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|Title:||Some constraints on the evolutionary history of the binary pulsar PSR 1913+16|
van den Heuvel, E.P.J.
Stellar magnetic fields
Stellar mass accretion
|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.|
|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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