Space Science Reviews最新文献

{"title":"Initial Conditions of Planet Formation: Time Constraints from Small Bodies and the Lifetime of Reservoirs in the Solar Protoplanetary Disk.","authors":"Maria Schönbächler, Audrey Bouvier, Noriko T Kita, Thomas S Kruijer","doi":"10.1007/s11214-025-01216-z","DOIUrl":"10.1007/s11214-025-01216-z","url":null,"abstract":"<p><p>This review explores the timescales of the initial phase of planet formation, from nebular dust (CAIs and chondrules) to planetesimal accretion and differentiation, using evidence from meteorite research. Aluminium-Mg systematics of CAIs indicate either an extended period of CAI formation (∼0.3 Ma) or an initial ²⁶Al heterogeneity, with evidence supporting a homogeneous ²⁶Al abundance in the protoplanetary disk. Thermal and aqueous alteration on the parent body can disturb the U-Pb and Al-Mg chronometers in chondrules. Focusing on relatively robust isochron data from plagioclase of pristine (types ≤3.05) chondrites indicates a shift in chondrule formation locations, moving from the inner to the outer disk over time. Ages of basaltic achondrites show that silicate differentiation on small bodies was well underway within the first few million years (Ma) of our solar system. Their age record, however, reveals inconsistencies between different chronometers, partly caused by (i) secondary disturbances due to thermal metamorphism, aqueous alteration, or impacts, (ii) the presence of xenolithic minerals, and (iii) potentially variable initial ²⁶Al abundances due to disturbances at the mineral scale. Nucleosynthetic isotope data indicate that parent bodies of iron and stony meteorites formed in two distinct regions within the protoplanetary disk: the inner, non-carbonaceous (NC) and the outer, carbonaceous (CC) region. Based on Hf-W chronometry it has been demonstrated that NC and CC parent bodies of magmatic iron meteorites segregated their cores within ∼1-3 Ma after CAI formation, implying that parent body accretion occurred within <1 Ma in both reservoirs. Combining accretion ages with nucleosynthetic data further reveals that, at first order, NC and CC reservoirs in the solar protoplanetary disk were established within 1 Ma and existed over several Ma with limited exchange between them. In the CR chondrite accretion region of the disk, planetary bodies formed over at least 3 Ma, while in most other regions, formation spanned at least 1 Ma, with minimal changes in nucleosynthetic isotope compositions. Aerodynamical size sorting of dust likely introduced or amplified some of these variations.</p>","PeriodicalId":21902,"journal":{"name":"Space Science Reviews","volume":"221 8","pages":"97"},"PeriodicalIF":7.4,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12534327/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145329869","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Outstanding Questions and Future Research on Magnetic Reconnection.","authors":"R Nakamura, J L Burch, J Birn, L-J Chen, D B Graham, F Guo, K-J Hwang, H Ji, Y V Khotyaintsev, Y-H Liu, M Oka, D Payne, M I Sitnov, M Swisdak, S Zenitani, J F Drake, S A Fuselier, K J Genestreti, D J Gershman, H Hasegawa, M Hoshino, C Norgren, M A Shay, J R Shuster, J E Stawarz","doi":"10.1007/s11214-025-01143-z","DOIUrl":"10.1007/s11214-025-01143-z","url":null,"abstract":"<p><p>This short article highlights unsolved problems of magnetic reconnection in collisionless plasma. Advanced in-situ plasma measurements and simulations have enabled scientists to gain a novel understanding of magnetic reconnection. Nevertheless, outstanding questions remain concerning the complex dynamics and structures in the diffusion region, cross-scale and regional couplings, the onset of magnetic reconnection, and the details of particle energization. We discuss future directions for magnetic reconnection research, including new observations, new simulations, and interdisciplinary approaches.