Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: OGLE-2003-BLG-262: Finite-Source Effects from a Point-Mass Lens   We analyze OGLE-2003-BLG-262, a relatively short, t_E=12.5+-0.1day,
microlensing event generated by a point-mass lens transiting the face of a K
giant source in the Galactic bulge. We use the resulting finite-source effects
to measure the angular Einstein radius, theta_E=195+-17muas, and so constrain
the lens mass to the full-width half-maximum interval 0.08 < M/M_sun < 0.54.
The lens-source relative proper motion is mu_rel = 27+-2 km/s/kpc. Both values
are typical of what is expected for lenses detected toward the bulge. Despite
the short duration of the event, we detect marginal evidence for a "parallax
asymmetry", but argue that this is more likely to be induced by acceleration of
the source, a binary lens, or possibly by statistical fluctuations. Although
OGLE-2003-BLG-262 is only the second published event to date in which the lens
transits the source, such events will become more common with the new OGLE-III
survey in place. We therefore give a detailed account of the analysis of this
event to facilitate the study of future events of this type.

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The categories of this paper are: solv-int
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The categories of this paper are: patt-sol
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The categories of this paper are: adap-org
29
The categories of this paper are: funct-an
1
The categories of this paper are: cs
36
The categories of this paper are: cmp-lg
3
The categories of this paper are: physics
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The categories of this paper are: nlin
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The categories of this paper are: econ
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The categories of this paper are: cond-mat
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The categories of this paper are: math
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The categories of this paper are: plasm-ph
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The categories of this paper are: nucl-ex
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The categories of this paper are: atom-ph
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The categories of this paper are: bayes-an
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The categories of this paper are: math-ph