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Photogravitational Axisymmetric Restricted Five-Body Problem 光引力轴对称受限五体问题
IF 1.1 4区 物理与天体物理
Astronomy Reports Pub Date : 2025-04-02 DOI: 10.1134/S1063772924600213
Prachi Sachan, Rajiv Aggarwal, Amit Mittal
{"title":"Photogravitational Axisymmetric Restricted Five-Body Problem","authors":"Prachi Sachan,&nbsp;Rajiv Aggarwal,&nbsp;Amit Mittal","doi":"10.1134/S1063772924600213","DOIUrl":"10.1134/S1063772924600213","url":null,"abstract":"<p>In the framework of photogravitational axisymmetric restricted five-body problem (PAR5BP), the existence and stability of the in-plane equilibrium points, the possible regions for motion are explored and analyzed numerically along with good agreement of the graphical results. We have determined the dynamics of the infinitesimal mass in the PAR5BP. We have determined the locations of the libration points (LPs) in the convex configuration. Further, the parametric evolution of the equilibrium points as the function of radiation parameter has been shown. The stability along with the zero velocity surface associated with the libration points are also investigated. It has been observed that none of the libration point is stable for any value of considered parameters.</p>","PeriodicalId":55440,"journal":{"name":"Astronomy Reports","volume":"69 1","pages":"45 - 57"},"PeriodicalIF":1.1,"publicationDate":"2025-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143761685","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}
引用次数: 0
Infrared and X-ray Emission of Supernova Remnant in a Clumpy Medium 团块介质中超新星剩余物的红外和 X 射线发射
IF 1.1 4区 物理与天体物理
Astronomy Reports Pub Date : 2025-04-02 DOI: 10.1134/S1063772925701495
S. Yu. Dedikov, E. O. Vasiliev
{"title":"Infrared and X-ray Emission of Supernova Remnant in a Clumpy Medium","authors":"S. Yu. Dedikov,&nbsp;E. O. Vasiliev","doi":"10.1134/S1063772925701495","DOIUrl":"10.1134/S1063772925701495","url":null,"abstract":"<p>The infrared (IR) to X-ray luminosity ratio (IRX) is an indicator of the role of the dust plays in cooling of hot gas in supernova remnants (SNRs). Using the 3D dynamics of gas and interstellar polydisperse dust grains we analyzed the evolution of SNR in the inhomogeneous medium. We obtained spatial distributions of the surface brightness both of the X-ray emission from hot gas inside SNR and the IR emission from the SNR swept-up shell, as well as, the average gas temperature in the SNR, <span>({{T}_{{text{X}}}})</span>. We found that the IRX changes significantly (~3–30 times) as a function of impact distance within the SNR and its age. In a low inhomogeneous medium the IRX drops rapidly during the SNR evolution. On the other hand, if large inhomogeneities are present in the medium, the IRX is maintained at higher levels during the late SNR evolution at radiative phase due to replenishment of the dust in the hot gas from incompletely destroyed fragments behind the shock front. We showed that the SNR evolution in terms of the {<span>({{T}_{{text{X}}}}-{text{IRX}})</span>} diagram is determined by the onset of the radiative phase. We illustrated that decreasing gas metallicity or density leads to high values of temperature and IRX ratio. We discuss how our results can be applied to the observational data to analyse the SNR older than 10 kyr (i.e., when the mass of the swept-up dust in the shell is expected to exceed that produced in the SNR) in the Galaxy and Large Magellanic Cloud.</p>","PeriodicalId":55440,"journal":{"name":"Astronomy Reports","volume":"69 1","pages":"1 - 13"},"PeriodicalIF":1.1,"publicationDate":"2025-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143761690","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}
引用次数: 0
Modeling of Transit Absorptions of Warm Neptune WASP-69b in the Metastable Helium Line 热海王星WASP-69b在亚稳氦谱线上的凌日吸收模拟
IF 1.1 4区 物理与天体物理
Astronomy Reports Pub Date : 2025-04-02 DOI: 10.1134/S1063772925701525
M. S. Rumenskikh, M. P. Golubovsky, I. B. Miroshnichenko, I. F. Shaikhislamov
{"title":"Modeling of Transit Absorptions of Warm Neptune WASP-69b in the Metastable Helium Line","authors":"M. S. Rumenskikh,&nbsp;M. P. Golubovsky,&nbsp;I. B. Miroshnichenko,&nbsp;I. F. Shaikhislamov","doi":"10.1134/S1063772925701525","DOIUrl":"10.1134/S1063772925701525","url":null,"abstract":"<p>In this paper, the results of complex numerical modeling of the transit absorptions of hot exoplanet WASP-69b in the metastable helium HeI(2<sup>3</sup>S) line have been presented. The modeling has been provided using a 3D MHD code, which allows for the simulation of effects that influence the absorption profile in various spectral lines and predicts a realistic distribution of the density of the main components and the structure of the interacting flows of planetary and stellar material. It has been shown that the simulated transit absorption profiles closely match the height and width of the measured transit profiles, which allowed for the estimation of the physicochemical parameters in the area of exoplanet WASP-69b.</p>","PeriodicalId":55440,"journal":{"name":"Astronomy Reports","volume":"69 1","pages":"37 - 44"},"PeriodicalIF":1.1,"publicationDate":"2025-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143761683","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}
引用次数: 0
Space Debris 空间碎片
IF 1.1 4区 物理与天体物理
Astronomy Reports Pub Date : 2025-03-15 DOI: 10.1134/S1063772925701458
B. M. Shustov, M. E. Prokhorov
