RXTE detection of Rapidly Varying Transient Swift J164449.3+573451

Astronomy and Astrophysics – Astronomy

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X-Ray, Gamma Ray, Agn, Black Hole, Blazar, Gamma-Ray Burst, Neutron Star, Transient, Pulsar

Scientific paper

RXTE observed of the X-ray source Swift J164449.3+573451 / GRB 110328A (GCN Circ. 11823, 11824, 11842; ATEL #3242, #3244, #3250) on 2011-03-30 at 04:55 UTC for an exposure of 1.8 ksec. The PCA light curve is characterized by strong variations on a time scale of hundreds of seconds. Variations are a factor of ~2.5x peak to peak (50-125 mCrab 2-10 keV), with r.m.s. variability of 30%. A power spectrum shows red noise stochastic variability (power law with index f-2), although the mHz end of the spectrum is poorly characterized.

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