On the transition from accretion-powered to rotation-powered millisecond pulsars

J. Takata*, K. S. Cheng, Ronald E. Taam

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

15 Scopus citations

Abstract

The heating associated with the deposition of γ -rays in an accretion disk is proposed as a mechanism to facilitate the transformation of a low-mass X-ray binary to the radio millisecond pulsar (MSP) phase. The γ -ray emission produced in the outer gap accelerator in the pulsar magnetosphere likely irradiates the surrounding disk, resulting in its heating and the possible escape of matter from the system. We apply the model to PSR J1023+0038, which has recently been discovered as a newly born rotation-poweredMSP. The predicted γ -ray luminosity ∼6 × 1034 erg s -1 can be sufficient to explain the disappearance of the truncated disk existing during the 8 month-2 yr period prior to the 2002 observations of J1023+0038 and the energy input required for the anomalously bright optical emission of its companion star.

Original languageEnglish (US)
Pages (from-to)L68-L72
JournalAstrophysical Journal Letters
Volume723
Issue number1 PART 2
DOIs
StatePublished - Nov 1 2010

Keywords

  • Binaries: close
  • Magnetic fields
  • Stars: neutron

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science

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