Variable jet properties in GRB110721A: Time resolved observations of the jet photosphere

Monthly Notices of the Royal Astronomical Society(2013)

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Abstract
Fermi Gamma-ray Space Telescope observations of GRB 110721A have revealed two emission components from the relativistic jet: emission from the photosphere, peaking at ∼100 keV, and a non-thermal component, which peaks at ∼1000 keV. We use the photospheric component to calculate the properties of the relativistic outflow. We find a strong evolution in the flow properties: the Lorentz factor decreas...
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gamma-ray burst: individual: GRB 110721A
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