Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Observations of Pulsars, PSR 1509-58 and PSR 1259-63, by CANGAROO 3.8 m
  Telescope   The data for VHE (~TeV) gamma rays from young gamma-ray pulsar PSR1509-58
observed in 1996 with the CANGAROO 3.8m Cerenkov imaging telescope are
presented, as well as the additional data from March to June of 1997. The high
spin-down luminosity of the pulsar and the plerionic feature around the pulsar
observed with radio and X-rays suggest that VHE gamma-ray emission is quite
likely above the sensitivity of the CANGAROO telescope. The CANGAROO results on
other pulsars, such as PSR1259-63, are also presented. PSR1259-63 is a highly
eccentric X-ray binary system, which includes a high mass Be companion star,
and a preliminary analysis on the data taken 4 months after the periastron in
1994 suggests emission of VHE gamma rays.

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The categories of this paper are: chem-ph
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The categories of this paper are: hep-th
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The categories of this paper are: q-fin
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The categories of this paper are: econ
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The categories of this paper are: q-bio
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The categories of this paper are: supr-con
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The categories of this paper are: cs
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The categories of this paper are: hep-lat
2
The categories of this paper are: math
5
The categories of this paper are: gr-qc
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The categories of this paper are: chao-dyn
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The categories of this paper are: nucl-ex
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The categories of this paper are: cmp-lg
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The categories of this paper are: dg-ga
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The categories of this paper are: bayes-an
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The categories of this paper are: comp-gas