A Pulsar Timescale Algorithm Using NANOGRAV Data

DOI

10.2991/icmmita-15.2015.198How to use a DOI?

Keywords

pulsars timing residuals; ensemble pulsar time scale; frequency instability.

Abstract

Millisecond pulsar can generate another type of time scale that is totally independent of atomic time scale, because physical mechanisms of pulsar time scale and atomic time scale are quite different. Usually pulsar timing observation isn't even sampled, and their data set is sparse, So we use cubic spline interpolation to densify data file and make intervals between data points even, after that we employ vondrak filter to smooth data set and get rid of high frequency noise. We used the latest released NANOGRAV data to generate ensemble pulsar time. Clock difference between pulsar time(PT) and atomic time was got and instability of PT was analysed, RMS of clock difference is 0.056?s, and long term frequency instability of PT(>1year) is better than 4E-15. Results show that instability of PT is comparable to that of atomic time scale.

Copyright

© 2015, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Dongshan Yin
AU  - Shuhong Zhao
AU  - Yuping Gao
AU  - Yuejuan Jing
PY  - 2015/11
DA  - 2015/11
TI  - A Pulsar Timescale Algorithm Using NANOGRAV Data
BT  - Proceedings of the 2015 3rd International Conference on Machinery, Materials and Information Technology Applications
PB  - Atlantis Press
SP  - 1077
EP  - 1081
SN  - 2352-538X
UR  - https://doi.org/10.2991/icmmita-15.2015.198
DO  - 10.2991/icmmita-15.2015.198
ID  - Yin2015/11
ER  -