Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Comparison of VSB from BATSE, KONUS and Swift   We show the locations of the SWIFT short hard bursts (SHB) with afterglows on
the Galactic map and compare with the very short bursts (VSB) BATSE events. As
we have pointed out before, there is an excess of events in the Galactic map of
BATSE VSB events. We note, that none of VSB SWIFT era events fall into this
cluster. More SWIFT events are needed to check this claim. We also report a new
study with KONUS data of the VSB sample with an average energy above 90 keV
showing a clear excess of events below 100 ms duration (T_90) that have large
mean energy photons. We suggest that VSB themselves consists of two subclasses:
a fraction of events have peculiar distribution properties and have no
detectable counter parts, as might be expected for exotic sources such as
Primordial Black Holes.

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The categories of this paper are: mtrl-th
31
The categories of this paper are: ao-sci
9
The categories of this paper are: nlin
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The categories of this paper are: bayes-an
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The categories of this paper are: funct-an
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The categories of this paper are: solv-int
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The categories of this paper are: adap-org
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The categories of this paper are: chao-dyn
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The categories of this paper are: comp-gas
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The categories of this paper are: math-ph
5
The categories of this paper are: gr-qc
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The categories of this paper are: nucl-th
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The categories of this paper are: q-bio
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The categories of this paper are: plasm-ph
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The categories of this paper are: acc-phys
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The categories of this paper are: quant-ph