The FAST Galactic Plane Pulsar Snapshot Survey -- V. PSR J1901+0658 in a double neutron star system

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Bibliographic Details
Main Authors:	Su, W. Q., Han, J. L., Yang, Z. L., Wang, P. F., Yuan, J. P., Wang, C., Zhou, D. J., Wang, T., Yan, Y., Jing, W. C., Cai, N. N., Xie, L., Xu, J., Wang, H. G., Xu, R. X., You, X. P.
Format:	Preprint
Published:	2024
Subjects:	High Energy Astrophysical Phenomena
Online Access:	Acceder al recurso
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_version_	1866909179764015104
author	Su, W. Q. Han, J. L. Yang, Z. L. Wang, P. F. Yuan, J. P. Wang, C. Zhou, D. J. Wang, T. Yan, Y. Jing, W. C. Cai, N. N. Xie, L. Xu, J. Wang, H. G. Xu, R. X. You, X. P.
author_facet	Su, W. Q. Han, J. L. Yang, Z. L. Wang, P. F. Yuan, J. P. Wang, C. Zhou, D. J. Wang, T. Yan, Y. Jing, W. C. Cai, N. N. Xie, L. Xu, J. Wang, H. G. Xu, R. X. You, X. P.
contents	Double neutron star (DNS) systems offer excellent opportunities to test gravity theories. We report the timing results of PSR J1901+0658, the first pulsar discovered in the FAST Galactic Plane Pulsar Snapshot (GPPS) Survey. Based on timing observations by FAST over 5 yr, we obtain the phase-coherent timing solutions and derive the precise measurements of its position, spin parameters, orbital parameters, and dispersion measure. It has a period of 75.7 ms, a period derivative of 2.169(6)$\times 10^{-19}$ s s$^{-1}$, and a characteristic age of 5.5 Gyr. This pulsar is in an orbit with a period of 14.45 d and an eccentricity of 0.366. One post-Keplerian parameter, periastron advance, has been well-measured as being 0.00531(9) deg yr$^{-1}$, from which the total mass of this system is derived to be 2.79(7) M$_{\odot}$. The pulsar has the mass upper limit of 1.68 M$_{\odot}$, so the lower limit for the companion mass is 1.11 M$_{\odot}$. Because PSR J1901+0658 is a partially recycled pulsar in an eccentric binary orbit with such a large companion mass, it should be in a DNS system according to the evolution history of the binary system.
format	Preprint
id	arxiv_https___arxiv_org_abs_2403_11635
institution	arXiv
publishDate	2024
record_format	arxiv
spellingShingle	The FAST Galactic Plane Pulsar Snapshot Survey -- V. PSR J1901+0658 in a double neutron star system Su, W. Q. Han, J. L. Yang, Z. L. Wang, P. F. Yuan, J. P. Wang, C. Zhou, D. J. Wang, T. Yan, Y. Jing, W. C. Cai, N. N. Xie, L. Xu, J. Wang, H. G. Xu, R. X. You, X. P. High Energy Astrophysical Phenomena Double neutron star (DNS) systems offer excellent opportunities to test gravity theories. We report the timing results of PSR J1901+0658, the first pulsar discovered in the FAST Galactic Plane Pulsar Snapshot (GPPS) Survey. Based on timing observations by FAST over 5 yr, we obtain the phase-coherent timing solutions and derive the precise measurements of its position, spin parameters, orbital parameters, and dispersion measure. It has a period of 75.7 ms, a period derivative of 2.169(6)$\times 10^{-19}$ s s$^{-1}$, and a characteristic age of 5.5 Gyr. This pulsar is in an orbit with a period of 14.45 d and an eccentricity of 0.366. One post-Keplerian parameter, periastron advance, has been well-measured as being 0.00531(9) deg yr$^{-1}$, from which the total mass of this system is derived to be 2.79(7) M$_{\odot}$. The pulsar has the mass upper limit of 1.68 M$_{\odot}$, so the lower limit for the companion mass is 1.11 M$_{\odot}$. Because PSR J1901+0658 is a partially recycled pulsar in an eccentric binary orbit with such a large companion mass, it should be in a DNS system according to the evolution history of the binary system.
title	The FAST Galactic Plane Pulsar Snapshot Survey -- V. PSR J1901+0658 in a double neutron star system
topic	High Energy Astrophysical Phenomena
url	https://arxiv.org/abs/2403.11635