Kewley, LisaLewis, FRussell, D MJonker, P GLinares, MTudose, VRoche, PClark, J STorres, M A PMaitra, DBassa, C GKewley, Lisa J2015-12-130004-6361http://hdl.handle.net/1885/79409Context. In August 2008, the accreting milli-second X-ray pulsar (AMXP), IGR J00291+5934, underwent an outburst lasting ∼100 days, the first since its discovery in 2004. Aims. We present data from the 2008 double-peaked outburst of IGR J00291+5934 fromKeywords: Accretion , accretion disks; Accretion discs; Duty cycles; Emission mechanism; Hard power; Initial activity; Isaac newton telescope; Keck telescopes; Light curves; Near infra red; Neutron stars; Optical spectra; Periodic modulation; Pulsars: general; Simp Accretion, accretion disks; Pulsars: general; Stars: neutron; X-rays: binaries201010.1051/0004-6361/2010143822016-02-24