Astronomy ReportsPub Date : 2025-02-26DOI: 10.1134/S1063772924701178
G. S. Bisnovatyi-Kogan
{"title":"Early Stages of the Expansion of the Universe","authors":"G. S. Bisnovatyi-Kogan","doi":"10.1134/S1063772924701178","DOIUrl":"10.1134/S1063772924701178","url":null,"abstract":"<p>The paper is devoted to the early stages of the expansion of the universe. Baryogenesis, the change of epochs during the expansion of the universe, and nucleosynthesis in the expanding universe are described.</p>","PeriodicalId":55440,"journal":{"name":"Astronomy Reports","volume":"68 1 supplement","pages":"S74 - S79"},"PeriodicalIF":1.1,"publicationDate":"2025-02-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143496640","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Astronomy ReportsPub Date : 2025-02-26DOI: 10.1134/S106377292470118X
G. S. Bisnovatyi-Kogan
{"title":"Gravitational Instability","authors":"G. S. Bisnovatyi-Kogan","doi":"10.1134/S106377292470118X","DOIUrl":"10.1134/S106377292470118X","url":null,"abstract":"<p>The paper discusses the nature of gravitational instability. The classical Jeans derivation, instability in an expanding universe, the nonlinear stage of perturbation growth, dark matter, and violent relaxation are considered.</p>","PeriodicalId":55440,"journal":{"name":"Astronomy Reports","volume":"68 1 supplement","pages":"S80 - S87"},"PeriodicalIF":1.1,"publicationDate":"2025-02-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143496673","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Astronomy ReportsPub Date : 2025-02-26DOI: 10.1134/S1063772924701166
G. S. Bisnovatyi-Kogan
{"title":"Equilibrium and Stability of Stars","authors":"G. S. Bisnovatyi-Kogan","doi":"10.1134/S1063772924701166","DOIUrl":"10.1134/S1063772924701166","url":null,"abstract":"<p>The paper describes the main stages in development of relativistic astrophysics and also provides basic information on the stellar equilibrium and stability.</p>","PeriodicalId":55440,"journal":{"name":"Astronomy Reports","volume":"68 1 supplement","pages":"S1 - S4"},"PeriodicalIF":1.1,"publicationDate":"2025-02-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143496770","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Astronomy ReportsPub Date : 2025-02-26DOI: 10.1134/S1063772924701075
G. S. Bisnovatyi-Kogan
{"title":"White Dwarfs and Neutron Stars","authors":"G. S. Bisnovatyi-Kogan","doi":"10.1134/S1063772924701075","DOIUrl":"10.1134/S1063772924701075","url":null,"abstract":"<p>The paper discusses an equation of state at high densities and temperatures. White dwarfs, Chandrasekhar mass limit, Oppenheimer–Volkoff equation, neutron stars and their mass limits, Coulomb crystal and quark stars are described.</p>","PeriodicalId":55440,"journal":{"name":"Astronomy Reports","volume":"68 1 supplement","pages":"S5 - S9"},"PeriodicalIF":1.1,"publicationDate":"2025-02-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143496771","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Astronomy ReportsPub Date : 2025-02-26DOI: 10.1134/S1063772924701087
G. S. Bisnovatyi-Kogan
{"title":"Black Holes","authors":"G. S. Bisnovatyi-Kogan","doi":"10.1134/S1063772924701087","DOIUrl":"10.1134/S1063772924701087","url":null,"abstract":"<p>The paper discusses various aspects of black hole studies: spherically symmetric field in empty space, solutions of Schwarzschild and Kerr, gravitational radius and event horizon, rotating black holes, ergosphere, extraction of rotational energy from a black hole.</p>","PeriodicalId":55440,"journal":{"name":"Astronomy Reports","volume":"68 1 supplement","pages":"S10 - S13"},"PeriodicalIF":1.1,"publicationDate":"2025-02-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143496772","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Astronomy ReportsPub Date : 2025-02-26DOI: 10.1134/S1063772924701099
G. S. Bisnovatyi-Kogan