{"title":"Space Debris","authors":"B. M. Shustov,&nbsp;M. E. Prokhorov","doi":"10.1134/S1063772925701458","DOIUrl":"10.1134/S1063772925701458","url":null,"abstract":"<p>The problem of space debris becomes an important obstacle to human expansion into space. The paper presents a classification of space debris objects, describes the population of near-earth orbits, as well as methods for monitoring space debris and ways to combat it.</p>","PeriodicalId":55440,"journal":{"name":"Astronomy Reports","volume":"68 2 supplement","pages":"S185 - S204"},"PeriodicalIF":1.1,"publicationDate":"2025-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143629623","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}
引用次数: 0
Astrophysical Hazards 天体物理危害
IF 1.1 4区 物理与天体物理
Astronomy Reports Pub Date : 2025-03-15 DOI: 10.1134/S1063772925701446
B. M. Shustov, M. E. Prokhorov
{"title":"Astrophysical Hazards","authors":"B. M. Shustov,&nbsp;M. E. Prokhorov","doi":"10.1134/S1063772925701446","DOIUrl":"10.1134/S1063772925701446","url":null,"abstract":"<p>The paper describes less obvious types of space hazards, such as encounters of the Solar System with other stars, crossing of the Galactic plane, passage through a molecular cloud, nearby supernova explosions, and gamma-ray bursts.</p>","PeriodicalId":55440,"journal":{"name":"Astronomy Reports","volume":"68 2 supplement","pages":"S166 - S184"},"PeriodicalIF":1.1,"publicationDate":"2025-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143629711","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}
引用次数: 0
Space Weather 太空天气
IF 1.1 4区 物理与天体物理
Astronomy Reports Pub Date : 2025-03-15 DOI: 10.1134/S1063772925701434
B. M. Shustov, M. E. Prokhorov
{"title":"Space Weather","authors":"B. M. Shustov,&nbsp;M. E. Prokhorov","doi":"10.1134/S1063772925701434","DOIUrl":"10.1134/S1063772925701434","url":null,"abstract":"<p>The paper describes major aspects of space weather and their influence on Earth and humankind.</p>","PeriodicalId":55440,"journal":{"name":"Astronomy Reports","volume":"68 2 supplement","pages":"S154 - S165"},"PeriodicalIF":1.1,"publicationDate":"2025-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143628725","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}
引用次数: 0
Hazards, Threats, Risks—Inevitable Factors of Civilization 危害、威胁、风险——文明的必然因素
IF 1.1 4区 物理与天体物理
Astronomy Reports Pub Date : 2025-03-15 DOI: 10.1134/S1063772925701410
B. M. Shustov, M. E. Prokhorov
{"title":"Hazards, Threats, Risks—Inevitable Factors of Civilization","authors":"B. M. Shustov,&nbsp;M. E. Prokhorov","doi":"10.1134/S1063772925701410","DOIUrl":"10.1134/S1063772925701410","url":null,"abstract":"<p>The paper presents a general review of space hazards and risks. Main types of space hazards are described.</p>","PeriodicalId":55440,"journal":{"name":"Astronomy Reports","volume":"68 2 supplement","pages":"S123 - S125"},"PeriodicalIF":1.1,"publicationDate":"2025-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143629745","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}
引用次数: 0
Asteroid and Comet Hazard 小行星和彗星危害
IF 1.1 4区 物理与天体物理
Astronomy Reports Pub Date : 2025-03-15 DOI: 10.1134/S1063772925701422
B. M. Shustov, M. E. Prokhorov
{"title":"Asteroid and Comet Hazard","authors":"B. M. Shustov,&nbsp;M. E. Prokhorov","doi":"10.1134/S1063772925701422","DOIUrl":"10.1134/S1063772925701422","url":null,"abstract":"<p>The paper presents an overview of modern concepts about the asteroid-comet hazard. It describes the types of hazardous celestial bodies, as well as the methods and tools of detecting and monitoring near-Earth objects.</p>","PeriodicalId":55440,"journal":{"name":"Astronomy Reports","volume":"68 2 supplement","pages":"S126 - S153"},"PeriodicalIF":1.1,"publicationDate":"2025-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143629688","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}
引用次数: 0
The Problem of Planetary Bioprotection 行星生物保护的问题
IF 1.1 4区 物理与天体物理
Astronomy Reports Pub Date : 2025-03-15 DOI: 10.1134/S106377292570146X
B. M. Shustov, M. E. Prokhorov
{"title":"The Problem of Planetary Bioprotection","authors":"B. M. Shustov,&nbsp;M. E. Prokhorov","doi":"10.1134/S106377292570146X","DOIUrl":"10.1134/S106377292570146X","url":null,"abstract":"<p>The paper is dedicated to space hazards related to biological contamination and includes recommendations or organizing planetary quarantine.</p>","PeriodicalId":55440,"journal":{"name":"Astronomy Reports","volume":"68 2 supplement","pages":"S205 - S211"},"PeriodicalIF":1.1,"publicationDate":"2025-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143629744","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}
引用次数: 0
The Dark and Quiet Sky Problem 黑暗和安静的天空问题
IF 1.1 4区 物理与天体物理
Astronomy Reports Pub Date : 2025-03-15 DOI: 10.1134/S1063772925701483
B. M. Shustov, M. E. Prokhorov
{"title":"The Dark and Quiet Sky Problem","authors":"B. M. Shustov,&nbsp;M. E. Prokhorov","doi":"10.1134/S1063772925701483","DOIUrl":"10.1134/S1063772925701483","url":null,"abstract":"<p>The paper discusses scientific, technical and organizational aspects of the problem of dark and quiet skies. The categories of artificial interference that negatively affect astronomical observations are described.</p>","PeriodicalId":55440,"journal":{"name":"Astronomy Reports","volume":"68 2 supplement","pages":"S236 - S248"},"PeriodicalIF":1.1,"publicationDate":"2025-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143629689","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}
引用次数: 0
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