New Timing Results of MSPs from NICER Observations-Reference-Cited by-同舟云学术

New Timing Results of MSPs from NICER Observations

Published:2024-04-07 Issue:4 Volume:10 Page:174
ISSN:2218-1997
Container-title:Universe
language:en
Short-container-title:Universe

Author:

Zheng Shijie¹²^ORCID,Han Dawei¹²,Xu Heng³,Lee Kejia³⁴,Yuan Jianping²⁵,Wang Haoxi¹²,Ge Mingyu¹²,Zhang Liang¹²,Li Yongye¹⁶^ORCID,Yin Yitao¹²,Ma Xiang¹²,Chen Yong¹²,Zhang Shuangnan¹²

Affiliation:

1. Key Laboratory of Particle Astrophysics, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China

2. University of Chinese Academy of Sciences, Chinese Academy of Sciences, Beijing 100049, China

3. National Astronomical Observatory, Chinse Academy of Sciences, Beijing 100101, China

4. Department of Astronomy, School of Physics, Peking University, Beijing 100871, China

5. Xinjiang Astronomical Observatory, Chinese Academy of Sciences, Urumqi 830011, China

6. School of Physics and Materials Science & Institute of Space Science and Technology, Nanchang University, Nanchang 330031, China

Abstract

Millisecond pulsars (MSPs) are known for their long-term stability. Using six years of observations from the Neutron Star Interior Composition Explorer (NICER), we have conducted an in-depth analysis of the X-ray timing results for six MSPs: PSRs B1937+21, B1821-24, J0437-4715, J0030+0451, J0218+4232, and J2124-3358. The timing stability parameter σz has been calculated, revealing remarkable timing precision on the order of 10−14 for PSRs B1937+21 and J0437-4715, and 10−13 for PSRs B1821-24, J0218+4232, and J0030+0451 over a timescale of 1000 days. These findings underscore the feasibility of autonomous in-orbit timekeeping using X-ray observations of MSPs. In addition, the consistency of long-term spin-down noise in the X-ray and radio bands has been investigated by comparison with IPTA radio data.

Funder

National Key R&D Program of China

National Natural Science Foundation of China

China Postdoctoral Science Foundation

National SKA Program of China

Publisher

MDPI AG

Link

https://www.mdpi.com/2218-1997/10/4/174/pdf

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