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The Influence of Different Solar System Planetary Ephemerides on Pulsar Timing: 《Research in Astronomy and Astrophysics》2024年第8期85-99,共15页Jian-Peng Dai Wei Han Na Wang; funded by the Chinese Academy of Sciences(CAS)“Light of West China”Program,the Tianshan talents program(2023TSYCTD0013);The National Natural Science Foundation of China(NSFC,grant No.12288102);The Major Science and Technology Program of Xinjiang Uygur Autonomous Region(No.2022A03013-3)。; Pulsar timing offers a comprehensive avenue for exploring diverse topics in physics and astrophysics.Highprecision solar system planetary ephemeris is crucial for pulsar timing as it provides the positions and velocit...; 关键词：(stars)pulsars general-Planetary Systems-time-ephemerides

Astrometric Observations of NEA 1998 HH49 Using the Daocheng 50 cm Telescope: 《Research in Astronomy and Astrophysics》2024年第7期71-78,共8页Huan Xu Xiang-Ming Cheng Yi-Gong Zhang Teng-Fei Song Zhen-Jun Zhang Qing-Yu Peng; funded by the National Key R&D Program of China(grant No.2022YFE0116800);the National Natural Science Foundation of China(NSFC,grant No.12173085);the West Light Foundation of The Chinese Academy of Sciences Key scientific research projects of colleges and universities in Henan Province(grant No.23B16001)。; This study details an astrometric observation campaign of the Near-Earth Asteroid 1998 HH49,conducted with the aim of refining our understanding of its physical characteristics.Utilizing the 50 cm telescope located at...; 关键词：ASTROMETRY EPHEMERIDES TIME

Nereid's orbit based on new precise observations: 《Research in Astronomy and Astrophysics》2021年第7期123-126,共4页Kai Tang Hui-Yan Zhang Yong Yu Dan Yan Yin-Dun Mao; funded by the B-type Strategic Priority Program of the Chinese Academy of Sciences(Grant No.XDB41000000);the National Natural Science Foundation of China(NSFC)under Nos.12073062 and 11803019;the Preresearch Project on Civil Aerospace Technologies funded by the China National Space Administration(Grant No.D020303)。; A new orbit of Triton was provided by our previous work, benefitted by new Gaia Data, both in a new precise reduction of charge-coupled device observations and in the planetary ephemeris INPOP19 a.In this paper, we pr...; 关键词：ASTROMETRY celestial mechanics EPHEMERIDES planets and satellites:individual(Nereid)

Gravitational wave sensitivity curve of pulsar timing arrays affected by correlated noises: 《Research in Astronomy and Astrophysics》2020年第11期293-302,共10页Shu Liu Ming-Lei Tong; the National Natural Science Foundation of China(Grant Nos.U1831130 and U1531112);the program of Youth Innovation Promotion Association CAS(2017450)。; The detection of gravitational waves(GWs)by pulsar timing arrays(PTAs)is not only a very important supplementation of the verification of general relativity but also a new window to study the evolution of supermassive...; 关键词：gravitational waves PULSARS general time EPHEMERIDES

Orbital Elements Ephemerides and Interfaces Design of LEO Satellites: 《Journal of Geodesy and Geoinformation Science》2019年第4期44-52,共9页Shanchuan FANG Lan DU Yunpeng GAO Peiyuan ZHOU Zejun LIU; Low earth orbit satellites,with unique advantages,are prosperous types of navigation augmentation satellites for the GNSS satellites constellations.The broadcast ephemeris element needs to be designed as an important ...; 关键词：LEO satellites broadcast ephemeris nonsingular orbital elements of the first kind quantization unit

Transit timing variations and linear ephemerides of confirmed Kepler transiting exoplanets: 《Research in Astronomy and Astrophysics》2019年第3期79-84,共6页Pavol Gajdo? Martin Vaňko ?tefan Parimucha; supported by the Slovak Research and Development Agency under contract No. APVV-15-0458;the project VEGA 2/0031/18;supported by the VVGS-PF-2017-724 internal grant of the Faculty of Science, P. J.šafárik University in Kosice; We determine new linear ephemerides of transiting exoplanets using long-cadence de-trended data from quarters Q1 to Q17 of the Kepler mission. We analysed transit-timing variation(TTV) diagrams of 2098 extrasolar plan...; 关键词：stars planetary systems-eclipses-techniques PHOTOMETRIC

Updating the orbital ephemeris of the dipping source XB 1254–690 and the distance to the source: 《Research in Astronomy and Astrophysics》2017年第10期97-108,共12页Angelo F.Gambino Rosario Iaria Tiziana Di Salvo Marco Matranga Luciano Burderi Fabio Pintore Alessandro Riggio Andrea Sanna; the Regione Autonoma della Sardegna through POR-FSE Sardegna 2007–2013, L.R. 7/2007;Progetti di Ricerca di Base e Orientata, Project N. CRP-60529;financial contribution from the agreement ASI-INAF I/037/12/0;the Sardinia Regional Government for financial support (P.O.R. Sardegna F.S.E. Operational Programme of the Autonomous Region of Sardinia, European Social Fund 2007–2013 - Axis IV Human Resources, Objective l.3, Line of Activity l.3.1.); XB 1254-690 is a dipping low mass X-ray binary system hosting a neutron star and showing type I X-ray bursts. We aim at obtaining a more accurate orbital ephemeris and at constraining the orbital period derivative of ...; 关键词：stars： neutron -- stars： individual （XB 1254-690） -- X-rays： binaries -- X-rays： stars --Astrometry and celestial mechanics： ephemerides

Detecting the errors in solar system ephemeris by pulsar timing: 《Research in Astronomy and Astrophysics》2016年第4期47-54,共8页Liang Li Li Guo Guang-Li Wang; supported by the National Natural Science Foundation of China(U1431117);the Opening Project of Shanghai Key Laboratory of Space Navigation and Position Techniques(3912DZ227330001); Pulsar timing uses planetary ephemerides to convert the measured pulse arrival time at an obser- vatory to the arrival time at the Solar System barycenter （SSB）. Since these planetary ephemerides cannot be perfect, ...; 关键词：astrometry -- ephemerides -- pulsars： general

Four Poission-Laplace Theory of Gravitation (I): 《Journal of Modern Physics》2015年第9期1195-1206,共12页Golden Gadzirayi Nyambuya; The Poisson-Laplace equation is a working and acceptable equation of gravitation which is mostly used or applied in its differential form in Magneto-Hydro-Dynamic (MHD) modelling of e.g. molecular clouds. From a gener...; 关键词：ASTROMETRY Celestial MECHANICS EPHEMERIDES Planets and Satellites: Formation

Fundamental Physical Basis for Maxwell-Heaviside Gravitomagnetism: 《Journal of Modern Physics》2015年第9期1207-1219,共13页Golden Gadzirayi Nyambuya; Gravitomagnetism is universally and formally recognised in contemporary physics as being the linear first-order approximation of Einstein’s field equations emerging from the General Theory of Relativity (GTR). Herein...; 关键词：ASTROMETRY Celestial MECHANICS EPHEMERIDES GRAVITOMAGNETISM Quantum Gravity Unified Field Theory

EPHEMERIDES