Solar System Research最新文献_第4页

Analysis of Water in the Regolith of the Moon Using the LASMA-LR Instrument During the Luna-27 Mission 在月球-27 飞行任务期间利用 LASMA-LR 仪器分析月球岩石中的水分

IF 0.6 4区物理与天体物理

Solar System Research Pub Date : 2024-09-09 DOI: 10.1134/S0038094624700436

A. E. Chumikov, V. S. Cheptsov, T. A. Abrahamyan

{"title":"Analysis of Water in the Regolith of the Moon Using the LASMA-LR Instrument During the Luna-27 Mission","authors":"A. E. Chumikov, V. S. Cheptsov, T. A. Abrahamyan","doi":"10.1134/S0038094624700436","DOIUrl":"10.1134/S0038094624700436","url":null,"abstract":"Determining water concentrations in the polar regions of the Moon is one of the priority tasks of a number of space missions and, in particular, the Luna-27 mission. The complex of scientific equipment of the Luna-27 spacecraft includes time-of-flight laser ionization mass spectrometer LASMA-LR, the main task of which is to analyze the elemental composition of the regolith at the landing site. The design and configuration of the flight instrument is adapted for the analysis of regolith and was not originally intended for the study of volatile compounds. However, due to the importance of determining the water content in regolith, we reviewed some approaches to analyzing samples during lunar missions and assessed the applicability of LASMA-LR and the laser ionization mass spectrometry method in general for identifying water in regolith. It has been established that using this instrument it is possible to detect water in regolith, including determining its state (chemically bound and unbound water). Moreover, the conditions for sampling the regolith and delivering it to the soil receiving device of the instrument are critically important for the analysis, since under the conditions of the lunar surface, sublimation of ice is possible before the samples are analyzed. This technique has advantages over some other methods of analyzing water and/or ice used in space experiments, and can be used in the study of a number of planets and bodies of the Solar System.","PeriodicalId":778,"journal":{"name":"Solar System Research","volume":"58 5","pages":"537 - 548"},"PeriodicalIF":0.6,"publicationDate":"2024-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142177744","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

Research Progress in High-Energy Electron Flux Prediction Methods in Geosynchronous Orbit 地球同步轨道高能电子通量预测方法的研究进展

IF 0.6 4区物理与天体物理

Solar System Research Pub Date : 2024-09-09 DOI: 10.1134/S0038094624700357

Ke Han, Ying Chu, Jie Wan, Cheng-gang Jin, De-quan Zheng, Peng E

{"title":"Research Progress in High-Energy Electron Flux Prediction Methods in Geosynchronous Orbit","authors":"Ke Han, Ying Chu, Jie Wan, Cheng-gang Jin, De-quan Zheng, Peng E","doi":"10.1134/S0038094624700357","DOIUrl":"10.1134/S0038094624700357","url":null,"abstract":"The increase in energetic electron flux is a complex nonlinear phenomenon with a profound impact on satellite operations in geosynchronous orbit. Previous research, conducted both locally and internationally, has developed models relying on extensive data to predict occurrences associated with the amplification of high-energy electron fluxes. This study conducts a comprehensive examination of significant research discoveries in the field, with a specific focus on selecting prediction factors and methods for designing forecast models. The study introduces key features of solar wind parameters and their correlation with high-energy electron fluxes, emphasizing the selection of forecast factors. Additionally, it highlights the attributes of geomagnetic indices and their relationship with solar wind parameters. Linear and nonlinear models are presented, with linear models categorized as single-input and multi-input, and nonlinear models classified as single-model design and fusion-model design. The study also explores shallow and deep models as distinct methodologies in nonlinear modeling. In conclusion, this study provides an overview of current research findings and approaches while offering insights into the future development patterns in this domain for the forthcoming term.","PeriodicalId":778,"journal":{"name":"Solar System Research","volume":"58 5","pages":"612 - 628"},"PeriodicalIF":0.6,"publicationDate":"2024-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142177748","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