</p>","PeriodicalId":21902,"journal":{"name":"Space Science Reviews","volume":"221 1","pages":"17"},"PeriodicalIF":9.1,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11814039/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143415323","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The Tandem Reconnection and Cusp Electrodynamics Reconnaissance Satellites (TRACERS) Mission.","authors":"D M Miles, C A Kletzing, S A Fuselier, K A Goodrich, J W Bonnell, S Bounds, H Cao, I H Cairns, L J Chen, I W Christopher, K Cleveland, H K Connor, D Crawford, J Dolan, J C Dorelli, R Dvorsky, M G Finley, R H W Friedel, J S Halekas, G B Hospodarsky, A N Jaynes, J Labelle, Y Lin, M Øieroset, S M Petrinec, M L Phillips, B Powers, R Prasad, A Rospos, O Santolik, R J Strangeway, K J Trattner, A Washington","doi":"10.1007/s11214-025-01184-4","DOIUrl":"10.1007/s11214-025-01184-4","url":null,"abstract":"<p><p>The overarching science goal of the Tandem Reconnection And Cusp Electrodynamics Reconnaissance Satellites (TRACERS) mission is to connect the cusp to the magnetosphere by discovering how spatial or temporal variations in magnetic reconnection drive cusp dynamics. This goal will be achieved with a simple mission design comprising two identical small spacecraft in identical low-Earth orbits in a follow-the-leader configuration. TRACERS will make repeated measurements in the cusp for a twelve-month primary mission using plasma and field instruments. These data will be analyzed using established dual-spacecraft techniques and supported by modeling that ensures science closure on the objectives. The TRACERS team leverages hardware collaborations from the University of Iowa, Southwest Research Institute, University of California Los Angeles, University of California Berkeley, and Millennium Space Systems. The larger science team consists of experts in reconnection, cusp physics, and modeling. TRACERS is dedicated to its proposer, and original Principal Investigator, Professor Craig Kletzing.</p>","PeriodicalId":21902,"journal":{"name":"Space Science Reviews","volume":"221 5","pages":"61"},"PeriodicalIF":7.4,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12204947/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144529528","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The Origins & Reservoirs of Exocomets.","authors":"Michele Bannister, Susanne Pfalzner, Tim Pearce, Alexander J Mustill, Hubert Klahr, Hideko Nomura, Nagayoshi Ohashi, Rosita Kokotanekova, Sebastian Marino, Dennis Bodewits, Raphael Marschall, Darryl Z Seligman, Geraint H Jones, Dimitri Veras","doi":"10.1007/s11214-025-01219-w","DOIUrl":"10.1007/s11214-025-01219-w","url":null,"abstract":"<p><p>Small bodies exist in distinct populations within their planetary systems. These reservoir populations hold a range of compositions, which to first order are dependent on formation location relative to their star. We provide a general overview of the nature of the reservoirs that source exocomets, from the influence of the stellar environment through planetesimal formation to comparisons with Solar System populations. Once transitioned from a young protoplanetary disc to a debris disc, a star can expect to be rained with exocomets. While exocomets are predominantly detected to date at A-type stars, planetesimals plausibly exist across a range of stellar masses, based on exoplanet abundance, debris disc occurrence and white dwarf infall.</p>","PeriodicalId":21902,"journal":{"name":"Space Science Reviews","volume":"221 7","pages":"90"},"PeriodicalIF":7.4,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12479627/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145207568","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Psyche Mission Description and Design Rationale.","authors":"Carol A Polanskey, Linda T Elkins-Tanton, James F Bell, Eleanor K Alonge, Sarah H Bairstow, Richard P Binzel, Abhijit Biswas, Luke Bury, Ernest Cisneros, Dongsuk Han, Insoo Jun, William M Klipstein, David J Lawrence, Timothy J McCoy, Nickolaos Mastrodemos, José M G Merayo, Sarah K Noble, David Y Oh, Rona Oran, Carolyn A Ortega, Ryan S Park, Patrick N Peplowski, Thomas H Prettyman, Marc D Rayman, Jodie B Ream, Thomas Roatsch, Timothy