Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Photospheric Emission From Variable Engine Gamma Ray Burst Simulations   By coupling radiation transfer calculations to hydrodynamic simulations,
there have been major advancements in understanding the long Gamma Ray Burst
(LGRB) prompt emission. Building upon these achievements, we present an
analysis of photospheric emission acquired by using the Monte Carlo Radiation
Transfer (MCRaT) code on hydrodynamic simulations with variable jet profiles.
MCRaT propagates and Compton scatters individual photons that have been
injected into the collimated outflow in order to produce synthetic light curves
and spectra. These light curves and spectra allow us to compare our results to
LGRB observational data. We find excellent agreement between our fitted time
resolved $\beta$ parameters and those that are observed. Additionally, our
simulations show that photospheric emission, under certain conditions, is able
to create the observationally expected Band $\alpha$ parameter. Finally, we
show that the simulations are consistent with the Golenetskii correlation but
exhibit some strain with the Amati and Yonetoku correlations.

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The categories of this paper are: cond-mat
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The categories of this paper are: quant-ph
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The categories of this paper are: hep-lat
9
The categories of this paper are: nlin
34
The categories of this paper are: chem-ph
22
The categories of this paper are: chao-dyn
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The categories of this paper are: acc-phys
23
The categories of this paper are: solv-int
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The categories of this paper are: hep-ph
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The categories of this paper are: hep-ex
26
The categories of this paper are: bayes-an
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The categories of this paper are: cs
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The categories of this paper are: supr-con
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The categories of this paper are: math-ph
10
The categories of this paper are: q-bio
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The categories of this paper are: physics