Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Strange stars and superbursts at near-Eddington mass accretion rates   Careful assessment of four good superburst candidates for GX 17+2 reveals
that superburst is possible at near Eddington mass accretion rates. For the
other seven stars, where superburst is found, there is the standard model of
burning accumulated carbon from normal type I bursts of the accreting stars.
However, there is the need for carbon, nitrogen and oxygen mass fraction
(Z_{CNO}) which must be larger than Z_{CNO,\odot}, where the latter refers to
the standard value found in the sun. Also it is very difficult to incorporate
GX 17+2 into the standard picture of superbursts. In case of superbursts from
strange stars, arising from broken quark pairs going over to diquarks at the
surface of the star, these problems do not arise. Furthermore there is a
natural explanation for the large value of ~ 1000 for \alpha which is defined
in the literature as the ratio of energy released between normal bursts to the
energy released during the normal burst. In the scenario for superbursts in
strange stars it may be argued that the relatively smaller value of \alpha of ~
440 indicates frequent recurrence of superbursts which is reflected in 4U
1636-53.

32
The categories of this paper are: atom-ph
1
The categories of this paper are: cs
24
The categories of this paper are: dg-ga
10
The categories of this paper are: q-bio
25
The categories of this paper are: patt-sol
35
The categories of this paper are: mtrl-th
34
The categories of this paper are: chem-ph
12
The categories of this paper are: nucl-th
26
The categories of this paper are: bayes-an
3
The categories of this paper are: physics
19
The categories of this paper are: eess
37
The categories of this paper are: supr-con
16
The categories of this paper are: stat
22
The categories of this paper are: chao-dyn
21
The categories of this paper are: adap-org
28
The categories of this paper are: alg-geom