A novel mechanism for creating double pulsars

Steinn Sigurdsson, Lars Hernquist

Research output: Contribution to journalArticle

15 Citations (Scopus)

Abstract

Simulations of encounters between pairs of hard binaries, each containing a neutron star and a mainsequence star, reveal a new formation mechanism for double pulsars in dense cores of globular clusters. In many cases, the two normal stars are disrupted to form a common envelope around the pair of neutron stars, both of which will be spun up to become millisecond pulsars. We predict that a new class of pulsars, double millisecond pulsars, will be discovered in the cores of dense globular clusters. The genesis proceeds through a short-lived double-core common envelope phase, with the envelope ejected in a fast wind. It is possible that the progenitor may also undergo a double X-ray binary phase. Any circular, short-period double pulsar found in the galaxy would necessarily come from disrupted disk clusters, unlike Hulse-Taylor class pulsars or low-mass X-ray binaries which may be ejected from clusters or formed in the galaxy.

Original languageEnglish (US)
JournalAstrophysical Journal
Volume401
Issue number2 PART 2
StatePublished - Dec 20 1992

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pulsars
formation mechanism
envelopes
globular clusters
neutron stars
galaxies
simulation
stars
encounters
x rays

All Science Journal Classification (ASJC) codes

  • Astronomy and Astrophysics
  • Space and Planetary Science

Cite this

Sigurdsson, Steinn ; Hernquist, Lars. / A novel mechanism for creating double pulsars. In: Astrophysical Journal. 1992 ; Vol. 401, No. 2 PART 2.
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A novel mechanism for creating double pulsars. / Sigurdsson, Steinn; Hernquist, Lars.

In: Astrophysical Journal, Vol. 401, No. 2 PART 2, 20.12.1992.

Research output: Contribution to journalArticle

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