Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A Bayesian Approach to Matching Thermonuclear X-ray Burst Observations
  with Models   We present a new method of matching observations of Type I (thermonuclear)
X-ray bursts with models, comparing the predictions of a semi-analytic ignition
model with X-ray observations of the accretion-powered millisecond pulsar SAX
J1808.4--3658 in outburst. We used a Bayesian analysis approach to marginalise
over the parameters of interest and determine parameters such as fuel
composition, distance/anisotropy factors, neutron star mass and neutron star
radius. Our study includes a treatment of the system inclination effects,
inferring that the rotation axis of the system is inclined
$\left(69^{+4}_{-2}\right)^\circ$ from the observers line of sight, assuming a
flat disc model. This method can be applied to any accreting source that
exhibits Type I X-ray bursts. We find a hydrogen mass fraction of
$0.57^{+0.13}_{-0.14}$ and CNO metallicity of $0.013^{+0.006}_{-0.004}$ for the
accreted fuel is required by the model to match the observed burst energies,
for a distance to the source of $3.3^{+0.3}_{-0.2}\,\mathrm{kpc}$. We infer a
neutron star mass of $1.5^{+0.6}_{-0.3}\,\mathrm{M}_{\odot}$ and radius of
$11.8^{+1.3}_{-0.9}\,\mathrm{km}$ for a surface gravity of
$1.9^{+0.7}_{-0.4}\times10^{14}\,\mathrm{cm}\,\mathrm{s}^{-2}$ for SAX
J1808.4--3658.

33
The categories of this paper are: plasm-ph
7
The categories of this paper are: hep-th
12
The categories of this paper are: nucl-th
29
The categories of this paper are: funct-an
11
The categories of this paper are: hep-lat
25
The categories of this paper are: patt-sol
16
The categories of this paper are: stat
26
The categories of this paper are: bayes-an
4
The categories of this paper are: cond-mat
20
The categories of this paper are: acc-phys
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The categories of this paper are: chem-ph
15
The categories of this paper are: nucl-ex
9
The categories of this paper are: nlin
28
The categories of this paper are: alg-geom
36
The categories of this paper are: cmp-lg
13
The categories of this paper are: quant-ph