Age Estimation of Young Asteroid Pairs 年轻小行星对的年龄估计

IF 0.6 4区物理与天体物理

Solar System Research Pub Date : 2024-08-01 DOI: 10.1134/S0038094624700473

V. S. Safronova, E. D. Kuznetsov

{"title":"Age Estimation of Young Asteroid Pairs","authors":"V. S. Safronova, E. D. Kuznetsov","doi":"10.1134/S0038094624700473","DOIUrl":"10.1134/S0038094624700473","url":null,"abstract":"In order to estimate the age, the work examined the probabilistic evolution of three young pairs of asteroids in close orbits: (87 887) 2000 SS286—(415 992) 2002 AT49, (320 025) 2007 DT76—(489 464) 2007 DP16, (21 436) Chaoyichi—(334 916) 2003 YK39. In the numerical simulation, along with gravitational disturbances, the Yarkovsky effect in the form of a secular drift of the orbital semimajor axis was taken into account. For each pair of asteroids, 25 evolution scenarios were considered, corresponding to different combinations of obliquities of the asteroids’ rotation axes and, correspondingly, different drift rates of the semimajor axes due to the Yarkovsky effect. For each asteroid, 1000 clones were generated. Age estimates were obtained based on analysis of moment distributions: (1) low relative-velocity close encounters of asteroids of pair to distances on the order of the Hill sphere at a relative speed of several units of the escape velocity and (2) achievement of minimum values of the Kholshevnikov metric, which characterizes the distance between orbits. The following age estimates for young asteroid pairs were obtained: (87 887) 2000 SS286 and (415 992) 2002 AT49 from 7.58 ± 0.04 to 8.80 ± 0.04 kyr; (320 025) 2007 DT76 and (489464) 2007 DP16 from 15.5 ± 1.0 to 58.6 ± 16.0 kyr; (21 436) Chaoyichi and (334 916) 2003 YK39 from 32.3 ± 0.1 to 102.6 ± 0.7 kyr.","PeriodicalId":778,"journal":{"name":"Solar System Research","volume":"58 6","pages":"732 - 744"},"PeriodicalIF":0.6,"publicationDate":"2024-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141881279","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

On the Chandler Period of Venus 关于金星的钱德勒周期

IF 0.6 4区物理与天体物理

Solar System Research Pub Date : 2024-08-01 DOI: 10.1134/S0038094624700448

D. O. Amorim, T. V. Gudkova

引用次数: 0

Earth-Like Models of the Internal Structure of Venus 金星内部结构的类地行星模型

IF 0.6 4区物理与天体物理

Solar System Research Pub Date : 2024-08-01 DOI: 10.1134/S0038094624700461

D. O. Amorim, T. V. Gudkova

引用次数: 0

On the Validity of the Pancake Models of the Falls of Cosmic Bodies in the Atmosphere 论宇宙天体在大气中坠落的薄饼模型的有效性

IF 0.6 4区物理与天体物理

Solar System Research Pub Date : 2024-08-01 DOI: 10.1134/S0038094624700485

V. V. Svettsov

{"title":"On the Validity of the Pancake Models of the Falls of Cosmic Bodies in the Atmosphere","authors":"V. V. Svettsov","doi":"10.1134/S0038094624700485","DOIUrl":"10.1134/S0038094624700485","url":null,"abstract":"Semianalytical pancake models published in the literature are considered, in which it is assumed that a low-strength, fragmented body, like a liquid, expands during flight in the atmosphere and, while maintaining a certain simple shape and increasing the cross-sectional area, decelerates at much higher altitudes than a strong body. Individual models differ in the rate of increase in the transverse size of the body. For comparison with the models, hydrodynamic simulations of falls of liquid bodies with a diameter of 40 m in the Earth’s atmosphere were carried out without taking into account ablation. Such bodies, before they begin to slow down significantly, break up into fragments. Unlike simple models, while the body remains coherent, it can take on very distorted shapes. Comparison of pancake models with the results of hydrodynamic modeling allows us to determine the most suitable models for assessing the behavior of asteroids in the atmosphere and evaluate the assumptions embedded in them. In hydrodynamic modeling taking into account ablation, as shown by the results published in other works, complete evaporation of the body can first occur and, only then, the braking of the vapor jet. In pancake models, complete evaporation means the disappearance of mass and a complete stop of motion. The theoretical basis of these models needs to be revised.","PeriodicalId":778,"journal":{"name":"Solar System Research","volume":"58 6","pages":"696 - 708"},"PeriodicalIF":0.6,"publicationDate":"2024-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141881281","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

Influence of Mantle Inelasticity on the Model Value of the Chandler Wobble Period of Mars 地幔非弹性对火星钱德勒摆动周期模型值的影响

IF 0.6 4区物理与天体物理

Solar System Research Pub Date : 2024-08-01 DOI: 10.1134/S0038094624700497

E. A. Kulik, T. V. Gudkova

引用次数: 0

Subsurface Water Ice Content in the Cabeus Crater According to Measurements by the LEND Instrument onboard the NASA LRO Orbital Mission 根据美国国家航空航天局 LRO 轨道飞行任务所搭载的 LEND 仪器测量的卡贝乌斯环形山地表下水冰含量

