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Internal Structure of the Magnetic Funnel in the Polar Heliosphere 极地日光层磁性漏斗的内部结构
IF 0.6 4区 物理与天体物理
Solar System Research Pub Date : 2024-11-21 DOI: 10.1134/S003809462460104X
R. A. Kislov
{"title":"Internal Structure of the Magnetic Funnel in the Polar Heliosphere","authors":"R. A. Kislov","doi":"10.1134/S003809462460104X","DOIUrl":"10.1134/S003809462460104X","url":null,"abstract":"<p>According to data obtained by the <i>Ulysses</i> spacecraft in 2017, high-latitude current sheets have been discovered in the polar heliosphere. They have been observed during solar activity minima in 1994 and 2007 at a distance of 2–3 AU above the south pole of the Sun. The discovered current sheets formed a conical surface rotating as a whole around the Sun’s rotation axis with the Carrington period. In this study, a semianalytical MHD model of conical current sheets is developed. The internal structure of heliospheric region bounded by these sheets—a magnetic funnel with reduced solar wind speed and the plasma beta—has been studied. Solutions corresponding to different intersections of the funnel by the <i>Ulysses</i> spacecraft have been obtained under different conditions near the Sun. The conditions under which the dimensions of the funnel agree with observations are clarified. For the first time, situations are treated in which the plasma and magnetic field parameters inside the funnel vary quasi-periodically in space. The study of the magnetic funnel structure challenges new issues for solar physics, whose solutions will enable a better understanding of the physical conditions on the early Earth and the features of the primary biosphere formation.</p>","PeriodicalId":778,"journal":{"name":"Solar System Research","volume":"58 1 supplement","pages":"S105 - S114"},"PeriodicalIF":0.6,"publicationDate":"2024-11-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142679698","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
Drake Formula and Exoplanets 德雷克公式与系外行星
IF 0.6 4区 物理与天体物理
Solar System Research Pub Date : 2024-11-21 DOI: 10.1134/S0038094624600756
D. D. Sokolov
{"title":"Drake Formula and Exoplanets","authors":"D. D. Sokolov","doi":"10.1134/S0038094624600756","DOIUrl":"10.1134/S0038094624600756","url":null,"abstract":"<p>The Drake formula or equation represents the best known way of introducing the question of the distribution of life and intelligence in the Universe into the framework of quantitative science. A generalization of the Drake equation is presented in the form of a partial differential equation that includes the effects of the transfer of life elements from one exoplanetary system to another. Possible implications of this equation for assessing the prospects for detecting life beyond Earth are discussed.</p>","PeriodicalId":778,"journal":{"name":"Solar System Research","volume":"58 1 supplement","pages":"S26 - S29"},"PeriodicalIF":0.6,"publicationDate":"2024-11-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142679828","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
Origin of Life on Earth and the Space Project Luna-28 地球生命的起源和太空计划露娜-28
IF 0.6 4区 物理与天体物理
Solar System Research Pub Date : 2024-11-21 DOI: 10.1134/S0038094624601117
I. G. Mitrofanov
{"title":"Origin of Life on Earth and the Space Project Luna-28","authors":"I. G. Mitrofanov","doi":"10.1134/S0038094624601117","DOIUrl":"10.1134/S0038094624601117","url":null,"abstract":"<p>The Russian space project with the automatic lunar station (ALS) <i>Luna-28</i> is designed to deliver samples of lunar polar regolith to Earth. It is known that the regolith in the vicinity of the lunar poles may contain several percent by weight of water ice and other volatile compounds of cosmic origin. A significant portion of the lunar water could have been delivered to the Moon by comets. It is known that cometary water contains organic compounds, some of which have a complex prebiological structure. Similar comets collided with the Earth in the distant past and also delivered organic compounds of cosmic origin to our planet. According to the panspermia hypothesis, such compounds in the Earth’s primordial ocean could have initiated the process of the emergence of initial forms of primitive life. On the Moon, similar cometary organic matter may be preserved in pristine form in polar permafrost. Studying samples of the polar material delivered in the <i>Luna-28</i> ALS return capsule in terrestrial laboratories will allow experimental verification of the presence or absence of extraterrestrial life spores in it.</p>","PeriodicalId":778,"journal":{"name":"Solar System Research","volume":"58 1 supplement","pages":"S72 - S74"},"PeriodicalIF":0.6,"publicationDate":"2024-11-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142679688","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 Spirin’s Concept of the RNA World 斯皮林的 RNA 世界观
IF 0.6 4区 物理与天体物理
Solar System Research Pub Date : 2024-11-21 DOI: 10.1134/S003809462460094X
A. B. Chetverin, E. V. Chetverina
