期刊
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
卷 384, 期 4, 页码 1393-1398出版社
OXFORD UNIV PRESS
DOI: 10.1111/j.1365-2966.2007.12635.x
关键词
gravitational waves; binaries : close; stars : neutron
We study the effect of the neutron star spin-kick velocity alignment observed in young radio pulsars on the coalescence rate of binary neutron stars. Two scenarios are considered for neutron star formation: when the kick is always present, and when it is small or absent if a neutron star is formed in a binary system as a result of electron-capture degenerate core collapse. The effect is shown to be especially strong for large kick amplitudes and tight alignments, reducing the expected galactic rate of binary neutron star coalescence compared to calculations with randomly directed kicks. The spin-kick correlation also leads to a much narrower neutron star spin-orbit misalignment.
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