The Astrophysical Journal Letters (Jan 2024)
The Discovery of Three Pulsars in the Globular Cluster M15 with FAST
- Yuxiao Wu,
- Zhichen Pan,
- Lei Qian,
- Scott M. Ransom,
- Ralph P. Eatough,
- BoJun Wang,
- Paulo C. C. Freire,
- Kuo Liu,
- Zhen Yan,
- Jintao Luo,
- Liyun Zhang,
- Minghui Li,
- Dejiang Yin,
- Baoda Li,
- Yifeng Li,
- Yinfeng Dai,
- Yaowei Li,
- Xinnan Zhang,
- Tong Liu,
- Yu Pan
Affiliations
- Yuxiao Wu
- School of Science, Chongqing University of Posts and Telecommunications Chongqing, 40000, People's Republic of China ; [email protected]
- Zhichen Pan
- National Astronomical Observatories, Chinese Academy of Sciences , 20A Datun Road, Chaoyang District Beijing, 100101, People's Republic of China; CAS Key Laboratory of FAST, National Astronomical Observatories, Chinese Academy of Sciences , Beijing 100101, People's Republic of China; College of Astronomy and Space Sciences, University of Chinese Academy of Sciences , Beijing 100049, People's Republic of China
- Lei Qian
- ORCiD
- National Astronomical Observatories, Chinese Academy of Sciences , 20A Datun Road, Chaoyang District Beijing, 100101, People's Republic of China; CAS Key Laboratory of FAST, National Astronomical Observatories, Chinese Academy of Sciences , Beijing 100101, People's Republic of China; College of Astronomy and Space Sciences, University of Chinese Academy of Sciences , Beijing 100049, People's Republic of China
- Scott M. Ransom
- ORCiD
- National Radio Astronomy Observatory , Charlottesville, VA 22903, USA
- Ralph P. Eatough
- ORCiD
- National Astronomical Observatories, Chinese Academy of Sciences , 20A Datun Road, Chaoyang District Beijing, 100101, People's Republic of China; Max-Planck-Institut für Radioastronomie , Auf dem Hügel 69 D-53121 Bonn, Germany
- BoJun Wang
- ORCiD
- National Astronomical Observatories, Chinese Academy of Sciences , 20A Datun Road, Chaoyang District Beijing, 100101, People's Republic of China
- Paulo C. C. Freire
- ORCiD
- Max-Planck-Institut für Radioastronomie , Auf dem Hügel 69 D-53121 Bonn, Germany
- Kuo Liu
- ORCiD
- Max-Planck-Institut für Radioastronomie , Auf dem Hügel 69 D-53121 Bonn, Germany; Shanghai Astronomical Observatory , Chinese Academy of Sciences, No. 80 Nandan Road Shanghai, 200030, People's Republic of China
- Zhen Yan
- ORCiD
- Shanghai Astronomical Observatory , Chinese Academy of Sciences, No. 80 Nandan Road Shanghai, 200030, People's Republic of China
- Jintao Luo
- National Time Service Center , Chinese Academy of Sciences, Xi’an, 710600, People's Republic of China
- Liyun Zhang
- College of Physics, Guizhou University , Guiyang, 550025, People's Republic of China
- Minghui Li
- State Key Laboratory of Public Big Data, Guizhou University , Guiyang, 550025, People's Republic of China
- Dejiang Yin
- ORCiD
- College of Physics, Guizhou University , Guiyang, 550025, People's Republic of China
- Baoda Li
- College of Physics, Guizhou University , Guiyang, 550025, People's Republic of China
- Yifeng Li
- National Time Service Center , Chinese Academy of Sciences, Xi’an, 710600, People's Republic of China
- Yinfeng Dai
- College of Physics, Guizhou University , Guiyang, 550025, People's Republic of China
- Yaowei Li
- College of Physics, Guizhou University , Guiyang, 550025, People's Republic of China
- Xinnan Zhang
- State Key Laboratory of Public Big Data, Guizhou University , Guiyang, 550025, People's Republic of China
- Tong Liu
- ORCiD
- National Astronomical Observatories, Chinese Academy of Sciences , 20A Datun Road, Chaoyang District Beijing, 100101, People's Republic of China
- Yu Pan
- ORCiD
- School of Science, Chongqing University of Posts and Telecommunications Chongqing, 40000, People's Republic of China ; [email protected]
- DOI
- https://doi.org/10.3847/2041-8213/ad7b9e
- Journal volume & issue
-
Vol. 974,
no. 2
p. L23
Abstract
We present the discovery of three pulsars in the globular cluster (GC) M15 (NGC 7078) by the Five-hundred-meter Aperture Spherical Radio Telescope. PSR J2129+1210J (M15J) is a millisecond pulsar with a spin period of 11.84 ms and a dispersion measure of 66.68 pc cm ^−3 . Both PSR J2129+1210K and L (M15K and L) are long-period pulsars with spin periods of 1928 ms and 3961 ms, respectively. M15L is the GC pulsar with the longest spin period known. We update the timing solutions of M15A to M15H. As predicted by A. Ridolfi et al., the flux density of M15C keeps decreasing, and the latest detection in our data set was on 2022 December 20. We have also detected M15I’s signal for the first time since its discovery. Current timing suggests that it is an isolated pulsar.
Keywords