M Weise, Daniel D Wenkert, Benjamin P Weiss, Maria T Zuber","doi":"10.1007/s11214-025-01218-x","DOIUrl":"10.1007/s11214-025-01218-x","url":null,"abstract":"<p><p>The Psyche spacecraft launched on October 13, 2023 to journey to the asteroid of the same name. Psyche is the largest M-class asteroid and possibly the remanent core of an early differentiated planetesimal that was disrupted by collisions. The Psyche mission will test that hypothesis as the 14th mission in NASA's Discovery Program. An alternative hypothesis is that the asteroid is unmelted primordial material. We describe the proposal competition process leading to selection of the mission and its context with other small body missions. This paper will briefly introduce the three science instruments, gravity science investigation, and Deep Space Optical Communications technology demonstration, leading into a detailed explanation of the science mission architecture. The orbital science phase is divided into a series of circular mapping orbits at four distinct altitudes, each selected to address specific science objectives. The requirements and objectives for each orbit are accompanied by an assessment of the effectiveness of each phase. We discuss the structure of the Psyche team during the operations phase along with the roles and responsibilities of the science and flight operations teams. Key elements of mission operations that are unique to the Psyche mission are provided. The Science Data Center manages and archives the Psyche mission data. The contents of the archive data sets for each instrument are outlined as well as the interfaces between the Science Data Center, the instrument teams, and the Planetary Data System.</p>","PeriodicalId":21902,"journal":{"name":"Space Science Reviews","volume":"221 7","pages":"95"},"PeriodicalIF":7.4,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12521304/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145309179","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"From the TRICE-2 Investigations to the TRACERS Mission.","authors":"K J Trattner, J LaBelle, O Santolik, C A Kletzing, D M Miles, S A Fuselier, J W Bonnell, S R Bounds, I Kolmasova, S M Petrinec, R P Sawyer, S K Vines, C Moser-Gauthier, I H Cairns, T K Yeoman","doi":"10.1007/s11214-025-01178-2","DOIUrl":"10.1007/s11214-025-01178-2","url":null,"abstract":"<p><p>On the morning of December 8, 2018, two sounding rockets were launched into the northern hemisphere cusp region to investigate the spatial and temporal nature of cusp structures. The two rockets, designated Twin Rockets to Investigate Cusp Electrodynamics 2 (TRICE-2), consisted of a high- and a low-flyer rocket launched two minutes apart. The TRICE-2 mission was a pathfinder for the upcoming Tandem Reconnection and Cusp Electrodynamics Reconnaissance Satellites (TRACERS) mission and carried almost identical payloads to those proposed for the twin spacecraft of the TRACERS mission. Results from the TRICE-2 mission are summarized, including observed cusp features (low energy ions in the cusp, overlapping cusp ion dispersions and cusp ion signatures) and the connection of the cusp structures to ionospheric convection cells, provided by SuperDARN radar observations, to show the advantages of coordinated space and ground-based observations. A description is provided for how these results - and those of other experiments which made measurements of particles and waves in the cusp and in the dayside magnetosphere - have guided the science objectives of the TRACERS mission.