Solar System Research最新文献_第6页

On Anomalous Dissipation in Dusty Plasma in the Vicinity of Cometary Nuclei and Active Asteroids 彗星核和活动小行星附近尘埃等离子体的异常耗散

IF 0.8 4区物理与天体物理

Solar System Research Pub Date : 2026-02-25 DOI: 10.1134/S003809462560115X

A. Yu. Dubinsky, Yu. S. Reznichenko, A. P. Golub’, S. I. Popel

引用次数: 0

Surface Morphology of the Floor of the Cabeus Lunar Polar Crater Cabeus月球极地陨石坑底部的表面形态

IF 0.8 4区物理与天体物理

Solar System Research Pub Date : 2026-02-25 DOI: 10.1134/S0038094625600982

A. T. Basilevsky, A. S. Krasilnikov, Yuan Li, G. G. Michael

{"title":"Surface Morphology of the Floor of the Cabeus Lunar Polar Crater","authors":"A. T. Basilevsky, A. S. Krasilnikov, Yuan Li, G. G. Michael","doi":"10.1134/S0038094625600982","DOIUrl":"10.1134/S0038094625600982","url":null,"abstract":"This study examines the surface morphology within the lunar polar crater Cabeus, where the spent Atlas V Centaur rocket stage was intentionally impacted and the resulting plume was spectroscopically analyzed for water vapor and other volatiles (the LCROSS experiment). Cabeus is a pre-Nectarian impact crater approximately 100 km in diameter, located in the lunar highlands. We conducted a photogeological analysis of a ShadowCam image mosaic covering the permanently shadowed portion of the crater’s floor and inner slope, as well as a portion of the floor outside the shadowed zone. It is shown that the morphology of the Cabeus crater floor, both within and outside the shadowed region, is dominated by the presence of craters, presumably of impact origin, with diameters ranging from tens to several hundred meters. A portion of these craters exhibit a lobate rims, which is considered indicative of significant water ice content in the target material. The frequency of craters with lobate rims does not differ significantly between the shadowed and nonshadowed portions of the Cabeus floor. On the inner slope of Cabeus, the density of superposed small craters is much lower, and the surface exhibits a “elephant skin” texture. The presence of small craters with lobate rims, combined with the results of the LCROSS experiment, suggests that the floors of polar craters may become viable sites for the extraction of volatiles, primarily H2O. This water could be used to support lunar bases or, when split by solar energy into hydrogen and oxygen, serve as rocket fuel.","PeriodicalId":778,"journal":{"name":"Solar System Research","volume":"60 1","pages":""},"PeriodicalIF":0.8,"publicationDate":"2026-02-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147342068","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

Astroecology as a Promising Natural Science Field 天体生态学作为一个有前途的自然科学领域

IF 0.8 4区物理与天体物理

Solar System Research Pub Date : 2026-02-25 DOI: 10.1134/S0038094625601276

O. R. Kotsyurbenko, V. P. Badya, P. I. Besogonova, D. M. Lipatov, S. A. Teslenok

{"title":"Astroecology as a Promising Natural Science Field","authors":"O. R. Kotsyurbenko, V. P. Badya, P. I. Besogonova, D. M. Lipatov, S. A. Teslenok","doi":"10.1134/S0038094625601276","DOIUrl":"10.1134/S0038094625601276","url":null,"abstract":"Astroecology is a new scientific discipline that addresses environmental issues at a new biosystemic level, including outer space. Although a branch of astrobiology, astroecology already has its own distinct structure and is developing in accordance with modern trends in the development of human civilization characterized by the involvement of various natural science disciplines in the study of cosmic phenomena. Using the theoretical aspects and methodology of studying the terrestrial biosphere as a foundation, astroecology explores its interaction with outer space within the concept of the metabiosphere. Its primary subjects of study include the formation of ecosystem interactions in both artificial model systems and hypothetical extraterrestrial systems, as well as the fundamental methods of space exploration of terrestrial ecosystems and their application to the methodology of searching for extraterrestrial life. At the same time, all discoveries within astroecology will inevitably have significant implications for terrestrial sciences, given the development of new conceptual approaches and new methodologies for solving scientific problems. This article presents astroecology as an actively developing science, whose area of scientific interest and its interaction with related disciplines are constantly evolving, and the demand for relevant specialists will steadily increase.","PeriodicalId":778,"journal":{"name":"Solar System Research","volume":"60 2","pages":""},"PeriodicalIF":0.8,"publicationDate":"2026-02-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147341551","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

High-Frequency Doppler Shift Oscillations and Their Damping in Transition Region Bright Point 高频多普勒频移振荡及其在过渡区亮点处的阻尼

