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arXiv:astro-ph/0004200 (astro-ph)
[Submitted on 14 Apr 2000]

Title:Source Reconstruction as an Inverse Problem

Authors:Norman Gray (1), Iain J. Coleman (2) ((1) University of Glasgow, (2) British Antarctic Survey)
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Abstract: Inverse Problem techniques offer powerful tools which deal naturally with marginal data and asymmetric or strongly smoothing kernels, in cases where parameter-fitting methods may be used only with some caution. Although they are typically subject to some bias, they can invert data without requiring one to assume a particular model for the source. The Backus-Gilbert method in particular concentrates on the tradeoff between resolution and stability, and allows one to select an optimal compromise between them. We use these tools to analyse the problem of reconstructing features of the source star in a microlensing event, show that it should be possible to obtain useful information about the star with reasonably obtainable data, and note that the quality of the reconstruction is more sensitive to the number of data points than to the quality of individual ones.
Comments: 8 pages, 3 figures. To be published in "Microlensing 2000, A New Era of Microlensing Astrophysics", eds., J.W. Menzies and P.D. Sackett, ASP Conference Series
Subjects: Astrophysics (astro-ph)
Cite as: arXiv:astro-ph/0004200
  (or arXiv:astro-ph/0004200v1 for this version)
  https://doi.org/10.48550/arXiv.astro-ph/0004200

Submission history

From: Norman Gray [view email]
[v1] Fri, 14 Apr 2000 11:19:53 UTC (21 KB)
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