Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Finite Source Sizes and the Information Content of MACHO-Type Lens
  Search Light Curves   If the dark halo matter is primarily composed of MACHOs toward the lower end
of the possible detection range ($ < 10^{-3}$ $M_{\odot}$) a fraction of the
lens detection events should involve the lens crossing directly in front of the
disk of the background star. Previously, Nemiroff (1987) has shown that each
crossing would create an inflection point in the light curve of the MACHO
event. Such inflection points would allow a measure of the time it took for the
gravitational lens to cross the stellar disk. Given an independent estimate of
the stellar radius by other methods, one could then obtain a more accurate
estimate of the velocity of the lens. This velocity could then, in turn, be
used to obtain a more accurate estimate of the mass range for the MACHO or disk
star doing the lensing.

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The categories of this paper are: q-bio
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The categories of this paper are: funct-an
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The categories of this paper are: adap-org
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The categories of this paper are: patt-sol
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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: supr-con
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The categories of this paper are: nlin
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The categories of this paper are: quant-ph
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The categories of this paper are: solv-int
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The categories of this paper are: plasm-ph
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The categories of this paper are: alg-geom
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The categories of this paper are: chao-dyn
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The categories of this paper are: chem-ph
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The categories of this paper are: nucl-ex
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The categories of this paper are: cmp-lg