Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Anomalous grouping of some short BATSE GRBs   The power spectra of 457 short BATSE bursts were analyzed, focusing on the 64
ms lightcurves' tails in the low energy bands. Using MC simulations, 22 GRBs
were identified with unusually high harmonic power above 0.03 Hz. The sky
distribution of these bursts shows an extraordinarily strong dipole moment with
a 99.994% significance.

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The categories of this paper are: quant-ph
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The categories of this paper are: math-ph
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The categories of this paper are: nlin
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The categories of this paper are: econ
20
The categories of this paper are: acc-phys
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The categories of this paper are: patt-sol
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The categories of this paper are: hep-th
33
The categories of this paper are: plasm-ph
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The categories of this paper are: q-fin
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The categories of this paper are: adap-org
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The categories of this paper are: mtrl-th
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The categories of this paper are: gr-qc
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The categories of this paper are: cond-mat
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The categories of this paper are: comp-gas
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The categories of this paper are: hep-lat
34
The categories of this paper are: chem-ph