF (43 kB)
Unidirectional Anisotropy in a Ferromagnet–Antiferromagnet System
A. I. Morosov and A. S. Sigov
pp. 2098-2103 Full Text: PDF (70 kB)
Magnetic Susceptibility of the V15 Nanocluster in Megagauss Magnetic Fields
V. V. Platonov, O. M. Tatsenko, V. I. Plis, A. I. Popov, A. K. Zvezdin, and B. Barbara
pp. 2104-2106 Full Text: PDF (44 kB)
Faraday Effect in Tb3Ga5O12 in a Rapidly Increasing Ultrastrong Magnetic Field
R. Z. Levitin, A. K. Zvezdin, M. von Ortenberg, V. V. Platonov, V. I. Plis, A. I. Popov, N. Puhlmann, and O. M. Tatsenko
pp. 2107-2111 Full Text: PDF (63 kB)
High-Drive-Field Domain Wall Dynamics in Low-Damping Garnet Films
V. A. Bokov, V. V. Volkov, and N. L. Petrichenko
pp. 2112-2115 Full Text: PDF (49 kB)
Electromagnetic–Acoustic Transformation in an Erbium Single Crystal
V. D. Buchel'nikov, I. V. Bychkov, Yu. A. Nikishin, S. B. Palmer, C. M. Lim, and C. Edwards
pp. 2116-2123 Full Text: PDF (100 kB)
Width of the Ferromagnetic Resonance Line in an Anisotropic Magnet in Misoriented Resonance and Scanning Magnetic Fields
Yu. N. Shvachko, D. V. Starichenko, G. A. Shmatov, and Yu. V. Gobov
pp. 2124-2129 Full Text: PDF (99 kB)
Thermal Vibrations and the Structure of Quasi-Two-Dimensional R2CuO4 Crystals (R = La, Pr, Nd, Sm, Eu, and Gd)
E. I. Golovenchits, V. A. Sanina, A. A. Levin, Yu. F. Shepelev, and Yu. I. Smolin
pp. 2130-2144 Full Text: PDF (218 kB)
Kinetic Approach for Describing the Fatigue Effect in Ferroelectrics
V. Ya. Shur, E. L. Rumyantsev, E. V. Nikolaeva, E. I. Shishkin, and I. S. Baturin
pp. 2145-2150 Full Text: PDF (176 kB)
Kinetics of Domain Structure and Switching Currents in Single Crystals of Congruent and Stoichiometric Lithium Tantalate
V. Ya. Shur, E. V. Nikolaeva, E. I. Shishkin, V. L. Kozhevnikov, and A. P. Chernykh
pp. 2151-2156 Full Text: PDF (160 kB)
Dielectric Response of Ba0.75Sr0.25TiO3 Epitaxial Films to Electric Field and Temperature
Yu. A. Boikov, D. Erts, T. Claeson, and A. Yu. Boikov
pp. 2157-2164 Full Text: PDF (198 kB)
Anomalous States of the Crystal Structure of (Rb0.1(NH4)0.9)2SO4 Solid Solutions in the Temperature Range 4.2–300 K
I. M. Shmyt'ko, N. S. Afonikova, and V. I. Torgashev
pp. 2165-2170 Full Text: PDF (96 kB)
LATTICE DYNAMICS AND PHASE TRANSITIONS
Mechanism of Homogenization of the Martensite State of Crystals with a Shape Memory Effect
G. A. Malygin
pp. 2171-2174 Full Text: PDF (46 kB)
LOW-DIMENSIONAL SYSTEMS AND SURFACE PHYSICS
Perturbation Methods in the Kinetics of Nanocluster Growth
P. V. Gordon, S. A. Kukushkin, and A. V. Osipov
pp. 2175-2180 Full Text: PDF (71 kB)
A Manifestation of the Magnetopolaron Effect in Reflection and Absorption of Light by a Three-Level System in a Quantum Well
I. G. Lang, L. I. Korovin, D. A. Contreras-Solorio, and S. T. Pavlov
pp. 2181-2195 Full Text: PDF (196 kB)
Specific Features of Chemisorption on a Size-Quantized Film in an External Quantizing Magnetic Field
R. P. Meilanov, B. A. Abramova, M. M. Gadzhialiev, and V. V. Dzhabrailov
pp. 2196-2199 Full Text: PDF (57 kB)
FULLERENES AND ATOMIC CLUSTERS
Low-Frequency Dispersion of the Negative Dielectric Permittivity in C70 Films
V. V. Makarov and A. B. Sherman
pp. 2200-2203 Full Text: PDF (65 kB)
Absorption Line Spectrum of the C60Cl24 Halofullerene
B. S. Razbirin, A. N. Starukhin, A. V. Chugreev, A. S. Zgoda, V. P. Smirnov, Yu. S. Grushko, S. G. Kolesnik, P.-F. Coheur, J. Liévin, and R. Colin
pp. 2204-2209 Full Text: PDF (81 kB)Archived web conten
Cataclysmic Variables from Sloan Digital Sky Survey - V. The search for period bouncers continues
No full textSDSS-V is carrying out a dedicated survey for white dwarfs, single, and in binaries, and we report the analysis of the spectroscopy of 118 cataclysmic variables (CVs) and CV candidates obtained during the final plug plate observations of SDSS. We identify eight new CVs, spectroscopically confirm 53 and refute 11 published CV candidates, and we report 21 new or improved orbital periods. The orbital period distribution of the SDSS-V CVs does not clearly exhibit a period gap. In common with previous studies, the distribution shows that spectroscopically identified CVs have a larger proportion of short-period systems compared to samples identified from photometric variability. Remarkably, despite a systematic search, we find very few period bouncers. We estimate the space density of period bouncers to be, i.e. they represent only a few per cent of the total CV population. This suggests that during their final phase of evolution, CVs either destroy the donor, e.g. via a merger, or that they become detached and cease mass transfer
