Systematic variation of the residual of PSR B1937+21, the trace of its companion star?
| dc.creator | Gong, B. P. | |
| dc.date | 2003-09-23 | |
| dc.date | 2003-09-25 | |
| dc.date.accessioned | 2026-07-07T02:09:43Z | |
| dc.date.available | 2026-07-07T02:09:43Z | |
| dc.description | PSR B1937+21 was the first millisecond pulsar ever measured. Which has been appeared as a singular pulsar. The high-precision observation of this pulsar shows systemic long-term variation in the residual of time of arrivals. This paper modelled the secular variation by the orbital precession induced time delay of a binary pulsar system. The fitting requires that as a binary pulsar, PSR B1937+21 should have small companion star, $m_2\sim 10^{-2}M_{\odot}$, and projected semi-major axis, $x\sim 10^{-4}$s to $10^{-3}$s. Which corresponds to ignorable radial velocity of the pulsar to the line of sight. This might explain why it has been measured as a singular pulsar instead of a binary pulsar. | |
| dc.description | 15 pages, 6 tables, 3 figures | |
| dc.identifier | https://arxiv.org/abs/astro-ph/0309603 | |
| dc.identifier | http://arxiv.org/abs/astro-ph/0309603 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/6536 | |
| dc.subject | Astrophysics | |
| dc.title | Systematic variation of the residual of PSR B1937+21, the trace of its companion star? | |
| dc.type | text |