Detecting the errors in solar system ephemeris by pulsar timing
Li Liang1; Guo Li1; Wang GuangLi1
AbstractPulsar timing uses planetary ephemerides to convert the measured pulse arrival time at an observatory to the arrival time at the Solar System barycenter (SSB). Since these planetary ephemerides cannot be perfect, a method of detecting the associated errors based on a pulsar timing array is developed. By using observations made by an array of 18 millisecond pulsars from the Parkes Pulsar Timing Array, we estimated the vector uncertainty from the Earth to the SSB of JPL DE421, which reflects the offset of the ephemeris origin with respect to the ideal SSB, in different piecewise intervals of pulsar timing data, and found consistent results. To investigate the stability and reliability of our method, we divided all the pulsars into two groups. Both groups yield largely consistent results, and the uncertainty of the Earth-SSB vector is several hundred meters, which is consistent with the accuracy of JPL DE421. As an improvement in the observational accuracy, pulsar timing will be helpful to improve the solar system ephemeris in the future.
KeywordPACKAGE TEMPO2 MASS astrometry ephemerides pulsars: general
Funding Project[National Natural Science Foundation of China] ; [Opening Project of Shanghai Key Laboratory of Space Navigation and Position Techniques]
Document Type期刊论文
First Author AffilicationNational Astronomical Observatories, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Li Liang,Guo Li,Wang GuangLi. Detecting the errors in solar system ephemeris by pulsar timing[J]. RESEARCH IN ASTRONOMY AND ASTROPHYSICS,2016,16(4).
APA Li Liang,Guo Li,&Wang GuangLi.(2016).Detecting the errors in solar system ephemeris by pulsar timing.RESEARCH IN ASTRONOMY AND ASTROPHYSICS,16(4).
MLA Li Liang,et al."Detecting the errors in solar system ephemeris by pulsar timing".RESEARCH IN ASTRONOMY AND ASTROPHYSICS 16.4(2016).
Files in This Item:
There are no files associated with this item.
Related Services
Recommend this item
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Li Liang]'s Articles
[Guo Li]'s Articles
[Wang GuangLi]'s Articles
Baidu academic
Similar articles in Baidu academic
[Li Liang]'s Articles
[Guo Li]'s Articles
[Wang GuangLi]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Li Liang]'s Articles
[Guo Li]'s Articles
[Wang GuangLi]'s Articles
Terms of Use
No data!
Social Bookmark/Share
All comments (0)
No comment.

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.