Optical observations of IGR J00291+5934 in the post outburst phase

M. T. Reynolds, P. Elebert, P. J. Callanan, B. Field, P. Tuite, M. A.P. Torres, D. Steeghs, P. M. Garnavich, D. M. Terndrup, A. V. Filippenko, R. J. Foley, E. T. Harlaftis

Research output: Contribution to journalArticlepeer-review


We present optical observations of the newly discovered accretion powered millisecond pulsar IGR J00291+5934, undertaken in the weeks following its outburst on 2nd December 2004. The decay to quiescence is seen to be highly variable with no indication of a modulation on the ∼2.46 hr orbital period apparent in the data, consistent with a system at low inclination. We also have a single Keck LRIS spectrum of the companion to IGR J00291+5934 taken 10 days after outburst. Strong hydrogen and helium emission lines are observed confirming the identity of the counterpart.

Original languageEnglish (US)
Pages (from-to)80-81
Number of pages2
JournalProceedings of the International Astronomical Union
Issue numberS230
StatePublished - 2005


  • Pulsars: individual (IGR J00291+5934)
  • X-rays: binaries

ASJC Scopus subject areas

  • Medicine (miscellaneous)
  • Astronomy and Astrophysics
  • Nutrition and Dietetics
  • Public Health, Environmental and Occupational Health
  • Space and Planetary Science


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