IF 0.6 4区物理与天体物理

Solar System Research Pub Date : 2024-08-01 DOI: 10.1134/S003809462470045X

M. L. Litvak, I. G. Mitrofanov, A. B. Sanin, M. V. Dyachkova

{"title":"Subsurface Water Ice Content in the Cabeus Crater According to Measurements by the LEND Instrument onboard the NASA LRO Orbital Mission","authors":"M. L. Litvak, I. G. Mitrofanov, A. B. Sanin, M. V. Dyachkova","doi":"10.1134/S003809462470045X","DOIUrl":"10.1134/S003809462470045X","url":null,"abstract":"The article presents the results of the analysis of data from the Russian neutron spectrometer LEND (Lunar Exploration Neutron Detector), installed aboard NASA’s lunar orbiter LRO (Lunar Reconnaissance Orbiter). An estimate of the content of subsurface water ice in the permanently shadowed region Cabeus-1, located inside the large Cabeus crater in the vicinity of the lunar south pole, has been obtained. The analysis used observations made with the LEND instrument from 2009 to 2023. It is shown that the surface neutron albedo in the vicinity and inside of Cabeus-1 correlates with the relief height and the distribution of average annual temperatures. The average subsurface water ice content over the entire Cabeus-1 region was estimated to be 0.49 ± 0.05% by mass fraction. The maximum value of about 0.7% is observed at the very bottom of the crater on the surface area where the minimum average annual temperature was recorded. This site coincides with the site of the LCROSS (Lunar Crater Observation and Sensing Satellite) impact experiment, which confirmed a significant amount of water ice in the near-surface material of the Moon.","PeriodicalId":778,"journal":{"name":"Solar System Research","volume":"58 6","pages":"629 - 639"},"PeriodicalIF":0.6,"publicationDate":"2024-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141881282","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

Change in Plasma Composition During the Rotation of the Magnetopause of Mars 火星磁极旋转过程中等离子体成分的变化

IF 0.6 4区物理与天体物理

Solar System Research Pub Date : 2024-07-12 DOI: 10.1134/S0038094624700254

O. L. Vaisberg, A. Yu. Shestakov, R. N. Zhuravlev, D. N. Morozova, A. Ramazan

{"title":"Change in Plasma Composition During the Rotation of the Magnetopause of Mars","authors":"O. L. Vaisberg, A. Yu. Shestakov, R. N. Zhuravlev, D. N. Morozova, A. Ramazan","doi":"10.1134/S0038094624700254","DOIUrl":"10.1134/S0038094624700254","url":null,"abstract":"High temporal resolution of measurements of the magnetic field and plasma of Mars is provided by observations on the Mars Atmosphere and Volatile Evolution (MAVEN; Jakosky et al., 2015) satellite, making it possible to analyze thin layers of the plasma envelope of Mars. This paper describes the magnetic structure associated with the daytime Martian magnetopause. It was shown that the solar wind passing through the shock wave on the dayside of Mars does not directly interact with the Martian ionosphere. A layer of plasma and magnetic field 200–300 km thick forms the daytime magnetosphere, which is the region between the magnetosheath and the ionosphere (Vaisberg and Shuvalov, 2020). There are two types of daytime magnetosphere: (1) the more common type of magnetosphere consists of heated and accelerated O+ ions and ({text{O}}_{2}^{ + }), located between the ionosphere and the flowing hot stream of Mars; (2) another type of daytime magnetosphere consists of accelerated O+ ions and ({text{O}}_{2}^{ + }) in the magnetosheath, where they form a continuing accelerated beam, forming a plume. Between the magnetosheath and the magnetosphere there is a magnetic structure that rotates, almost without changing its size. This structure is located in the second part of the np/(np + nh) transition from ~1 to ~10–2. The transition between the magnetosheath and magnetosphere occurs smoothly, both in energy density and in ion composition, with a decrease in the proton flux and an increase in the heavy ion flux.","PeriodicalId":778,"journal":{"name":"Solar System Research","volume":"58 4","pages":"409 - 418"},"PeriodicalIF":0.6,"publicationDate":"2024-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141612742","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

Natural Alloys of the Cu–Ni System from Impactites of the Lonar Crater (India) and Lunar Regolith 印度隆纳尔陨石坑撞击岩和月球岩石中的铜镍系天然合金

IF 0.6 4区物理与天体物理

Solar System Research Pub Date : 2024-07-12 DOI: 10.1134/S0038094624700266

T. A. Gornostaeva, P. M. Kartashov, A. V. Mokhov, A. P. Rybchuk, A. T. Basilevsky

引用次数: 0