Analysis of He I 1083 nm Imaging Spectroscopy Using a Spectral Standard
No full textWe develop a technique. for the analysis of He I 1083 nanometer spectra which addresses several difficulties through determination of a continuum background by comparison with a well calibrated standard and through removal of nearby solar and telluric blends by differential comparison to an average spectrum. The method is compared with earlier analysis of imaging spectroscopy obtained at the National Solar Observatory/Kitt Peak Vacuum Telescope (NSO/KPVT) with the NASA/NSO Spectromagnetograph (SPM). We examine distributions of Doppler velocity and line width as a function of central intensity for an active region, filament, quiet Sun, and coronal hole. For our example, we find that line widths and central intensity are oppositely correlated in a coronal hole and quiet Sun. Line widths are comparable to the quiet sun in the active region, are systematically lower in the filament, and extend to higher values in the coronal hole. Outward velocities of approximately equal to 2 to 4 kilometers per second are typically observed in the coronal hole. The sensitivity of these results to analysis technique is discussed
The Investigations of Variations in the Depression λ 4200, λ 5200 of the Magnetic Stars 53CAM and Beta CrB.
No full textLuminous blue variable candidates in M31
No full text© 2020 The Author(s) Published by Oxford University Press on behalf of the Royal Astronomical Society. We study five luminous blue variable (LBV) candidates in the Andromeda galaxy and one more (MN112) in the Milky Way. We obtain the same-epoch near-infrared (NIR) and optical spectra on the 3.5-m telescope at the Apache Point Observatory and on the 6-m telescope of the SAO RAS. The candidates show typical LBV features in their spectra: broad and strong hydrogen lines, He i, Fe ii, and [Fe ii] lines. We estimate the temperatures, reddening, radii and luminosities of the stars using their spectral energy distributions. Bolometric luminosities of the candidates are similar to those of known LBV stars in the Andromeda galaxy. One candidate, J004341.84+411112.0, demonstrates photometric variability (about 0.27 mag in the V band), which allows us to classify it as an LBV. The star J004415.04+420156.2 shows characteristics typical of B[e] supergiants. The star J004411.36+413257.2 is classified as a Fe ii star. We confirm that the stars J004621.08+421308.2 and J004507.65+413740.8 are warm hypergiants. We obtain for the first time the NIR spectrum of the Galactic LBV candidate MN112. We use both optical and NIR spectra of MN112 for comparison with similar stars in M31 and notice identical spectra and the same temperature in J004341.84+411112.0. This allows us to confirm that MN112 is an LBV, which should show its brightness variability in longer time span observations
Cataclysmic Variables from Sloan Digital Sky Survey – V. The search for period bouncers continues
No full textSDSS-V is carrying out a dedicated survey for white dwarfs, single, and in binaries, and we report the analysis of the spectroscopy of 118 cataclysmic variables (CVs) and CV candidates obtained during the final plug plate observations of SDSS. We identify eight new CVs, spectroscopically confirm 53 and refute 11 published CV candidates, and we report 21 new or improved orbital periods. The orbital period distribution of the SDSS-V CVs does not clearly exhibit a period gap. In common with previous studies, the distribution shows that spectroscopically identified CVs have a larger proportion of short-period systems compared to samples identified from photometric variability. Remarkably, despite a systematic search, we find very few period bouncers. We estimate the space density of period bouncers to be , i.e. they represent only a few per cent of the total CV population. This suggests that during their final phase of evolution, CVs either destroy the donor, e.g. via a merger, or that they become detached and cease mass transfer.https://arxiv.org/abs/2305.13371First author draf
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