Solar System Research最新文献_第7页

Observations of the Sun from Close Distances 近距离观测太阳

IF 0.6 4区物理与天体物理

Solar System Research Pub Date : 2025-04-21 DOI: 10.1134/S0038094624600926

L. M. Zelenyi, V. D. Kuznetsov

引用次数: 0

Evolutionary History of the Atmosphere of the Young Mini-Neptune HD 207496b 年轻的迷你海王星HD 207496b的大气演化历史

IF 0.6 4区物理与天体物理

Solar System Research Pub Date : 2025-04-06 DOI: 10.1134/S0038094624601579

R. A. Evdokimov, V. I. Shematovich

{"title":"Evolutionary History of the Atmosphere of the Young Mini-Neptune HD 207496b","authors":"R. A. Evdokimov, V. I. Shematovich","doi":"10.1134/S0038094624601579","DOIUrl":"10.1134/S0038094624601579","url":null,"abstract":"The results of modeling of the escape of the primary atmosphere under the influence of the heat flux from the core for the exoplanet HD 207496b are considered. It is shown that this mechanism of gas envelope loss is not effective enough due to the relatively low equilibrium temperature of the exoplanet, as well as the relatively large mass. Previously, the high efficiency of photoevaporation of a hydrogen–helium atmosphere under the influence of extreme ultraviolet radiation was shown for HD 207496b (Barros et al., 2023). It has been demonstrated that if HD 207496b has a rocky core without a water mantle, surrounded by an envelope of primary composition, then the mass of the atmosphere should be about 0.5% of the mass of the exoplanet, and the gas envelope will be completely lost after about 500 million years. In this case, the initial mass fraction of the primary atmosphere for HD 207496b should have been about 2.2% (the age of the exoplanet is about 520 million years). However, the escape mechanism driven by the core’s heat flow cannot lead to significant atmospheric loss in this case. At the same time, the obtained result strongly depends on the equilibrium temperature and mass of the exoplanet. Accordingly, HD 207496b may be quite close to the boundary where the influence of core heat flow on gas envelope evolution becomes significant, and the obtained result becomes model-dependent. In this regard, it is advisable in future studies to consider several additional factors: the possibility of a water mantle, radiogenic heat flow, and tidal effects.","PeriodicalId":778,"journal":{"name":"Solar System Research","volume":"59 3","pages":""},"PeriodicalIF":0.6,"publicationDate":"2025-04-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143786459","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

Small Body and planets Precise Orbit Determination Toolkit (SPOT) and Its Application 小天体和行星精确轨道测定工具包（SPOT）及其应用

IF 0.6 4区物理与天体物理

Solar System Research Pub Date : 2025-04-06 DOI: 10.1134/S0038094624601634

Yan Jianguo, Gao Wutong, Wang Bo, Sun Shangbiao, Yang Wanling, Jean-Pierre Barriot

{"title":"Small Body and planets Precise Orbit Determination Toolkit (SPOT) and Its Application","authors":"Yan Jianguo, Gao Wutong, Wang Bo, Sun Shangbiao, Yang Wanling, Jean-Pierre Barriot","doi":"10.1134/S0038094624601634","DOIUrl":"10.1134/S0038094624601634","url":null,"abstract":"The orbiting and positioning of probes in deep-space exploration missions cannot be separated from the support of a software platform for precise orbit determination. The development of a software platform is essential in engineering and scientific applications. Thus, the Wuhan University planetary geodesy group has independently developed a software platform, called Small Body and planets Precise Orbit Determination Toolkit (SPOT), in response to the demand for spacecraft precise orbit determination. Moreover, aligned with the goal of supporting China’s first asteroid exploration mission, this initiative will significantly enhance the country’s scientific contributions in the field of radio science. This paper briefly introduces the design concept, core structure, and main functions of SPOT, and subsequently focuses on some simulation experiments and real tracking data analysis based on SPOT. The functionality and self-consistency of the SPOT were verified through simulation experiments, and construction of some new measurement models and inversions of small body gravity fields. The reliability of the software platform was further verified from the processing of radio tracking data and landmark data from the Rosetta mission, as well as from the Neptunian gravity estimated from the motion of Triton based on astrometric observations. The computational efficiency and accuracy of SPOT have reached international equivalent level.","PeriodicalId":778,"journal":{"name":"Solar System Research","volume":"59 3","pages":""},"PeriodicalIF":0.6,"publicationDate":"2025-04-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143786472","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

Charged Dust on the Moon 月球上带电的尘埃

IF 0.6 4区物理与天体物理

Solar System Research Pub Date : 2025-04-06 DOI: 10.1134/S0038094624600896

T. I. Morozova

引用次数: 0

Method of Checking the Spectral Sensitivity of Optical Paths of the Sun-Terahertz Scientific Instrumentation in the Frequency Range 0.4–20 THz 太阳-太赫兹科学仪器在0.4 - 20thz频率范围内光路光谱灵敏度的检测方法

