Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Detection of Stellar Spots from the Observations of Caustic-Crossing
  Binary-Lens Gravitational Microlensing Events   Recently, Heyrovsk\'y & Sasselov (1999) investigated the sensitivity of {\it
single-lens} gravitational microlensing event light curves to small spots and
found that during source transit events spots can cause deviations in
amplification larger than 2%, and thus be detectable. In this paper, we explore
the feasibility of spot detection from the observations of {\it
caustic-crossing binary-lens} microlensing events instead of single-lens
events. For this we investigate the sensitivity of binary-lens event light
curves to spots and compare it to that of single-lens events. From this
investigation, we find that during caustic crossings the fractional
amplification deviations of microlensing light curves from those of spotless
source events are equivalent to the deviations of single-lens events, implying
that spots can also be detected with a similar photometric precision to that
required for spot detection by observing single-lens events. We discuss the
relative advantages of observing caustic-crossing binary-lens events over the
observations of single-lens events in detecting stellar spots.

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The categories of this paper are: acc-phys
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The categories of this paper are: physics
33
The categories of this paper are: plasm-ph
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The categories of this paper are: chao-dyn
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The categories of this paper are: cmp-lg
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The categories of this paper are: hep-lat
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The categories of this paper are: econ
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The categories of this paper are: hep-th
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The categories of this paper are: hep-ex
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The categories of this paper are: q-bio
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The categories of this paper are: solv-int
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The categories of this paper are: ao-sci
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The categories of this paper are: comp-gas
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The categories of this paper are: patt-sol
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The categories of this paper are: dg-ga
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The categories of this paper are: alg-geom