{"title":"Accretion onto Black Holes. I","authors":"G. S. Bisnovatyi-Kogan","doi":"10.1134/S1063772924701099","DOIUrl":"10.1134/S1063772924701099","url":null,"abstract":"<p>The paper considers various problem related to accretion of matter onto black holes: accretion of polytropic gas, magnetic field evolution during accretion, radiation of magnetized gas during accretion, disk formation and scenario of stationary accretion.</p>","PeriodicalId":55440,"journal":{"name":"Astronomy Reports","volume":"68 1 supplement","pages":"S14 - S18"},"PeriodicalIF":1.1,"publicationDate":"2025-02-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143496674","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Astronomy ReportsPub Date : 2025-02-26DOI: 10.1134/S1063772924701063
G. S. Bisnovatyi-Kogan
{"title":"Cosmological Models","authors":"G. S. Bisnovatyi-Kogan","doi":"10.1134/S1063772924701063","DOIUrl":"10.1134/S1063772924701063","url":null,"abstract":"<p>The paper provides the basics of cosmological models. The Einstein equations, the cosmological constant, the expanding Friedmann Universe, redshift, and the Hubble constant are discussed.</p>","PeriodicalId":55440,"journal":{"name":"Astronomy Reports","volume":"68 1 supplement","pages":"S69 - S73"},"PeriodicalIF":1.1,"publicationDate":"2025-02-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143496639","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Astronomy ReportsPub Date : 2025-02-26DOI: 10.1134/S1063772924701142
G. S. Bisnovatyi-Kogan
{"title":"Star Clusters","authors":"G. S. Bisnovatyi-Kogan","doi":"10.1134/S1063772924701142","DOIUrl":"10.1134/S1063772924701142","url":null,"abstract":"<p>The paper considers relativistic star clusters, their dynamical and thermodynamical stability, gravothermal catastrophe, cluster evolution and formation of supermassive black holes, and star clusters around supermassive black holes.</p>","PeriodicalId":55440,"journal":{"name":"Astronomy Reports","volume":"68 1 supplement","pages":"S45 - S55"},"PeriodicalIF":1.1,"publicationDate":"2025-02-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143496767","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Astronomy ReportsPub Date : 2025-02-26DOI: 10.1134/S1063772924701191
G. S. Bisnovatyi-Kogan
{"title":"Cosmic Microwave Background Radiation","authors":"G. S. Bisnovatyi-Kogan","doi":"10.1134/S1063772924701191","DOIUrl":"10.1134/S1063772924701191","url":null,"abstract":"<p>The paper represents an overview of the history of the prediction and discovery of cosmic microwave background, as well as its properties. Fluctuations of the cosmic microwave background radiation and its usage to determine the global parameters of the universe are discussed.</p>","PeriodicalId":55440,"journal":{"name":"Astronomy Reports","volume":"68 1 supplement","pages":"S88 - S96"},"PeriodicalIF":1.1,"publicationDate":"2025-02-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143496769","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Astronomy ReportsPub Date : 2025-02-26DOI: 10.1134/S1063772924701130
G. S. Bisnovatyi-Kogan
{"title":"Radio Pulsars","authors":"G. S. Bisnovatyi-Kogan","doi":"10.1134/S1063772924701130","DOIUrl":"10.1134/S1063772924701130","url":null,"abstract":"<p>The paper is a review of the theory and observations of radio pulsars. The inclined rotator model, unipolar generator: Goldreich–Julian model, rotational energy losses, braking index, starquakes and period jumps, magnetic fields of pulsars, binary and recycled radio pulsars, determination of neutron star masses, emission of gravitational waves during the merger of neutron stars, cosmic gamma-ray bursts are described.</p>","PeriodicalId":55440,"journal":{"name":"Astronomy Reports","volume":"68 1 supplement","pages":"S36 - S44"},"PeriodicalIF":1.1,"publicationDate":"2025-02-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143496766","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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