IF 0.6 4区物理与天体物理

Solar System Research Pub Date : 2025-04-06 DOI: 10.1134/S0038094624601683

M. V. Philippov, V. S. Makhmutov, M. V. Razumeyko, G. I. Kropotov, V. A. Nikolaev

引用次数: 0

Kinetic Simulation of Ultra-Hot Jupiter KELT-9b 超热木星KELT-9b的动力学模拟

IF 0.6 4区物理与天体物理

Solar System Research Pub Date : 2025-04-06 DOI: 10.1134/S0038094624601506

I. F. Shaikhislamov, M. P. Golubovsky, A. V. Shepelin, I. B. Miroshnichenko, S. S. Sharipov, M. S. Rumenskikh, A. G. Berezutsky, A. A. Chibranov, M. L. Khodachenko

引用次数: 0

Observations of Potentially Hazardous Asteroid 139622 (2001 QQ142) 潜在危险小行星139622 （2001 QQ142）的观测

IF 0.6 4区物理与天体物理

Solar System Research Pub Date : 2025-04-06 DOI: 10.1134/S0038094624601324

A. V. Devyatkin, D. L. Gorshanov, V. N. L’vov, S. N. Petrova, A. A. Martyusheva, K. N. Naumov

引用次数: 0

Pulkovo Observations of the Major Planets, their Satellites and Pluto 普尔科沃对主要行星及其卫星和冥王星的观测

IF 0.6 4区物理与天体物理

Solar System Research Pub Date : 2025-04-06 DOI: 10.1134/S0038094624601646

E. V. Pitjeva, D. A. Pavlov

{"title":"Pulkovo Observations of the Major Planets, their Satellites and Pluto","authors":"E. V. Pitjeva, D. A. Pavlov","doi":"10.1134/S0038094624601646","DOIUrl":"10.1134/S0038094624601646","url":null,"abstract":"The paper presents the results of processing of positional observations of Jupiter, Saturn, Uranus, Neptune, and their satellites, as well as Pluto, carried out at the Pulkovo Observatory, as well as at the Mountain Astronomical Station of the Central Astronomical Observatory of the Russian Academy of Sciences (MAS CAO RAS) and at the Abastumani Astrophysical Observatory from the beginning of the 20th century to 2018. The observations were taken from the database of the Central Astronomical Observatory of the Russian Academy of Sciences, with the exception of two groups of observations taken from the VizieR database. The processing was carried out using the planetary ephemerides EPM developed at the Institute of Applied Astronomy of the Russian Academy of Sciences, as well as the ephemerides of the Galilean satellites and Neptune’s satellites and analytical theories of the satellites of Saturn and Uranus. During the processing, corrections were taken into account when switching from older star catalogs to modern ones, to which the observations were reduced. The results of a comparative analysis of the accuracy of determining planetary orbits using Pulkovo observations and without them are presented.","PeriodicalId":778,"journal":{"name":"Solar System Research","volume":"59 3","pages":""},"PeriodicalIF":0.6,"publicationDate":"2025-04-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143786469","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

Chandrasekhar’s Integral Stability Criterion Modified within the Kaniadakis κ-Statistics for an Equilibrium Cloud of a Protostar 原恒星平衡云在Kaniadakis κ统计中的修正Chandrasekhar积分稳定性判据

IF 0.6 4区物理与天体物理

Solar System Research Pub Date : 2025-04-05 DOI: 10.1134/S003809462460121X

A. V. Kolesnichenko

{"title":"Chandrasekhar’s Integral Stability Criterion Modified within the Kaniadakis κ-Statistics for an Equilibrium Cloud of a Protostar","authors":"A. V. Kolesnichenko","doi":"10.1134/S003809462460121X","DOIUrl":"10.1134/S003809462460121X","url":null,"abstract":"In the framework of nonextensive statistical mechanics of Kaniadakis, the integral stability theorem of Chandrasekhar has been generalized for a spherically symmetric distribution of matter and blackbody radiation in a protoplanetary cloud being in a state of gravitational equilibrium. For this purpose, we use the elements of deformed thermodynamics for an ideal gas, the deformed canonical Gibbs distribution, as well as the effective gravitational constant evaluated within the Verlinde formalisms. In the κ-statistics context, the modified thermodynamic properties of blackbody radiation, specifically, the analog of Stefan’s law for the radiation energy and the generalized expressions for the entropy, heat capacity, and radiation pressure, have been obtained. The proposed method of combining the mentioned anomalous physical processes provides an alternative to the classical procedure of Chandrasekhar’s derivation of the well-known integral theorems for gaseous configurations being in gravitational equilibrium. These results are to be used in modeling the processes of joint formation and evolution of protostars and an exoplanetary cloud from a single nebula.","PeriodicalId":778,"journal":{"name":"Solar System Research","volume":"59 2","pages":""},"PeriodicalIF":0.6,"publicationDate":"2025-04-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143784225","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

Jeans’ Instability of a Protoplanetary Disk with Accounting for the Magnetic Field and Radiation Modified within the Nonextensive Tsallis Kinetics 非扩展Tsallis动力学中考虑磁场和辐射的原行星盘的Jeans不稳定性

IF 0.6 4区物理与天体物理

Solar System Research Pub Date : 2025-04-05 DOI: 10.1134/S0038094624601208

A. V. Kolesnichenko

引用次数: 0