</p>","PeriodicalId":21902,"journal":{"name":"Space Science Reviews","volume":"221 4","pages":"52"},"PeriodicalIF":9.1,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12159103/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144302829","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Understanding the Formation of Saturn's Regular Moons in the Context of Giant Planet Moons Formation Scenarios.","authors":"Michel Blanc, Aurélien Crida, Yuhito Shibaike, Sebastien Charnoz, Maryame El Moutamid, Paul Estrada, Olivier Mousis, Julien Salmon, Antoine Schneeberger, Pierre Vernazza","doi":"10.1007/s11214-025-01156-8","DOIUrl":"10.1007/s11214-025-01156-8","url":null,"abstract":"<p><p>This article explores the different formation scenarios of the Kronian moons system in the context of a highly dissipative Saturn, with the objective of identifying the most likely of these scenarios. First, we review the diversity of objects - moons and rings - orbiting solar system giant planets, and the diversity of their architectures, which formation scenarios must reproduce. We then identify in this broader context the specific features of the Saturn system, such as the particularly large spectrum of its moon masses, the uniqueness of Titan and the presence of both dense and tenuous rings, before discussing the applicability of the different giant planet moon formation scenarios to the Saturn case. We discuss each of the most relevant scenarios and their respective merits. Finally, we tentatively propose a \"favorite\" scenario and we identify the key observations to be made by future space missions and/or Earth-based telescopic observations to validate this scenario or possibly alternative ones.</p>","PeriodicalId":21902,"journal":{"name":"Space Science Reviews","volume":"221 3","pages":"35"},"PeriodicalIF":9.1,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11925992/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143693353","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The Tandem Reconnection and Cusp Electrodynamics Reconnaissance Satellites (TRACERS) Mission Design.","authors":"S M Petrinec, C A Kletzing, D M Miles, S A Fuselier, I W Christopher, D Crawford, S Omar, S R Bounds, J W Bonnell, J S Halekas, G B Hospodarsky, R J Strangeway, Y Lin, K J Trattner, J W Labelle, M Øieroset, O Santolik, J Moen, K Oksavik, T K Yeoman, I H Cairns, D Mark","doi":"10.1007/s11214-025-01185-3","DOIUrl":"10.1007/s11214-025-01185-3","url":null,"abstract":"<p><p>The detailed study of the global characteristics of collisionless magnetic reconnection that occurs at the magnetopause will be greatly enhanced by observations of plasma fluxes and fields within the low-altitude cusp region, as sampled by two spacecraft orbiting in tandem. The NASA Tandem Reconnection and Cusp Electrodynamics Reconnaissance Satellites (TRACERS) mission, a Heliophysics Small Explorer (SMEX) mission, will provide the necessary observations to enable significant progress to be made on understanding magnetic reconnection, especially in terms of its temporal versus spatial characteristics. This paper provides an overview of the TRACERS mission design and the trade studies conducted for the optimization of this design.</p>","PeriodicalId":21902,"journal":{"name":"Space Science Reviews","volume":"221 5","pages":"60"},"PeriodicalIF":7.4,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12204924/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144529527","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The Analyzer for Cusp Ions (ACI) on the TRACERS Mission.","authors":"Stephen A Fuselier, Matthew A Freeman, Craig A Kletzing, Sean R Christopherson, Michael J Covello, Daniel De Luna, Raymond L Doty, Colin G Elder, Judith D Furman, Jonathan Gasser, Don E George, Roman G Gomez, Guy A Grubbs, Kristie Llera, David M Miles, Joey Mukherjee, Kristian B Persson, Steven M Petrinec, Dinesh K V Radhakrishnan, Christopher L Ramirez, Ashley S Reisig, Charline Rodriguez, Courtney A Rouse, David A Ruggles, Shawn D Schwarz, Jonathan R Sekula, Linda J Shipp, Justyna M Sokół, Kylie M Sullivan, Karlheinz J Trattner, Sarah K Vines","doi":"10.1007/s11214-025-01154-w","DOIUrl":"10.1007/s11214-025-01154-w","url":null,"abstract":"<p><p>The Analyzers for Cusp Ions (ACIs) on the TRACERS mission measure ion velocity distribution functions in the magnetospheric cusp from two closely spaced spacecraft in low Earth orbit. The precipitating and upflowing ion measurements contribute to the overarching goal of the TRACERS mission and are key to all three science objectives of the mission. ACI is a toroidal top-hat electrostatic analyzer on a spinning platform that provides full angular coverage with instantaneous 22.5° × ∼6° angular resolution for a single energy step. ACI has an ion energy range from ∼8 eV/e to 20,000 eV/e covered in 47 logarithmic-spaced energy steps with fractional energy resolution of ∼10%. It provides reasonably high cadence (312 ms) measurements of the ion energy-pitch angle distribution with good sensitivity and energy resolution, enabling detection of cusp boundaries and characterization of cusp ion steps.