Chinese Astronomy and Astrophysics最新文献

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Analysis of the Energy Flux Density near Electron Diffusion Region of Asymmetric Magnetic Field Reconnection 非对称磁场再连接电子扩散区附近的能量通量密度分析
Chinese Astronomy and Astrophysics Pub Date : 2024-01-01 DOI: 10.1016/j.chinastron.2024.03.005
WANG Jun , ZHOU Meng , PANG Ye , DENG Xiao-hua
{"title":"Analysis of the Energy Flux Density near Electron Diffusion Region of Asymmetric Magnetic Field Reconnection","authors":"WANG Jun ,&nbsp;ZHOU Meng ,&nbsp;PANG Ye ,&nbsp;DENG Xiao-hua","doi":"10.1016/j.chinastron.2024.03.005","DOIUrl":"https://doi.org/10.1016/j.chinastron.2024.03.005","url":null,"abstract":"<div><p>Magnetic reconnection is a crucial energy conversion process in plasmas, and it is important to study the forms of energy conversion and their distribution in this process. Previous research has focused mainly on the energy fluxes in symmetric reconnection, while the study of asymmetric reconnection at the Earth’s magnetopause, especially in terms of statistical analysis of multiple events, has not been reported before. Therefore, 10 magnetic reconnection events at the magnetopause observed by MMS (Magnetospheric Multiscale) satellite that passed through the electron diffusion region were used for analysis. Although the contribution of different energy flux varies case by case, our results show that in most events, the ion enthalpy flux is dominant, followed by the Poynting flux. The ion heat flux is slightly smaller than the Poynting flux, while the sum of ion kinetic energy flux, electron enthalpy flux and electron heat flux only accounts for less than 10% of the total energy flux. By projecting the normalized energy flux of all events into <span><math><mrow><msub><mi>B</mi><mi>L</mi></msub><mo>−</mo><msub><mi>V</mi><mrow><mo>(</mo><mi>i</mi><mo>,</mo><mi>L</mi><mo>)</mo></mrow></msub></mrow></math></span> plane (in <span><math><mrow><mi>L</mi><mi>M</mi><mi>N</mi></mrow></math></span> coordinate), we find that the energy flux in <span><math><mi>M</mi></math></span> direction is comparable to the energy flux in <span><math><mi>L</mi></math></span> direction and also there is an “anti-correlated” relationship between the ion velocity and ion heat flux around reconnection diffusion region, consistent with previous studies.</p></div>","PeriodicalId":35730,"journal":{"name":"Chinese Astronomy and Astrophysics","volume":"48 1","pages":"Pages 55-72"},"PeriodicalIF":0.0,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S0275106224000055/pdfft?md5=54057e4e235e3b92365b1a7869b94cd7&pid=1-s2.0-S0275106224000055-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140164063","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Study of the Astrophysical Origins of Neutron-captue Elements in CEMP Star HE 1005-1439 CEMP 星 HE 1005-1439 中子俘获元素的天体物理起源研究
Chinese Astronomy and Astrophysics Pub Date : 2024-01-01 DOI: 10.1016/j.chinastron.2024.03.002
HAN Wan-qiang , YANG Guo-chao , NIU Ping , ZHANG Bo
{"title":"Study of the Astrophysical Origins of Neutron-captue Elements in CEMP Star HE 1005-1439","authors":"HAN Wan-qiang ,&nbsp;YANG Guo-chao ,&nbsp;NIU Ping ,&nbsp;ZHANG Bo","doi":"10.1016/j.chinastron.2024.03.002","DOIUrl":"https://doi.org/10.1016/j.chinastron.2024.03.002","url":null,"abstract":"<div><p>HE 1005-1439 is a carbon-enhanced metal-poor (CEMP) star with [Fe/H]<span><math><mrow><mo>∼</mo><mo>−</mo><mn>3.0</mn></mrow></math></span>, which is largely enhanced in elements produced by slow neutron-capture process (s-process; e.g., [Ba/Fe]=1.16<span><math><mrow><mo>±</mo><mn>0.31</mn></mrow></math></span>, [Pb/Fe]=<span><math><mrow><mn>1.98</mn><mo>±</mo><mn>0.19</mn></mrow></math></span>), and mildly enhanced in elements produced by rapid neutron-capture process (r-process; e.g., [Eu/Fe]=0.46<span><math><mrow><mo>±</mo><mn>0.22</mn></mrow></math></span>). The neutron-capture element patterns of the star can not be fitted by the s-process model or intermediate process (i-process) model. Studying the astrophysical origins of chemical elements in the star based on the method of abundance decomposition can help understanding the formation and evolution of the CEMP stars. Using the combination of s-process and r-process abundances, we fully fit the abundance patterns of the neutron-capture elements of this star. We find that the neutron-capture elements are mainly produced by the s-process of the AGB companion with low mass and low metallicity, and the r-process nucleosynthesis also contributes a little to this star.</p></div>","PeriodicalId":35730,"journal":{"name":"Chinese Astronomy and Astrophysics","volume":"48 1","pages":"Pages 73-83"},"PeriodicalIF":0.0,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S027510622400002X/pdfft?md5=0c8836b6f1f3392b98e93975e062bb3b&pid=1-s2.0-S027510622400002X-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140164064","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
