Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Bright Giant Pulses from the Crab Nebula Pulsar: Statistical Properties,
  Pulse Broadening and Scattering due to the Nebula   We report observations of Crab giant pulses made with the Australia Telescope
Compact Array and a baseband recorder system, made simultaneously at two
frequencies, 1300 and 1470 MHz. These observations were sensitive to pulses
with amplitudes \ga 3 kJy and widths \ga 0.5 $\mu$s. Our analysis led to the
detection of more than 700 such bright giant pulses over 3 hours, and using
this large sample we investigate their amplitude, width, arrival time and
energy distributions. The brightest pulse detected in our data has a peak
amplitude of $\sim$ 45 kJy and a width of $\sim$ 0.5 $\mu$s, and therefore an
inferred brightness temperature of $\sim 10^{35}$ K. The duration of
giant-pulse emission is typically $\sim$1 $\mu$s, however it can also be as
long as 10 $\mu$s. The pulse shape at a high time resolution (128 ns) shows
rich diversity and complexity in structure and is marked by an unusually low
degree of scattering. We discuss possible implications for scattering due to
the nebula, and for underlying structures and electron densities.

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The categories of this paper are: nucl-ex
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The categories of this paper are: stat
12
The categories of this paper are: nucl-th
4
The categories of this paper are: cond-mat
21
The categories of this paper are: adap-org
30
The categories of this paper are: q-alg
11
The categories of this paper are: hep-lat
27
The categories of this paper are: comp-gas
2
The categories of this paper are: math
32
The categories of this paper are: atom-ph
36
The categories of this paper are: cmp-lg
29
The categories of this paper are: funct-an
0
The categories of this paper are: hep-ph
7
The categories of this paper are: hep-th
26
The categories of this paper are: bayes-an
33
The categories of this paper are: plasm-ph