{"title":"The Spirin’s Concept of the RNA World","authors":"A. B. Chetverin,&nbsp;E. V. Chetverina","doi":"10.1134/S003809462460094X","DOIUrl":"10.1134/S003809462460094X","url":null,"abstract":"<p>The paper summarizes the main provisions of Alexander Spirin’s concept on the possible role of RNA, molecular machines, and molecular colonies in the emergence of life, including (1) the role of the capability of polyribonucleotides of spontaneous rearrangements and recombinations in the generation of RNA molecules and development of their structure, as well as in the early replication of RNA; (2) the principle of operation of molecular machines powered by the energy of Brownian motion and the need for their emergence to solve the problem of unwinding double-stranded molecules formed as a result of the complementary copying of RNA; (3) the role of molecular colonies formed during the replication of RNA in porous media as a mode of compartmentalization and as a prerequisite for the evolution in the precellular RNA world.</p>","PeriodicalId":778,"journal":{"name":"Solar System Research","volume":"58 1 supplement","pages":"S9 - S17"},"PeriodicalIF":0.6,"publicationDate":"2024-11-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142679824","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
Porous Dust Clusters in Protoplanetary Disks as Catalysts for Formation of Complex Preorganic Compounds 原行星盘中的多孔尘簇是形成复杂前有机化合物的催化剂
IF 0.6 4区 物理与天体物理
Solar System Research Pub Date : 2024-11-21 DOI: 10.1134/S0038094624600938
A. V. Rusol
{"title":"Porous Dust Clusters in Protoplanetary Disks as Catalysts for Formation of Complex Preorganic Compounds","authors":"A. V. Rusol","doi":"10.1134/S0038094624600938","DOIUrl":"10.1134/S0038094624600938","url":null,"abstract":"<p>Computer modeling has shown that, during the collisional evolution of a solid-state component in gas–dust protoplanetary disks, porous dust clusters of widely ranging sizes are formed. Clusters of this kind have a well-developed internal structure that is topologically similar to the structure of porous catalysts, adsorbents, and carriers used in the organic synthesis technology. On the other hand, observational data currently obtained by such instruments as the Atacama Large Millimeter/submillimeter Array (ALMA) show that complex preorganic compounds rather than only water and volatiles are present in protoplanetary disks. This suggests the possibility that, in protoplanetary disks, there are mechanisms of capturing complex chemical compounds by porous dust clusters and transporting these compounds to warmer regions during migration. When getting to warmer regions of protoplanetary disks, dust clusters undergo a change in the pore space, which may increase the surface holding the captured compounds and, hence, intensify their reactivity.</p>","PeriodicalId":778,"journal":{"name":"Solar System Research","volume":"58 1 supplement","pages":"S40 - S49"},"PeriodicalIF":0.6,"publicationDate":"2024-11-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142679826","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
Some Thoughts on Discoveries in Astrobiology 关于天体生物学发现的一些想法
IF 0.6 4区 物理与天体物理
Solar System Research Pub Date : 2024-11-21 DOI: 10.1134/S0038094624601002
A. Yu. Rozanov
{"title":"Some Thoughts on Discoveries in Astrobiology","authors":"A. Yu. Rozanov","doi":"10.1134/S0038094624601002","DOIUrl":"10.1134/S0038094624601002","url":null,"abstract":"<p>Analysis of meteorites and terrestrial rocks using modern bacterial paleontology methods leads to the conclusion that Life did not originate on Earth, but originated in the form of a protogenome during the formation of the Solar System. Micron and submicron organisms have existed since the origin of the Solar System to the Phanerozoic and into the Phanerozoic on Earth. The study of this organic world can seriously change the understanding of the general development of the living world and the patterns of its evolution, as well as our understanding of the volume of minerals associated with the Precambrian.</p>","PeriodicalId":778,"journal":{"name":"Solar System Research","volume":"58 1 supplement","pages":"S4 - S8"},"PeriodicalIF":0.6,"publicationDate":"2024-11-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142679825","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
Search for Extraterrestrial Life: the “Goldilocks Zone” vs. the “Snow Maiden Zone” 寻找地外生命："金发女郎区 "与 "雪姑娘区"
IF 0.6 4区 物理与天体物理
Solar System Research Pub Date : 2024-11-21 DOI: 10.1134/S0038094624601099
M. V. Ragul’skaya
{"title":"Search for Extraterrestrial Life: the “Goldilocks Zone” vs. the “Snow Maiden Zone”","authors":"M. V. Ragul’skaya","doi":"10.1134/S0038094624601099","DOIUrl":"10.1134/S0038094624601099","url":null,"abstract":"<p>The paper examines two habitable zones with different physical conditions on exoplanets: planets with liquid water on the surface and conditions close to Earth’s (“Goldilocks Zone”), and cold worlds with icy surfaces and subsurface oceans (“Snow Maiden Zone”). The mechanisms of exchange of matter and energy between subglacial oceans and the surrounding space are discussed. It is noted that the biospheres of icy worlds with internal oceans are better protected from unfavorable external cosmic conditions. Subglacial biospheres are weakly dependent on the radiation intensity and flare activity of their parent stars, and the number of planets in the Universe with the physical conditions of the icy Snow Maiden Zone significantly exceeds the number of planets in the very limited Goldilocks Zone. It can be assumed that it is the biospheres of icy oceanic worlds that are much more widespread in the Universe compared to terrestrial-type biospheres.</p>","PeriodicalId":778,"journal":{"name":"Solar System Research","volume":"58 1 supplement","pages":"S30 - S39"},"PeriodicalIF":0.6,"publicationDate":"2024-11-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142679689","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
