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The Astrophysical Journal
Article . 1999 . Peer-reviewed
Data sources: Crossref
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Constraints on Natal Pulsar Kicks from Eccentric Binary Pulsars

Authors: Hughes, A.; Bailes, M.;

Constraints on Natal Pulsar Kicks from Eccentric Binary Pulsars

Abstract

We investigate the expected space velocities and misalignment angles of the eccentric binary pulsars for a range of possible progenitor systems and natal kick models. In particular, the effect of the orbital separation at the instant of supernova is discussed. The results of our simulations, combined with recent proper-motion and misalignment angle measurements, lead us to conclude that, although the known systems generally provide evidence for asymmetric supernovae, none of the proposed natal kick velocity distributions are adequate. Instead, we find that while kicks are required to explain the space velocities of J0045-7319 and B1259-63, a slow kick velocity distribution with σ = 0 km s -1 and μ = 50 km s-1 predicts space velocities that demonstrate the best agreement with observation. The expected misalignment angle distributions for B1534+12, J0045-7319, and B1259-63 favor larger kicks but do not preclude a slow kick velocity distribution. Such a model is, however, inconsistent with the large kicks usually invoked to explain the velocities of single pulsars. We discuss possible means to reconcile the space velocities of eccentric binary pulsars and the velocity distribution of the pulsar population. These include constraining the progenitor systems of binary pulsars to preclude tight post-common-envelope systems and erroneous pulsar velocity measurements due to an inaccurate distance model.

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
22
Top 10%
Top 10%
Average
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