The phase alignment of the optical and X-ray emission of PSR B0540-69: A shifty pulsar

Melville P Ulmer*, S. Park, J. P. Finley, J. Middleditch, J. M. Codes

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

4 Scopus citations

Abstract

We report the simultaneous observations in optical (CTIO) and X-ray (RXTE) for PSR B540-69 on November 12, 1996 which reveal that there is a "shift" in the phase-folded light curves. The shift is ∼ 17% of the 50 msec pulsar period and the optical pulse arrives earlier than the X-ray pulse. The uncertainty of better than 0.10 msec in our analysis of Crab pulsar arrival times proves that the detected ∼ 17% offset in the optical pulse of PSR B0540-69 is real.

Original languageEnglish (US)
Pages (from-to)29-32
Number of pages4
JournalAstrophysical Letters and Communications
Volume38
Issue number1-6
StatePublished - Dec 1 1998

Keywords

  • Optical
  • Pulsars
  • Spectra
  • X-rays

ASJC Scopus subject areas

  • Astronomy and Astrophysics

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