Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: SN1987A: Revisiting the Data and the Correlation between Neutrino and
  Gravitational Detectors   We re-examine the data taken by the neutrino detectors during the supernova
SN1987A. It is found that the Kamiokande data, in addition to the well known
burst at 7:35 hours UT, show another one at 7:54 hours, with seven pulses in
6.2 seconds. This second burst supports the idea that the duration of the
collapse was much longer than a few seconds, as already suggested by the LSD
detection at 2:56 hours the same day, i.e. four and a half hours earlier. The
correlations between the gravitational wave detectors (Rome and Maryland) and
the neutrino detectors are also revisited. It is shown that the g.w. detectors
exhibit significant correlations with both the LSD and the Kamiokande detectors
over periods of one-two hours that are centered, in both cases, at the LSD
time.

7
The categories of this paper are: hep-th
1
The categories of this paper are: cs
21
The categories of this paper are: adap-org
29
The categories of this paper are: funct-an
34
The categories of this paper are: chem-ph
31
The categories of this paper are: ao-sci
18
The categories of this paper are: econ
37
The categories of this paper are: supr-con
32
The categories of this paper are: atom-ph
11
The categories of this paper are: hep-lat
22
The categories of this paper are: chao-dyn
23
The categories of this paper are: solv-int
15
The categories of this paper are: nucl-ex
24
The categories of this paper are: dg-ga
28
The categories of this paper are: alg-geom
35
The categories of this paper are: mtrl-th