Astronomy Letters, Volume 50

Volume 50, 2024, Issue 1

GRB 231115A - a Magnetar Giant Flare in the M82 Galaxy
P.Yu.Minaev, A.S.Pozanenko, S.A.Grebenev, I.V.Chelovekov, N.S.Pankov, A.A.Khabibullin, R.Ya.Inasaridze, A.O.Novichonok (pp.7-28; AstL: 1-24; astro-ph: 2402.08623)
Deep Hard X-ray Survey of the M81 Field Based on INTEGRAL Data
R.A.Krivonos, I.A.Mereminskiy, S.Yu.Sazonov (29-37; AstL: 25-33)
Estimation of the Accuracy of Stellar Atmosphere Parameters and Interstellar Extinction from Highly Accurate Broadband Photometry
Yu.V.Pakhomov (55-72; AstL: 34-52)
Study of the Carbon Star T Draconis
A.M.Tatarnikov, S.G.Zheltoukhov, V.I.Shenavrin, I.V.Sergeenkova, A.A.Vakhonin (73-81; AstL: 53-61)
On the Flare Activity of the H₂O Maser in DR21OH
A.V.Lapinov, A.M.Tolmachev, A.K.Kiselev, N.I.Lapin, S.A.Lapinova, I.A.Startseva, A.S.Loginova (82-89; AstL: 62-69)
Methyl Formate Synthesis Pathways at Various Star Formation Stages
O.V.Kochina, D.S.Wiebe (90-99; AstL: 70-80)
Stellar Wind and the Efficiency of Plasma Radio Emission from Exoplanets
V.V.Zaitsev, V.E.Shaposhnikov, M.L.Khodachenko, M.S.Rumenskikh (100-109; AstL: 81-91)
Radar Images of the Candidate Spacecraft Landing Sites on the Moon
Yu.S.Bondarenko, D.A.Marshalov, A.G.Mikhailov (110-116; AstL: 92-97)

Passage of a Gamma-Ray Burst through a Molecular Cloud: Cloud Ionization Structure
A.V.Nesterenok (121-141; AstL: 99-119)
The Method of Periodic Principal Components for the Dynamic Spectrum of Radio Pulsars and Faraday Rotation of Nine Pulse Components of PSR B0329+54
V.V.Kocharovsky, V.V.Vdovin, A.S.Gavrilov, E.R.Kocharovskaya, S.V.Logvinenko, E.M.Loskutov, V.M.Malofeev (142-162; AstL: 120-137)
Study of the Components of the Double Star ADS 15571 by Speckle Interferometry
E.N.Sokov, D.L.Gorshanov, I.S.Izmailov, N.A.Shakht, I.A.Sokova, A.S.Beskakotov, V.V.Dyachenko, A.F.Maksimov, A.A.Mitrofanova, D.A.Rasstegaev (163-171; AstL: 138-147)
Magnetic Field Structures of the Stars HD 94660, HD 75049, and HD 154708
Yu.V.Glagolevskij (172-179; AstL: 148-158)

Increase in the Brightness of the Cosmic Radio Background toward Galaxy Clusters
S.A.Grebenev, R.A.Sunyaev (183-207; AstL: 159-185)
Annihilation of Positrons from AGN Jets As a Possible Source of Cosmic Gamma-Ray Background at Energies below 511 keV
B.A.Nizamov, M.S.Pshirkov (208-215; AstL: 186-193)
Clumpy Accretion As a Possible Cause of Prolonged Eclipses in UX Ori Stars
V.P.Grinin, T.V.Demidova (223-232; AstL: 194-202)
Observation of a Helioseismically Active Solar Flare with a Low Hard X-ray Flux up to 50 keV
I.N.Sharykin, I.V.Zimovets, A.G.Kosovichev, I.I.Myshyakov (233-250; AstL: 203-219)
Erratum to the paper
by V.V.Kocharovsky, V.V.Vdovin, A.S.Gavrilov, E.R.Kocharovskaya, S.V.Logvinenko, E.M.Loskutov, V.M.Malofeev
The Method of Periodic Principal Components for the Dynamic Spectrum of Radio Pulsars and Faraday Rotation of Nine Pulse Components of PSR B0329+54, Astronomy Letters, 2024, v. 50, pp. 120-137 (pp.251-251; AstL: 220-220)