IF 0.8 4区物理与天体物理

Solar System Research Pub Date : 2026-02-25 DOI: 10.1134/S0038094625600945

D. Yuan, R. Sadeghi, E. Tavabi

{"title":"High-Frequency Doppler Shift Oscillations and Their Damping in Transition Region Bright Point","authors":"D. Yuan, R. Sadeghi, E. Tavabi","doi":"10.1134/S0038094625600945","DOIUrl":"10.1134/S0038094625600945","url":null,"abstract":"This study presents a long short-term memory (LSTM) neural network for classifying BPs in the solar chromosphere and transition region as oscillatory or nonoscillatory, including damped oscillatory BPs using the Interface Region Imaging Spectrograph (IRIS). The LSTM network, which has 500 hidden units, was trained using the full spectral profiles of the Mg II h line at 2796.354 Å, the Mg II k line at 2803.531 Å, and the Si IV line at 1394 Å. These lines comprise both the blue shifted and redshifted components. Integrating spectral diagnostics with manually annotated datasets allowed the model to achieve an average classification accuracy of 86% on a test set of 20 000 BPs held out from 20 IRIS datasets. Wavelet analysis and a damping model estimated decay times ranging from 101 to 265 s and maximum Doppler velocities ranging from 20 to 175 kilometers per second. A key finding was the 25–40 s temporal lag in the damping of Si IV oscillations compared to Mg II and between active region (AR) and coronal hole (CH). These lags suggest different wave-plasma interactions in network and internetwork areas. Simultaneous 1400 Å SJIs ensured damping within BPs. Swarm charts revealed regional variations, showing higher velocities in the AR internetwork (175 km/s) than in the CH (49 km/s). These findings impose further constraints on energy dissipation and wave propagation processes, enriching our understanding of solar atmospheric dynamics through deep learning.","PeriodicalId":778,"journal":{"name":"Solar System Research","volume":"60 1","pages":""},"PeriodicalIF":0.8,"publicationDate":"2026-02-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147342012","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

Effect of Sodium Perchlorate on the Viability of Bacillus subtilis in Conditions of Available Water Shortage 高氯酸钠对有效缺水条件下枯草芽孢杆菌活力的影响

IF 0.8 4区物理与天体物理

Solar System Research Pub Date : 2026-02-25 DOI: 10.1134/S0038094625601288

P. M. Sazonova, V. S. Cheptsov, A. A. Belov

{"title":"Effect of Sodium Perchlorate on the Viability of Bacillus subtilis in Conditions of Available Water Shortage","authors":"P. M. Sazonova, V. S. Cheptsov, A. A. Belov","doi":"10.1134/S0038094625601288","DOIUrl":"10.1134/S0038094625601288","url":null,"abstract":"Perchlorate has been detected in the surface layer of Martian regolith and is believed to be globally distributed on the planet. Perchlorate has an inhibitory effect on microorganisms, however, due to its high hygroscopicity, at low water vapor pressure in the atmosphere, it is capable of forming solutions that remain liquid over a wide range of temperatures, creating the potential to develop and maintain cellular structures. However, perchlorate solutions cannot exist permanently in the conditions of modern Mars. At the same time, it is unknown whether perchlorate affects the survival of microorganisms after the solutions dry out, between periods of liquid water formation. We studied the effect of NaClO4 in concentrations up to 25% on the viability of Bacillus subtilis when there is a shortage of available moisture. Bacterial cells were immobilized in kaolinite, dried, mixed with sodium perchlorate and chloride, and stored at water activity <0.2 for two years. It was found that perchlorate in the absence of available water does not affect the number of viable microorganisms but leads to an increase in the potential metabolic activity of cells, which is probably a response to stress. The data obtained indicate the possibility of survival of terrestrial microorganisms between periods of formation of liquid perchlorate solutions on Mars.","PeriodicalId":778,"journal":{"name":"Solar System Research","volume":"60 2","pages":""},"PeriodicalIF":0.8,"publicationDate":"2026-02-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147341549","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

Cometary Outbursts as a Source of Dust at Distances R > 40 AU in the Solar System 彗星爆发作为太阳系中距离R - 50 - 40天文单位的尘埃来源

IF 0.8 4区物理与天体物理

Solar System Research Pub Date : 2026-02-25 DOI: 10.1134/S0038094625601033

A. K. Pavlov, N. V. Liashenko, A. Yu. Merkulova

引用次数: 0

Phase-Polarization Analysis of Asteroids 13 Egeria and 511 Davida: New Low Phase Angle Observations and C-Type Comparisons 小行星13 Egeria和511 Davida的相位偏振分析：新的低相角观测和c型比较

IF 0.8 4区物理与天体物理

Solar System Research Pub Date : 2026-02-19 DOI: 10.1134/S0038094625600891

B. Prasad, H. S. Das, T. K. Dhar, G. B. Choudhury, J. C. Pandey, B. J. Medhi, R. S. Paul, D. Paul, B. Barman, S. Nath Mazumdar, B. Goswami, N. N. Devi

