Discovery of a Young Radio Pulsar in a Relativistic Binary Orbit

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dc.creatorKaspi, V. M.
dc.creatorLyne, A. G.
dc.creatorManchester, R. N.
dc.creatorCrawford, F.
dc.creatorCamilo, F.
dc.creatorBell, J. F.
dc.creatorD'Amico, N.
dc.creatorStairs, I. H.
dc.creatorMcKay, N. P. F.
dc.creatorMorris, D. J.
dc.creatorPossenti, A.
dc.date2000-05-10
dc.date2000-05-11
dc.date.accessioned2026-07-07T11:07:56Z
dc.date.available2026-07-07T11:07:56Z
dc.descriptionWe report on the discovery of PSR J1141-6545, a radio pulsar in an eccentric, relativistic 5-hr binary orbit. The pulsar shows no evidence for being recycled, having pulse period P = 394 ms, characteristic age tau_c = 1.4 x 10^6 yr, and inferred surface magnetic dipole field strength B = 1.3 x 10^12 G. From the mass function and measured rate of periastron advance, we determine the total mass in the system to be (2.300 +/- 0.012) solar masses, assuming that the periastron advance is purely relativistic. Under the same assumption, we constrain the pulsar's mass to be M_p < 1.348 solar masses and the companion's mass to be M_c > 0.968 solar masses (both 99% confidence). Given the total system mass and the distribution of measured neutron star masses, the companion is probably a massive white dwarf which formed prior to the birth of the pulsar. Optical observations can test this hypothesis.
dc.description18 pages, 4 figures, Accepted for Publication in ApJ
dc.identifierhttps://arxiv.org/abs/astro-ph/0005214
dc.identifierhttp://arxiv.org/abs/astro-ph/0005214
dc.identifierAstrophys.J.543:321-327,2000
dc.identifierdoi:10.1086/317103
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/189969
dc.subjectAstrophysics
dc.titleDiscovery of a Young Radio Pulsar in a Relativistic Binary Orbit
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