On the Co-orbital Motion of Any Inclination 论任意倾角的同轨道运动
Chinese Astronomy and Astrophysics Pub Date : 2024-01-01 DOI: 10.1016/j.chinastron.2024.03.003
LU Rui , LEI Han-lun , ZHOU Li-yong
{"title":"On the Co-orbital Motion of Any Inclination","authors":"LU Rui ,&nbsp;LEI Han-lun ,&nbsp;ZHOU Li-yong","doi":"10.1016/j.chinastron.2024.03.003","DOIUrl":"https://doi.org/10.1016/j.chinastron.2024.03.003","url":null,"abstract":"<div><p>The co-orbital motion occurs when a celestial body (e.g. an asteroid) shares the same semimajor axis with the perturbing object (e.g. a planet), and thus they are in a 1:1 mean motion resonance. Trojan asteroids in the tadpole orbits around planets in the Solar System are these co-orbital objects. The motion and origin of some Trojan asteroids, particularly those on high-inclination orbits, are still not fully understood. In this paper, a newly developed perturbation function expansion, which is applicable to the 1:1 resonance, is used to investigate the co-orbital motion in three-dimensional space. The position of the resonance center and the resonance width are calculated for different initial orbital elements, and the relationship between the orbital types and the initial orbital elements is analyzed. The results obtained by the analytical method are compared with and verified by the results from numerical simulations. A panorama of the co-orbital motion in the wide orbital elements space is obtained.</p></div>","PeriodicalId":35730,"journal":{"name":"Chinese Astronomy and Astrophysics","volume":"48 1","pages":"Pages 142-160"},"PeriodicalIF":0.0,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S0275106224000031/pdfft?md5=b6ffd31cfb78aa753147fe59913a108f&pid=1-s2.0-S0275106224000031-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140164048","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Direct Detection of Cosmic Rays with the Dark Matter Particle Explorer 利用暗物质粒子探测器直接探测宇宙射线
Chinese Astronomy and Astrophysics Pub Date : 2024-01-01 DOI: 10.1016/j.chinastron.2024.03.009
YUAN Qiang
{"title":"Direct Detection of Cosmic Rays with the Dark Matter Particle Explorer","authors":"YUAN Qiang","doi":"10.1016/j.chinastron.2024.03.009","DOIUrl":"https://doi.org/10.1016/j.chinastron.2024.03.009","url":null,"abstract":"<div><p>The origin, acceleration, and propagation of high-energy cosmic rays is one of the most important questions in modern physics and astronomy. To fully uncover such a mystery, precise measurements of the energy spectra and anisotropies of cosmic rays, as well as multi-wavelength electromagnetic radiation from various types of energetic objects are required. The direct measurements of energy spectra of different species via particle detectors in space are an essential way to study cosmic ray physics. China launched the first space astronomical satellite, the Dark Matter Particle Explorer (DAMPE) in the end of 2015, which keeps operation in space for more than 7 years. The DAMPE has a relatively large acceptance and a high energy resolution, and has made important progresses in measuring the spectral structures of cosmic ray protons, helium nuclei, and boron-to-carbon and boron-to-oxygen ratios. These new measurements bring new insights in understanding the origin and propagation of cosmic rays. This paper reviews the instrumentation and operation of DAMPE, with an emphasis on its scientific results and physical implications in cosmic ray studies.</p></div>","PeriodicalId":35730,"journal":{"name":"Chinese Astronomy and Astrophysics","volume":"48 1","pages":"Pages 41-54"},"PeriodicalIF":0.0,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S0275106224000092/pdfft?md5=dedbe05c48cf702c4cf888cb9231850c&pid=1-s2.0-S0275106224000092-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140164062","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Galileo E3 Total Time Delay Calibration in NTSC Time and Frequency Comparison Galileo E3 在 NTSC 时间和频率比较中的总时延校准
