Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The Optical Luminosity Function of Gamma-ray Bursts deduced from
  ROTSE-III Observations   We present the optical luminosity function (LF) of gamma-ray bursts (GRBs)
estimated from a uniform sample of 58 GRBs from observations with the Robotic
Optical Transient Search Experiment III (ROTSE-III). Our GRB sample is divided
into two sub-samples: detected afterglows (18 GRBs), and those with upper
limits (40 GRBs). The $R$ band fluxes 100s after the onset of the burst for
these two sub-samples are derived. The optical LFs at 100s are fitted by
assuming that the co-moving GRB rate traces the star-formation rate. The
detection function of ROTSE-III is taken into account during the fitting of the
optical LFs by using Monte Carlo simulations. We find that the cumulative
distribution of optical emission at 100s is well-described with an exponential
rise and power-law decay (ERPLD), broken power-law (BPL), and Schechter LFs. A
single power-law (SPL) LF, on the other hand, is ruled out with high
confidence.

7
The categories of this paper are: hep-th
22
The categories of this paper are: chao-dyn
35
The categories of this paper are: mtrl-th
24
The categories of this paper are: dg-ga
14
The categories of this paper are: math-ph
19
The categories of this paper are: eess
9
The categories of this paper are: nlin
8
The categories of this paper are: hep-ex
34
The categories of this paper are: chem-ph
25
The categories of this paper are: patt-sol
11
The categories of this paper are: hep-lat
32
The categories of this paper are: atom-ph
5
The categories of this paper are: gr-qc
33
The categories of this paper are: plasm-ph
36
The categories of this paper are: cmp-lg
21
The categories of this paper are: adap-org