Direct estimation of the Solar acceleration using geodetic/astrometric VLBI observations
文献类型：期刊论文
| 作者 | Xu MingHui1,2; Wang GuangLi1 ; Zhao Ming1
|
| 刊名 | SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY
 |
| 出版日期 | 2012-02-01 |
| 卷号 | 55期号:2页码:329-332 |
| 关键词 | solar acceleration secular aberration VLBI astrometry |
| 英文摘要 | The secular aberration drift observed as the apparent proper motion of extragalactic radio sources is caused by the acceleration of the coordinate origin, the Solar System barycenter. So, the acceleration can be estimated as a global parameter by using the 30 years global geodetic/astrometric VLBI data. This estimation is independent of any kinematic or dynamic model of the Milky Way or statistics hypothesis. The estimated acceleration in the direction of the Galactic center is (0.80 +/- 0.04) cm center dot s(-1)center dot yr(-1), while the other two components are (-0.01 +/- 0.06) and (0.52 +/- 0.05) cm center dot s(-1)center dot yr(-1) in the direction along the Solar motion in the Galactic plane and in the direction normal to the Galactic plane, respectively. The estimate of the acceleration independently provides another kinematics parameter without referring to any objects within the Galaxy. |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 类目[WOS] | Physics, Multidisciplinary |
| 研究领域[WOS] | Physics |
| 关键词[WOS] | ABERRATION ; MOTIONS |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000299295500020 |
| 源URL | [http://119.78.226.72/handle/331011/18126]  |
| 专题 | 上海天文台_天文地球动力学研究中心 |
| 作者单位 | 1.Chinese Acad Sci, Shanghai Astron Observ, Shanghai 200030, Peoples R China 2.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Xu MingHui,Wang GuangLi,Zhao Ming. Direct estimation of the Solar acceleration using geodetic/astrometric VLBI observations[J]. SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY,2012,55(2):329-332. |
| APA | Xu MingHui,Wang GuangLi,&Zhao Ming.(2012).Direct estimation of the Solar acceleration using geodetic/astrometric VLBI observations.SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY,55(2),329-332. |
| MLA | Xu MingHui,et al."Direct estimation of the Solar acceleration using geodetic/astrometric VLBI observations".SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY 55.2(2012):329-332. |
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来源：上海天文台
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