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Shall we Observe a Radio Binary Pulsar in SN 1987A?

Published online by Cambridge University Press:  27 September 2017

Qiao G. J.*
Affiliation:
Center of Astronomy and Astrophysics, CCTS (World Laboratory) and Department of Geophysics, Peking University

Abstract

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An induced-collapse model [hereafter IC model; He et al. (1990)] can overcome the problems of the single star model of SN1987A. According to the IC model, there is a possibility that the SN1987A remnant will be a binary system with two neutron stars, one of them (SK-69 202) will have a strong magnetic field and a high surface temperature which favors detection as an X-ray or γ-ray pulsar. If the surface temperature of the neutron star cools down to T = 107 K, a radio binary pulsar is expected. There is also the possibility that an X-ray or γ-ray pulsar will be observed first, and only later will a radio pulsar will be detected.

A newly formed neutron star is thought to have a short (millisecond) period. In this case, the core emission beam is then very large (Qiao 1992) and is thus very likely to swing in the direction of the Earth.

Type
Part V X-ray, γ-ray and millisecond pulsars
Copyright
Copyright © United States Naval Observatory 1992