</p>","PeriodicalId":21902,"journal":{"name":"Space Science Reviews","volume":"221 2","pages":"30"},"PeriodicalIF":9.1,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11906535/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143650873","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"<ArticleTitle xmlns:ns0=\"http://www.w3.org/1998/Math/MathML\">Simultaneous Occurrence of Magnetospheric Fluctuations at Different Discrete Frequencies ( <ns0:math><ns0:mi>f</ns0:mi> <ns0:mo>≈</ns0:mo></ns0:math> 1 - 5 mHz): A Review.","authors":"Simone Di Matteo, Umberto Villante","doi":"10.1007/s11214-025-01166-6","DOIUrl":"10.1007/s11214-025-01166-6","url":null,"abstract":"<p><p>In the last 30 years, many papers reported the almost simultaneous occurrence of magnetospheric fluctuations at different frequencies and latitudes (basically, in the range <math><mi>f</mi></math> ≈ 1-5 mHz; <math><mi>T</mi></math> ≈ 200-1000 s) and the possible existence and stability of sets of favorite frequencies (in particular: <math><mi>f</mi></math> <math><mmultiscripts><mo>≈</mo> <mprescripts></mprescripts> <mn>1</mn> <none></none></mmultiscripts> </math> 1.3, <math><mi>f</mi></math> <math><mmultiscripts><mo>≈</mo> <mprescripts></mprescripts> <mn>2</mn> <none></none></mmultiscripts> </math> 1.9, <math><mi>f</mi></math> <math><mmultiscripts><mo>≈</mo> <mprescripts></mprescripts> <mn>3</mn> <none></none></mmultiscripts> </math> 2.6-2.7, and <math><mi>f</mi></math> <math><mmultiscripts><mo>≈</mo> <mprescripts></mprescripts> <mn>4</mn> <none></none></mmultiscripts> </math> 3.2-3.4 mHz) has been proposed, determining controversial results. In the present paper we review these investigations focusing particular attention on several critical aspects that may have influenced the results and the comparison of these analyses (particularly, the correspondence between magnetospheric and solar wind fluctuations; the role of the short and long term variations of the solar wind and magnetospheric characteristics; the effects of the great variety of analytical methods adopted for the evaluation of power spectra and for the identification of relevant events). The results of this global analysis do not support the existence of a stable and persistent <i>absolute</i> set of favorite frequencies for magnetospheric oscillations; nevertheless, in the range of frequency explored by most investigations ( <math><mi>f</mi></math> ≈ 1.5-4.0 mHz), they reveal a strong predominance of cases between <math><mi>f</mi></math> ≈ 1.5-2.5 mHz, with percentages maximizing in the bin centered at <math><mi>f</mi></math> = 2.0 mHz (a feature mostly due to events occurring at <math><mi>f</mi></math> ≈ 1.9 mHz) and rapidly decreasing with increasing frequency; small evidence for an additional peak emerges at <math><mi>f</mi></math> = 3.5 mHz; these aspects are much more explicit in the geomagnetic events than in the ionospheric and magnetospheric ones. Among other processes, the impact of the \"mesoscale\" solar wind density structures on the magnetosphere might be related with the onset of magnetospheric fluctuations at the observed frequencies.</p><p><strong>Supplementary information: </strong>The online version contains supplementary material available at 10.1007/s11214-025-01166-6.</p>","PeriodicalId":21902,"journal":{"name":"Space Science Reviews","volume":"221 4","pages":"40"},"PeriodicalIF":9.1,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12014847/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144019643","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}