Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Observations of a possible new soft gamma repeater, SGR1801-23   We report on two observations of a soft bursting source in 1997 June, whose
time histories and energy spectra are consistent with those of the soft gamma
repeaters. The source can only be localized to an ~3.8 degree long error box in
the direction of the Galactic center, whose area is ~ 80 sq. arcmin. The
location of the source, while not consistent with that of any of the four known
soft repeaters, is consistent with those of several known and possible
supernova remnants.

26
The categories of this paper are: bayes-an
3
The categories of this paper are: physics
33
The categories of this paper are: plasm-ph
28
The categories of this paper are: alg-geom
5
The categories of this paper are: gr-qc
25
The categories of this paper are: patt-sol
22
The categories of this paper are: chao-dyn
21
The categories of this paper are: adap-org
24
The categories of this paper are: dg-ga
32
The categories of this paper are: atom-ph
13
The categories of this paper are: quant-ph
36
The categories of this paper are: cmp-lg
35
The categories of this paper are: mtrl-th
2
The categories of this paper are: math
37
The categories of this paper are: supr-con
23
The categories of this paper are: solv-int