Chinese Astronomy and Astrophysics Pub Date : 2024-01-01 DOI: 10.1016/j.chinastron.2024.03.001
GUO Dong , DONG Shao-wu , WU Wen-jun , WANG Wei-xiong , SONG Hui-jie , WANG Xiang
{"title":"Galileo E3 Total Time Delay Calibration in NTSC Time and Frequency Comparison","authors":"GUO Dong ,&nbsp;DONG Shao-wu ,&nbsp;WU Wen-jun ,&nbsp;WANG Wei-xiong ,&nbsp;SONG Hui-jie ,&nbsp;WANG Xiang","doi":"10.1016/j.chinastron.2024.03.001","DOIUrl":"https://doi.org/10.1016/j.chinastron.2024.03.001","url":null,"abstract":"<div><p>In order to improve the reliability of the time transfer link, Bureau International des Poids et Mesures (BIPM) has offcially taken the Galileo time comparison as the backup link for UTC calculation since 2020. Therefore, Galileo calibration of receiver is a necessary work for all timekeeping labs around the world to participate in the UTC link. Taking the GPS link calibrated by Physikalisch-Technische Bundesanstalt (PTB) and the National Time Service Center (NTSC) as reference, this paper sets PT09 as reference station to calibrate and verify the Galileo E3 (E1&amp;E5a) total delay of NT02 and NT05 receivers from NTSC. The results show that the Galileo E3 total delay of NT02 and NT05 are 74.6 ns and 46.5 ns, respectively, the calibration uncertainty is 3.5 ns, and the calibration delay is relatively stable. After calibration, GPS P3 and Galileo E3 Common View results between NT02/NT05 and calibrated receivers of other timekeeping labs are basically consistent. Taking the GPS P3 links comparison results as reference between NTP3 and receivers from other labs, the average deviation is less than 1.5 ns, which is within the calibration uncertainty range.</p></div>","PeriodicalId":35730,"journal":{"name":"Chinese Astronomy and Astrophysics","volume":"48 1","pages":"Pages 206-221"},"PeriodicalIF":0.0,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S0275106224000018/pdfft?md5=b5760ec431f28d12ff3bf386f9d775cc&pid=1-s2.0-S0275106224000018-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140164082","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A Study of Solar Radiation Pressure Model in BDS-3 Precise Orbit Determination BDS-3 精确轨道测定中的太阳辐射压力模型研究
Chinese Astronomy and Astrophysics Pub Date : 2023-10-01 DOI: 10.1016/j.chinastron.2023.11.001
LI Peng-jie , ZHANG Han-wei , XIE Meng-xin , ZHAO Dong-fang
{"title":"A Study of Solar Radiation Pressure Model in BDS-3 Precise Orbit Determination","authors":"LI Peng-jie ,&nbsp;ZHANG Han-wei ,&nbsp;XIE Meng-xin ,&nbsp;ZHAO Dong-fang","doi":"10.1016/j.chinastron.2023.11.001","DOIUrl":"https://doi.org/10.1016/j.chinastron.2023.11.001","url":null,"abstract":"<div><p>For the BDS (BeiDou Navigation Satellite System) satellites, the solar radiation pressure is the major non-gravitational perturbation the satellites suffer. Due to the influence of multiple factors, accurate modeling the solar radiation pressure acting on these satellites is difficult to accomplish. The solar radiation pressure perturbation is an essential source of error in the precise orbit determination (POD) and orbit prediction processes of the BDS satellites. As the ECOMC (Empirical CODE Orbit Model 1 and 2 Combined) model adopts the advantageous features of the ECOM1 (Empirical CODE Orbit Model 1) model and the ECOM2 (Empirical CODE Orbit Model 2) model, a greater number of parameters have been introduced into the model, leading to strong correlation between the ECOMC model parameters. In response to the deficiency of the ECOMC model, the authors collected the BDS-3 satellite precise ephemeris data that were provided by Wuhan University (WHU) from January 2019 to April 2022. And by these ephemeris data, the ECOMC model’s 13 parameters were obtained through the dynamic orbit fitting method. By conducting these time sequence diagrams analysis of the ECOMC model parameters, this thesis affords the selection strategies of the solar radiation pressure parameters of the ECOMC model for BDS-3 inclined geosynchronous orbit (IGSO) and medium earth orbit (MEO) satellite. And the rationality of the selection strategies of the solar radiation pressure parameters for the ECOMC model was verified by orbit fitting and orbit prediction experiments. The results show that using the improved ECOMC model gains the best orbit fitting effects for BDS-3 IGSO and MEO satellite, and can also enhance the accuracy of medium and long-term orbit prediction of BDS-3 IGSO and MEO satellite.</p></div>","PeriodicalId":35730,"journal":{"name":"Chinese Astronomy and Astrophysics","volume":"47 4","pages":"Pages 894-911"},"PeriodicalIF":0.0,"publicationDate":"2023-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138550168","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Initial Orbit Determination Based on Intelligent Optimization Algorithm 基于智能优化算法的初始轨道确定
