The PSR J0514-4002A binary system in NGC 1851

2004/04/05 by P. C. C. Freire, Freire, P. C. C., Y. Gupta +6
Earth and Planetary Sciences · Physics and Astronomy · #Geophysics and Gravity Measurements #Pulsars and Gravitational Waves Research #Stellar, planetary, and galactic studies #astro-ph

paper · pdf · doi:10.48550/arxiv.astro-ph/0404104

6 pages, 3 figures, to be published in the proceedings of the "Binary Pulsars" Conference, Aspen, January 2004

arxiv created 2004/04/05 · arxiv updated 2009/12/01

Abstract

Using the Giant Metrewave Radio Telescope (GMRT), we have discovered PSR J0514-4002A, a binary millisecond pulsar in the globular cluster NGC 1851. This pulsar has a rotational period of 4.99 ms and the most eccentric pulsar orbit yet found: e = 0.89. The orbital period is 18.8 days, and companion has a minimum mass of 0.9 M_sun; its nature is presently unclear. After accreting matter from a low-mass stellar companion, this pulsar exchanged it for its more massive present companion. This system presents the strongest evidence to date of such a process.

Related

• NGC 1851A: Revealing an ongoing three-body encounter in a dense globular cluster
• PSR J0210+5845; An ultra wide binary pulsar with a B6V main-sequence star companion
• A pulsar-helium star compact binary system formed by common envelope evolution
• Green Bank Telescope Discovery of Two Binary Millisecond Pulsars in the Globular Cluster M30
• The Highly Relativistic Binary Pulsar PSR J0737-3039A: Discovery and Implications