Survival and Transfer of Microorganisms beyond the Earth: To What Extent are Microorganisms Tolerant to External Influences? 微生物在地球之外的生存和转移：微生物在多大程度上能够承受外界影响？
IF 0.6 4区 物理与天体物理
Solar System Research Pub Date : 2024-11-21 DOI: 10.1134/S0038094624601087
V. S. Cheptsov
{"title":"Survival and Transfer of Microorganisms beyond the Earth: To What Extent are Microorganisms Tolerant to External Influences?","authors":"V. S. Cheptsov","doi":"10.1134/S0038094624601087","DOIUrl":"10.1134/S0038094624601087","url":null,"abstract":"<p>The study of microorganism tolerance to extreme influences is an integral part of astrobiology. Despite the large number of works in this field, the limits of maintaining viability and activity remain uncertain, and they are probably much wider than the currently known boundaries, especially taking into account the adaptive capabilities of microorganisms. In the vast majority of astrobiological experiments, a very limited set of organisms and the impact of a small number of factors are studied. It seems natural that research gradually develops from modeling simple systems (pure cultures and single-factor impacts) to more complex ones, closer to hypothetical extraterrestrial ecosystems. Nevertheless, studies of the most complex systems (microbial communities under the complex action of extraterrestrial conditions in laboratory and space experiments) are still extremely few in number. At the same time, some features of multifactor impacts and the response of complex microbial systems to such impacts are often given little attention. This paper attempts to summarize some data on the tolerance of microorganisms to extreme factors of extraterrestrial space, as well as to outline a number of insufficiently studied promising fields of astrobiological research.</p>","PeriodicalId":778,"journal":{"name":"Solar System Research","volume":"58 1 supplement","pages":"S87 - S104"},"PeriodicalIF":0.6,"publicationDate":"2024-11-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142679690","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
Astronomical Aspects of the Origin and Development of Life 生命起源与发展的天文学方面
IF 0.6 4区 物理与天体物理
Solar System Research Pub Date : 2024-11-21 DOI: 10.1134/S0038094624601300
V. N. Obridko, M. V. Ragul’skaya, V. N. Snytnikov
{"title":"Astronomical Aspects of the Origin and Development of Life","authors":"V. N. Obridko,&nbsp;M. V. Ragul’skaya,&nbsp;V. N. Snytnikov","doi":"10.1134/S0038094624601300","DOIUrl":"10.1134/S0038094624601300","url":null,"abstract":"<p>The concept of the origin of life outside the Earth is currently one of the dominant directions of theoretical, experimental and observational scientific research. The problem of the origin of life is interdisciplinary and includes the most pressing issues of astronomy, biology, paleontology, organic chemistry and other sciences. This issue of the journal is devoted to the astronomical aspects of the origin and development of life.</p>","PeriodicalId":778,"journal":{"name":"Solar System Research","volume":"58 1 supplement","pages":"S1 - S3"},"PeriodicalIF":0.6,"publicationDate":"2024-11-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142679820","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
Improved Numerical Model of Motion of Artificial Satellites of the Moon and its Application in Research Features of the Dynamics of Circumlunar Objects 改进的月球人造卫星运动数值模型及其在环月天体动力学特征研究中的应用
IF 0.6 4区 物理与天体物理
Solar System Research Pub Date : 2024-10-15 DOI: 10.1134/S0038094624700539
N. A. Popandopulo, A. G. Alexandrova, N. A. Kucheryavchenko, T. V. Bordovitsyna, D. S. Krasavin
{"title":"Improved Numerical Model of Motion of Artificial Satellites of the Moon and its Application in Research Features of the Dynamics of Circumlunar Objects","authors":"N. A. Popandopulo,&nbsp;A. G. Alexandrova,&nbsp;N. A. Kucheryavchenko,&nbsp;T. V. Bordovitsyna,&nbsp;D. S. Krasavin","doi":"10.1134/S0038094624700539","DOIUrl":"10.1134/S0038094624700539","url":null,"abstract":"<p>The paper describes the improvements made by the authors to the previously published Numerical Model of the Motion of Artificial Lunar Satellites (ALS). The results of a study of the dynamics of cislunar objects obtained by numerical modeling are presented. It is shown that the short lifespan of low-flying objects in orbits, revealed by a number of authors, is explained solely by the influence of the complex gravitational field of the Moon, primarily the radial component of the force acting on the satellites. The features of the influence of light pressure (LP) on cislunar objects are considered. It is shown that LP expands the range of action of apsidal-nodal resonances that arise in the movement of cislunar objects.</p>","PeriodicalId":778,"journal":{"name":"Solar System Research","volume":"58 6","pages":"780 - 800"},"PeriodicalIF":0.6,"publicationDate":"2024-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142438722","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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