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

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

doi:10.1017/s1743921306007927

Abstract

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We present optical observations of the newly discovered accretion powered millisecond pulsar IGR J00291+5934, undertaken in the weeks following its outburst on 22.46 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.

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