Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A Thorough Investigation of Distance and Age of the Pulsar Wind Nebula
  3C58   A growing number of researchers present evidence that the pulsar wind nebula
3C58 is much older than predicted by its proposed connection to the historical
supernova of A.D. 1181. There is also a great diversity of arguments. The
strongest of these arguments rely heavily on the assumed distance of 3.2 kpc
determined with HI absorption measurements. This publication aims at
determining a more accurate distance for 3C58 and re-evaluating the arguments
for a larger age. I have re-visited the distance determination of 3C58 based on
new HI data from the Canadian Galactic Plane Survey and our recent improvements
in the knowledge of the rotation curve of the outer Milky Way Galaxy. I have
also used newly determined distances to objects in the neighbourhood, which are
based on direct measurements by trigonometric parallax. I have derived a new
more reliable distance estimate of 2 kpc for 3C58. This makes the connection
between the pulsar wind nebula and the historical event from A.D. 1181 once
again much more viable.

37
The categories of this paper are: supr-con
7
The categories of this paper are: hep-th
23
The categories of this paper are: solv-int
12
The categories of this paper are: nucl-th
11
The categories of this paper are: hep-lat
21
The categories of this paper are: adap-org
32
The categories of this paper are: atom-ph
24
The categories of this paper are: dg-ga
35
The categories of this paper are: mtrl-th
3
The categories of this paper are: physics
2
The categories of this paper are: math
36
The categories of this paper are: cmp-lg
22
The categories of this paper are: chao-dyn
14
The categories of this paper are: math-ph
29
The categories of this paper are: funct-an
31
The categories of this paper are: ao-sci