Chinese Astronomy and Astrophysics Pub Date : 2023-10-01 DOI: 10.1016/j.chinastron.2023.11.005
LIU Xin , HOU Xi-yun , LIU Lin , GAN Qing-bo , YANG Zhi-tao
{"title":"Initial Orbit Determination Based on Intelligent Optimization Algorithm","authors":"LIU Xin ,&nbsp;HOU Xi-yun ,&nbsp;LIU Lin ,&nbsp;GAN Qing-bo ,&nbsp;YANG Zhi-tao","doi":"10.1016/j.chinastron.2023.11.005","DOIUrl":"https://doi.org/10.1016/j.chinastron.2023.11.005","url":null,"abstract":"<div><p><span>Classical methods for initial orbit determination (IOD) include Laplace method, Gauss method, and their variations. In addition to this, based on the characteristic of optical observation data nowadays, experts propose some other IOD methods, like Double-</span><span><math><mi>r</mi></math></span> method and admissible region method. One of the ways to determinate the orbit through double-<span><math><mi>r</mi></math></span><span> method is to guess distances of the target from the observer at two epochs—usually at the first and the last one. By doing so, we can solve the Lambert problem, and use its solution as the initial guess of the orbit. Furthermore, we can improve the initial guess by iterations to reduce the root mean square (RMS) of the observations. The admissible method is based on the concept of attributable (longitude, latitude, and their rates). With some conceptions, the admissible region described by the range and range rate from the observer is characterized. Using triangulation we can find the nodal point that makes the RMS minimal. In our work, we apply one intelligent optimization method—the particle swarm optimization method to the two methods, based on simulated and real data, and compare the results with that of modified Laplace method. At last, we briefly discuss the possibility of applying the double-</span><span><math><mi>r</mi></math></span> method to the orbit link problem.</p></div>","PeriodicalId":35730,"journal":{"name":"Chinese Astronomy and Astrophysics","volume":"47 4","pages":"Pages 837-871"},"PeriodicalIF":0.0,"publicationDate":"2023-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138549858","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Research on Thermal Expansion Characteristics Measurement of Launch Lock Mechanism for SIS Mixer’s Space Application 用于 SIS 混合器空间应用的发射锁定机构热膨胀特性测量研究
Chinese Astronomy and Astrophysics Pub Date : 2023-10-01 DOI: 10.1016/j.chinastron.2023.11.010
ZHANG Bi-cheng , LIN Zhen-hui , YAO Qi-jun
{"title":"Research on Thermal Expansion Characteristics Measurement of Launch Lock Mechanism for SIS Mixer’s Space Application","authors":"ZHANG Bi-cheng ,&nbsp;LIN Zhen-hui ,&nbsp;YAO Qi-jun","doi":"10.1016/j.chinastron.2023.11.010","DOIUrl":"https://doi.org/10.1016/j.chinastron.2023.11.010","url":null,"abstract":"<div><p><span>The High Sensitivity Terahertz Detection Module (HSTDM) is one of the scientific payloads of the Chinese Space Survey Telescope. The core of the HSTDM is the NbN superconducting SIS (Superconductor Insulator Superconductor) mixer, operating around 10 K. The installation structure of the SIS mixer needs to be specially designed to cope with the mechanical vibration during the launch phase and the thermal insulation requirements during the operation phase. Material thermal expansion characteristics investigation based on low-temperature LVDT (Linear Variable Differential Transformer) measurement and scratch marking measurement were carried out to confirm the validity of the thermal expansion lock mechanism design. The two methods are cross verified. The LVDT experimental measurement results show that the shrinkage rate of Teflon changes with temperature and meets the theoretical model. At the same time, we verified the LVDT results with scratch marking method. Consistently, the shrinkage rate of the material is 1.86</span><span><math><mo>%</mo></math></span> at 80 K, so the Teflon front-end lock mechanism of the SIS mixer can achieve effective separation after cooling down.</p></div>","PeriodicalId":35730,"journal":{"name":"Chinese Astronomy and Astrophysics","volume":"47 4","pages":"Pages 912-928"},"PeriodicalIF":0.0,"publicationDate":"2023-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138550169","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Morphological Decomposition of the Early-type Spiral Galaxy M81 (NGC 3031) 早期型螺旋星系 M81(NGC 3031)的形态分解
