Ejection of pulsars and binaries to the outskirts of globular clusters

Details Ejection of pulsars and binaries to the outskirts of globular clusters Ejection of pulsars and binaries to the outskirts of globular clusters

Jan 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991natur.349..220p&link_type=abstract

Nature (ISSN 0028-0836), vol. 349, Jan. 17, 1991, p. 220-223. Research supported by NSF, Digital Equipment Corp., and Alfred P.

Computer Science

75

Binary Stars, Globular Clusters, Interacting Galaxies, Pulsars, Milky Way Galaxy, Neutron Stars, Three Body Problem

Scientific paper

It is shown here that three body interactions in the core of a globular cluster can explain why the binary pulsar 2127 + 11C in the cluster M15 is now far from the cluster core. A suitable encounter could have given the pulsar enough velocity to eject it to its present position, and also replaced its original stellar companion with a neutron star. For ejection of SPR2127 + 11C to be likely, the core of M15 must be composed of heavy degenerate stars at a density greater than 10 to the 7th/cu pc, maintained for more than about 100 million yr.

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