{"title":"Phase-Polarization Analysis of Asteroids 13 Egeria and 511 Davida: New Low Phase Angle Observations and C-Type Comparisons","authors":"B. Prasad, H. S. Das, T. K. Dhar, G. B. Choudhury, J. C. Pandey, B. J. Medhi, R. S. Paul, D. Paul, B. Barman, S. Nath Mazumdar, B. Goswami, N. N. Devi","doi":"10.1134/S0038094625600891","DOIUrl":"10.1134/S0038094625600891","url":null,"abstract":"We present a comprehensive polarimetric analysis of the main-belt asteroids 13 Egeria and 511 Davida, based on new R-band observations combined with previously published data in the R, V, and G bands. The new observations have been conducted using the 1.04 m Sampurnanand Optical Telescope at phase angles of (alpha = 5.52^circ ) for Egeria and (alpha = 2.21)° for Davida, covering a previously unexplored region of the phase–polarization curve for both objects. At these low phase angles, we have detected significant negative polarization: ({{P}_{{text{r}}}} = - 1.72 pm 0.06) for Egeria and ({{P}_{{text{r}}}} = - 0.91 pm 0.10) for Davida. These measurements provide valuable constraints within the negative polarization branch and significantly improve the overall phase–polarization profiles of the two asteroids. The inclusion of these new data enables more accurate determinations of key polarimetric parameters, including minimum polarization (({{P}_{{{text{min}}}}})), inversion angle ({{alpha }_{{{text{inv}}}}}), and polarimetric slope (left( h right)). To maintain internal consistency, our analysis focuses on R-band observations supplemented by multi-band archival data. A comparative study with other well-characterized C-type asteroids reveals both shared features and subtle differences, potentially indicative of variations in surface texture or composition. These findings enhance our understanding of the surface scattering properties of Egeria and Davida and contribute to the broader characterization of C-type asteroid diversity, highlighting the importance of polarimetric studies for understanding surface properties and regolith characteristics within taxonomic groups, offering new insights into the nature of primitive bodies in the solar system.","PeriodicalId":778,"journal":{"name":"Solar System Research","volume":"60 1","pages":""},"PeriodicalIF":0.8,"publicationDate":"2026-02-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147340778","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

Magnetic Properties as Additional Meteorite Classifiers 磁性作为额外的陨石分类器

IF 0.8 4区物理与天体物理

Solar System Research Pub Date : 2026-02-19 DOI: 10.1134/S003809462560088X

G. P. Markov, R. Zhang, V. E. Pavlov

引用次数: 0

Erratum to: Depth Distribution of Chlorine Content for Different Geological Areas in the Crater Gale According to DAN and APXS Instruments 根据DAN和APXS仪器对陨石坑大风中不同地质区域氯含量深度分布的勘误

IF 0.8 4区物理与天体物理

Solar System Research Pub Date : 2026-02-10 DOI: 10.1134/S0038094626010016

M. L. Litvak, A. E. Romanova, I. G. Mitrofanov, M. V. Dyachkova, D. I. Lisov, S. Yu. Nikiforov

引用次数: 0

Hot Fraction of Oxygen Atoms in the Polar Upper Atmosphere of the Earth 地球极地上层大气中氧原子的热部分

IF 0.8 4区物理与天体物理

Solar System Research Pub Date : 2026-02-09 DOI: 10.1134/S0038094625600854

V. I. Shematovich

{"title":"Hot Fraction of Oxygen Atoms in the Polar Upper Atmosphere of the Earth","authors":"V. I. Shematovich","doi":"10.1134/S0038094625600854","DOIUrl":"10.1134/S0038094625600854","url":null,"abstract":"The hot oxygen geocorona is an integral and dynamic component in the polar regions of the Earth’s upper atmosphere. Its formation is determined by such sources of suprathermal oxygen atoms as the precipitation of high-energy auroral electrons and reactions of exothermic atmospheric chemistry, and its evolution is controlled by kinetic processes of thermalization and transport of suprathermal O atoms under conditions far from local thermodynamic equilibrium. In this study, the process of dissociation of molecular oxygen by auroral electrons has been studied in detail for the first time and its important contribution to the formation of the fraction of hot oxygen atoms in the polar upper atmosphere of the Earth has been established, since it is several times greater in magnitude than the contribution of the reactions of dissociative recombination of molecular ions usually taken into account in previous models of the oxygen geocorona, and is comparable in magnitude to the contribution of exothermic reactions of atmospheric chemistry. The author compared the altitude profile of the hot oxygen numerical density obtained in the calculations with the predictions of the empirical atmospheric model NRLMSIS-00. It was found that at altitudes near the exobase of ~500–600 km, the concentrations of “anomalous” oxygen predicted by the empirical model are close in magnitude to the calculated model concentrations of the hot fraction of atomic oxygen. This circumstance confirms the necessity of taking into account the hot fraction of oxygen in calculations of atmospheric drag of satellites in the polar regions of the Earth’s upper atmosphere.","PeriodicalId":778,"journal":{"name":"Solar System Research","volume":"60 1","pages":""},"PeriodicalIF":0.8,"publicationDate":"2026-02-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147337854","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