Chinese Astronomy and Astrophysics Pub Date : 2023-10-01 DOI: 10.1016/j.chinastron.2023.11.002
GONG Jun-yu , MAO Ye-wei
{"title":"Morphological Decomposition of the Early-type Spiral Galaxy M81 (NGC 3031)","authors":"GONG Jun-yu ,&nbsp;MAO Ye-wei","doi":"10.1016/j.chinastron.2023.11.002","DOIUrl":"https://doi.org/10.1016/j.chinastron.2023.11.002","url":null,"abstract":"<div><p><span>This paper presents a morphological investigation of the early-type spiral galaxy M81 (NGC 3031) through decomposition by fitting radial profiles of surface brightness using the software </span><span>GALFIT</span><span>, aimed at exploring structural components of M81 and quantifying their morphology. In this work, we adopt 6 types of decompositions with different numbers of morphological components, among which the most complicated one contains 5 components such as a bulge, a disk, a pair of outer spiral arms<span>, a pair of inner spiral arms, and a galactic nucleus. The results show that, M81 hosts a classical bulge with the Sérsic index </span></span><span><math><mo>∼</mo></math></span> 5.0; the morphology and the luminosity for the bulge are almost constant in the different decomposition types. The disk of M81 has the Sérsic index <span><math><mo>∼</mo></math></span> 1.2 but the morphology and the luminosity are found sensitive to the inclusion of the inner spiral arms in the decomposition or not. The results of this work indicate that the combination of individual substructures has a considerable impact on the morphology of the galaxy as a mixture. On the basis of the results, the usability of the different types of decomposition is suggested in this work. The three-component decomposition, i.e., bulge + disk + nucleus, is applicable to statistics of large samples of galaxies; more complicated decomposition with spiral arms taken into account is suitable for precise measurements of individual galaxies in small samples. This work is based on the single-band Spitzer-The Infrared Array Camera (IRAC) 4.5 <span><math><mi>μ</mi></math></span><span><span>m image. In the future, we will carry out multi-wavelength decomposition, for the purpose of investigating spectral energy distributions and </span>stellar population properties for the galactic substructures, and thereby deduce their formation history and evolution processes.</span></p></div>","PeriodicalId":35730,"journal":{"name":"Chinese Astronomy and Astrophysics","volume":"47 4","pages":"Pages 784-817"},"PeriodicalIF":0.0,"publicationDate":"2023-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138549831","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Reference Dynamic Models for Space Debris Orbit Prediction 用于空间碎片轨道预测的参考动态模型
Chinese Astronomy and Astrophysics Pub Date : 2023-10-01 DOI: 10.1016/j.chinastron.2023.11.003
HU Song-hua , TANG Jing-shi
{"title":"Reference Dynamic Models for Space Debris Orbit Prediction","authors":"HU Song-hua ,&nbsp;TANG Jing-shi","doi":"10.1016/j.chinastron.2023.11.003","DOIUrl":"https://doi.org/10.1016/j.chinastron.2023.11.003","url":null,"abstract":"<div><p>In different orbit prediction scenarios, the dynamic models used are also different. For example, atmospheric drag is a very important perturbation force in the prediction of space debris in low orbits, but at mid-to-high orbits, the atmospheric drag can be ignored. To select the most suitable dynamic models for orbit prediction in different scenarios, this article provides a large number of orbits for different accuracy requirements and different orbit types. By comparing the prediction results with different dynamic models, the optimal dynamic models for various prediction scenarios are recommended. This work can serve as a reference and standard for the selection of reference dynamics models for different orbital types of space debris in orbit prediction.</p></div>","PeriodicalId":35730,"journal":{"name":"Chinese Astronomy and Astrophysics","volume":"47 4","pages":"Pages 872-893"},"PeriodicalIF":0.0,"publicationDate":"2023-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138550167","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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