Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: New Evidence for the Cosmological Origin of Gama-Ray Bursts   We compare the burst distribution of the new (2B) BATSE catalogue to a
cosmological distribution. We find that the distribution is insensitive to
cosmological parameters such as Omega and Lambda and to the width of the bursts
luminosity function. The maximal red shift of the long bursts is ~2.1 (assuming
no evolution) while Zm(long) of the short bursts is significantly lower
Zm(short) =~ 0.5 In agreement with this relatively nearby origin of the short
burst we find an indication that these bursts are correlated ( >=2 sigma level
at 10 degrees) with Abell clusters. This is the first known correlation of the
bursts with any other astrophysical population and if confirmed by further
observations it will provides additional evidence for the cosmological origin
of those bursts.

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The categories of this paper are: hep-ph
14
The categories of this paper are: math-ph
7
The categories of this paper are: hep-th
34
The categories of this paper are: chem-ph
12
The categories of this paper are: nucl-th
29
The categories of this paper are: funct-an
17
The categories of this paper are: q-fin
15
The categories of this paper are: nucl-ex
19
The categories of this paper are: eess
20
The categories of this paper are: acc-phys
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The categories of this paper are: q-bio
33
The categories of this paper are: plasm-ph
25
The categories of this paper are: patt-sol
36
The categories of this paper are: cmp-lg
16
The categories of this paper are: stat
3
The categories of this paper are: physics