Prospects for Measuring the Post-Newtonian Parameter Using Two Satellites Equipped with Highly Stable Atomic Clocks
D.A.Litvinov (253-260; AstL: 221-229)
Activity of the Seyfert Galaxy NGC 7469 in 2016-2021: Observational Data
B.P.Artamonov, E.V.Shimanovskaya, V.V.Bruevich, O.Burkhonov, Sh.A.Egamberdiev (261-268; AstL: 230-237)
Estimation of the Kinematic Age of the Pictoris Moving Group from Up-to-date Data
V.V.Bobylev, A.T.Bajkova (269-280; AstL: 238-248)
Spectroscopy of B and Be Stars in the Very Young Open Star Cluster IC 1805
A.E.Tarasov (281-289; AstL: 249-257)
Analysis of the Parameters of Pre-Cataclysmic Binaries with sdB-subdwarfs: V1828 Aql
N.R.Deminova, V.V.Shimansky, N.V.Borisov, M.M.Gabdeev (290-300; AstL: 258-268)
Optical Characteristics of a Magnetocentrifugal Disk Wind in the Visual, Ultraviolet, and X-ray Spectral Ranges
M.A.Albrant, V.P.Grinin, T.A.Ermolaeva (301-310; AstL: 269-278)

New Active Galactic Nuclei Detected by the ART-XC and eROSITA Telescopes during the First Five SRG All-Sky X-ray Surveys. Part 2
G.S.Uskov, S.Yu.Sazonov, I.A.Zaznobin, M.R.Gilfanov, R.A.Burenin, E.V.Filippova, P.S.Medvedev, A.V.Moskaleva, R.A.Sunyaev, R.A.Krivonos, M.V.Eselevich (339-360; AstL: 279-301)
Stripping of a Neutron Star in a Close Binary System in a Pair with a Black Hole
N.I.Kramarev, A.G.Kuranov, A.V.Yudin, K.A.Postnov (325-338; AstL: 302-316)
The Hybrid Nova V1405 Cas with an Oxygen-Neon or Carbon-Oxygen White Dwarf?
T.N.Tarasova (361-371; AstL: 317-328)
The Ratio of the Areas of a Sunspot and Its Umbra: Two Populations of Sunspot Groups
Yu.A.Nagovitsyn (372-376; AstL: 329-334)
Spectroscopic and Photometric Study of the New Eclipsing Polar Gaia23cer
A.I.Kolbin, E.P.Pavlenko, V.Yu.Kochkina, A.S.Vinokurov, S.Yu.Shugarov, A.A.Sosnovskij, K.A.Antonyuk, O.I.Antonyuk, N.V.Pit', M.V.Suslikov, E.K.Galimova, N.V.Borisov, A.N.Burenkov, O.I.Spiridonova (313-324; AstL: 335-349)

SRGe J194401.8+284452 - an X-ray Cataclysmic Variable in the Field of the Gamma-Ray Source 4FGL J1943.9+2841
A.I.Kolbin, A.V.Karpova, M.V.Suslikov, I.F.Bikmaev, M.R.Gilfanov, I.M.Khamitov, Yu.A.Shibanov, D.A.Zyuzin, G.M.Beskin, V.L.Plokhotnichenko, A.G.Gutaev, S.V.Karpov, N.V.Lyapsina, P.S.Medvedev, R.A.Sunyaev, A.Yu.Kirichenko, M.A.Gorbachev, E.N.Irtuganov, R.I.Gumerov, N.A.Sakhibullin, E.S.Shablovinskaya, E.A.Malygin (412-432; AstL: 351-372)
Revision of the Calcium and Scandium Abundances in Am Stars Based on Non-LTE Calculations and Comparison with Diffusion Stellar Evolution Models
L.I.Mashonkina, Yu.A.Fadeyev (379-394; AstL: 373-389)
Non-LTE Nitrogen Abundances in the Sun and Selected A-F-Type Stars
L.I.Mashonkina, T.A.Ryabchikova (395-411; AstL: 390-407)
Study of the Solar Wind Plasma Thermodynamics in the Solar Corona Based on the Charge State of Heavy Ions
F.F.Goryaev, V.A.Slemzin (433-444; AstL: 408-419)
Origin of ``Bursts in Absorption'' in the Jovian Decameter Radio Emission
V.E.Shaposhnikov (445-453; AstL: 420-429)

Mergers of Binary Primordial Black Holes in Evolving Dark Matter Halos
V.D.Stasenko, Yu.N.Eroshenko (502-509; AstL: 431-439)
Investigation of the Spiral Structure of Galaxies in Compact Groups and in Isolation
M.N.Skryabina, A.D.Panasyuk, A.V.Mosenkov, P.I.Smirnova, A.A.Marchuk, I.V.Chugunov, V.P.Reshetnikov (489-501; AstL: 440-450)
Puzzle of [Ar II] 7 m Line Broad Component of SN 1987A
N.N.Chugai, V.P.Utrobin (457-463; AstL: 451-456)
The Influence of a Shock on the Nucleosynthesis Developing during the Explosion of a Low-Mass Neutron Star
I.V.Panov, A.Yu.Ignatovskiy, A.V.Yudin (478-488; AstL: 457-467)
Statistical Issues of Multichannel Reception and Processing of Pulsed Radio-Astronomical Signals
V.A.Fedorova, A.E.Rodin (464-477; AstL: 468-480)