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FAST Globular Cluster Pulsar Survey: Twenty-Four Pulsars Discovered in Fifteen Globular Clusters

Authors :
Pan, Zhichen
Qian, Lei
Ma, Xiaoyun
Liu, Kuo
Wang, Lin
Luo, Jintao
Yan, Zhen
Ransom, Scott
Lorimer, Duncan
Li, Di
Jiang, Peng
Publication Year :
2021
Publisher :
arXiv, 2021.

Abstract

We present the discovery of 24 pulsars in 15 Globular Clusters (GCs) using the Five-hundred-meter Aperture Spherical radio Telescope (FAST). These include the first pulsar discoveries in M2, M10, and M14. Most of the new systems are either confirmed or likely members of binary systems. M53C, NGC6517H and I are the only three pulsars confirmed to be isolated. M14A is a black widow pulsar with an orbital period of 5.5 hours and a minimum companion mass of 0.016 \Ms. M14E is an eclipsing binary pulsar with an orbital period of 20.3 hours. With the other 8 discoveries that have been reported elsewhere, in total 32 GC pulsars have been discovered by FAST so far. In addition, We detected M3A twice. This was enough to determine that it is a black widow pulsar with an orbital period of 3.3 hours and a minimum companion mass of 0.0125 \Ms.<br />Comment: 12 pages, 2 figures, accepted by ApJL, comments are always welcomed!

Details

Database :
OpenAIRE
Accession number :
edsair.doi.dedup.....70e31a0f2fb17909831ced855d52e2ec
Full Text :
https://doi.org/10.48550/arxiv.2106.08559