Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: GRB Variability-Luminosity Correlation Confirmed   Recently, Guidorzi et al. (2005) expanded the size of the sample of GRBs for
which variabilities and peak luminosities have been measured, from 11 to 32.
They confirm the existence of a correlation, but find a dramatically different
relationship between L and V than had originally been found. We find that this
is the result of improper statistical methodology. When we fit a model to the
data that accommodates both statistical variance (in two dimensions) and sample
variance, we find that L ~ V^3.4(+0.9,-0.6) with a sample variance of
sigma_logV = 0.20(+0.04,-0.04), which is consistent with the original finding
of Reichart et al. (2001) -- L ~ V^3.3(+1.1,-0.9) with a sample variance of
sigma_logV = 0.18(+0.07,-0.05) -- and inconsistent with the finding of Guidorzi
et al. (2005): L ~ V^1.3(+0.8,-0.4) with sample variance assumed to be zero.

18
The categories of this paper are: econ
37
The categories of this paper are: supr-con
31
The categories of this paper are: ao-sci
19
The categories of this paper are: eess
21
The categories of this paper are: adap-org
7
The categories of this paper are: hep-th
20
The categories of this paper are: acc-phys
15
The categories of this paper are: nucl-ex
4
The categories of this paper are: cond-mat
27
The categories of this paper are: comp-gas
16
The categories of this paper are: stat
33
The categories of this paper are: plasm-ph
25
The categories of this paper are: patt-sol
28
The categories of this paper are: alg-geom
36
The categories of this paper are: cmp-lg
29
The categories of this paper are: funct-an