Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: On the PDS of GRB light curves   In spite of the complicated behavior in the time domain, long GRBs show a
simpler behavior in the Fourier domain of frequencies, represented by power
density spectra, PDS. Recently, there are some relations found between GRBs
properties and PDS parameters, modeled by power-laws. Among them, the
correlation between peak energy $E_{peak}$ and PDS slope $\alpha$ shows a clear
evidence. In this work we try to understand the origin of this correlation,
making use of synthetic pulses. We find some preliminary evidences that
$E_{peak}-\alpha$ relation can be seen as a new confirmation of the empiric
relations $E_{peak}-L$ and $t_{p}-L$ for GRBs.

17
The categories of this paper are: q-fin
4
The categories of this paper are: cond-mat
10
The categories of this paper are: q-bio
31
The categories of this paper are: ao-sci
3
The categories of this paper are: physics
23
The categories of this paper are: solv-int
22
The categories of this paper are: chao-dyn
28
The categories of this paper are: alg-geom
36
The categories of this paper are: cmp-lg
15
The categories of this paper are: nucl-ex
25
The categories of this paper are: patt-sol
33
The categories of this paper are: plasm-ph
20
The categories of this paper are: acc-phys
0
The categories of this paper are: hep-ph
13
The categories of this paper are: quant-ph
18
The categories of this paper are: econ