Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: How Does Naked Singularity Look?   There are non-radial null geodesics emanating from the shell focusing
singularity formed at the symmetric center in a spherically symmetric dust
collapse. In this article, assuming the self-similarity in the region filled
with the dust fluid, we study these singular null geodesics in detail. We see
the time evolution of the angular diameter of the central naked singularity and
show that it might be bounded above by the value corresponding to the circular
null geodesic in the Schwarzschild spacetime. We also investigate the angular
frequency of a physical field which propagates along the singular null geodesic
and find that it depends on the impact parameter. Further, we comment on the
non-uniformity of the topology of the central naked singularity.

11
The categories of this paper are: hep-lat
30
The categories of this paper are: q-alg
32
The categories of this paper are: atom-ph
6
The categories of this paper are: astro-ph
18
The categories of this paper are: econ
0
The categories of this paper are: hep-ph
33
The categories of this paper are: plasm-ph
24
The categories of this paper are: dg-ga
35
The categories of this paper are: mtrl-th
9
The categories of this paper are: nlin
10
The categories of this paper are: q-bio
20
The categories of this paper are: acc-phys
34
The categories of this paper are: chem-ph
13
The categories of this paper are: quant-ph
21
The categories of this paper are: adap-org
15
The categories of this paper are: nucl-ex