Internal shock model for the X-ray flares of Swift J1644+57
arXiv:1112.4038 · doi:10.1111/j.1365-2966.2012.20392.x
Abstract
Swift J1644+57 is an unusual transient event, likely powered by the tidal disruption of a star by a massive black hole. There are multiple short timescales X-ray flares were seen over a span of several days. We propose that these flares could be produced by internal shocks. In the internal shock model, the forward and reverse shocks are produced by collisions between relativistic shells ejected from central engine. The synchrotron emission from the forward and reverse shocks could dominate at two quite different energy bands under some conditions, the relativistic reverse shock dominates the X-ray emission and the Newtonian forward shock dominates the infrared and optical emission. We show that the spectral energy distribution of Swift J1644+57 could be explained by internal shock model.
6 pages, 3 figures, accepted for publication in MNRAS
References in corpus (10)
- A relativistic jetted outburst from a massive black hole fed by a tidally disrupted star
- Discovery of the Onset of Rapid Accretion by a Dormant Massive Black Hole
- The Birth of a Relativistic Outflow in the Unusual γ-ray Transient Swift J164449.3+573451
- An extremely luminous panchromatic outburst from the nucleus of a distant galaxy
- Radio transients from stellar tidal disruption by massive black holes
- Swift J1644+57: A White Dwarf Tidally Disrupted by a 10^4 M_{odot} Black Hole?
- High energy gamma-ray emission from Gamma-Ray Bursts -- before GLAST
- GRB 110328A/Swift J164449.3+573451: The Tidal Obliteration of a Deeply Plunging Star?
- Sw 1644+57/GRB 110328A: the physical origin and the composition of the relativistic outflow
- VERITAS Observations of the Unusual Extragalactic Transient Swift J164449.3+573451