Title:	Some constraints on the evolutionary history of the binary pulsar PSR 1913+16
Authors:	Srinivasan, G. van den Heuvel, E.P.J.
Keywords:	Binary stars Neutron stars Pulsars Stellar evolution X-ray sources Angular momentum Roche limit Stellar magnetic fields Stellar mass accretion
Issue Date:	Apr-1982
Publisher:	Springer-Verlag
Citation:	Astronomy and Astrophysics, 1982, Vol.108, p143-147.
Abstract:	It is argued that the combination of 0.059 s pulse period and weak surface dipole magnetic field strength of PSR 1913 + 16 is excluded for a newly born pulsar. This yields support to the suggestion that PSR 1913 + 16 obtained its short pulse period during a spiral-in history, in which it underwent heavy accretion of matter with angular momentum from its companion. The shortest possible pulse period compatible with its magnetic field in such a case is approximately 0.04 s. As this spiral-in will have completely circularized the orbit, its presently large orbital eccentricity indicates that a second supernova explosion must have taken place in the system and, consequently, that its companion is also a neutron star (or a black hole). It is argued that the progenitor system was a binary with component masses of at least 8 solar masses. The various possible types of radio pulsars resulting from the evolution of close binaries are discussed.
URI:	http://hdl.handle.net/2289/1599
ISSN:	0004-6361
Alternative Location:	http://adsabs.harvard.edu/cgi-bin/bib_query?1982A&A...108..143S
Copyright:	(1982) by the European Southern Observatory. Scanned images provided by the NASA ADS.
Appears in Collections:	Research Papers (A&A)

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