English

An algorithm for determining the rotation count of pulsars

Instrumentation and Methods for Astrophysics 2018-03-14 v1 High Energy Astrophysical Phenomena

Abstract

We present here a simple, systematic method for determining the correct global rotation count of a radio pulsar; an essential step for the derivation of an accurate phase-coherent ephemeris. We then build on this method by developing a new algorithm for determining the global rotational count for pulsars with sparse timing data sets. This makes it possible to obtain phase-coherent ephemerides for pulsars for which this has been impossible until now. As an example, we do this for PSR J0024-7205aa, an extremely faint MSP recently discovered in the globular cluster 47 Tucanae. This algorithm has the potential to significantly reduce the number of observations and the amount of telescope time needed to follow up on new pulsar discoveries.

Keywords

Cite

@article{arxiv.1802.07211,
  title  = {An algorithm for determining the rotation count of pulsars},
  author = {Paulo C. C. Freire and Alessandro Ridolfi},
  journal= {arXiv preprint arXiv:1802.07211},
  year   = {2018}
}

Comments

13 pages in MNRAS emulation format, 7 figures. Accepted for publication in MNRAS

R2 v1 2026-06-23T00:27:54.838Z