Abstract
We investigate the effect of asymmetric supernova explosions on the orbital parameters of binary systems with a compact component. We relate such explosions to the origin of binary pulsars. The degree of asymmetry of the explosion is represented by the kick velocity gained by the exploding star due to the asymmetric mass ejection. The required kick velocity to produce the observed parameters of the binary pulsar PSR 1913+16 should be larger than ∼80 km s−1 if the mass of the exploding star is larger than ∼4M ⊙. We examine the mean survival probability of the binary system (<f>) for various degrees of asymmetry in the explosion. The rare occurrence of a binary pulsar does not necessarily imply that such a probability is low since not all pulsars have originated in a binary system. Assuming the birth rate of pulsars derived by Taylor and Manchester (1977), we derive that <f> would be as high as 0.25. Such values of <f> can be obtained if the mass of the exploding stars is, in general, not large (≲10M ⊙).
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Sutantyo, W. Asymmetric supernova explosions and the origin of binary pulsars. Astrophys Space Sci 54, 479–488 (1978). https://doi.org/10.1007/BF00639450
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DOI: https://doi.org/10.1007/BF00639450