Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Scalar field haloes as gravitational lenses   A non-topological soliton model with a repulsive scalar self-interaction of
the Emden type provides a constant density core,similarly as the empirical
Burkert profile of dark matter haloes. As a further test, we derive the
gravitational lens properties of our model, in particular, the demarcation
curves between `weak' and `strong' lensing. Accordingly, strong lensing with
typically three images is almost three times more probable for our solitonic
model than for the Burkert fit. Moreover, some prospective consequences of a
possible flattening of dark matter haloes are indicated.

29
The categories of this paper are: funct-an
34
The categories of this paper are: chem-ph
14
The categories of this paper are: math-ph
22
The categories of this paper are: chao-dyn
4
The categories of this paper are: cond-mat
30
The categories of this paper are: q-alg
13
The categories of this paper are: quant-ph
35
The categories of this paper are: mtrl-th
12
The categories of this paper are: nucl-th
7
The categories of this paper are: hep-th
17
The categories of this paper are: q-fin
2
The categories of this paper are: math
24
The categories of this paper are: dg-ga
0
The categories of this paper are: hep-ph
26
The categories of this paper are: bayes-an
10
The categories of this paper are: q-bio