REMOVAL OF SPECTRO-POLARIMETRIC FRINGES BY TWO-DIMENSIONAL PATTERN RECOGNITION

Journal Article · Mon Sep 10 00:00:00 EDT 2012 · Astrophysical Journal

DOI:https://doi.org/10.1088/0004-637X/756/2/194· OSTI ID:22092338

Casini, R.; Judge, P. G. ^[1]; Schad, T. A. ^[2]

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1. High Altitude Observatory, NCAR P.O. Box 3000, Boulder, CO 80307-3000 (United States)
2. Lunar and Planetary Laboratory, University of Arizona, Tucson, AZ 85721 (United States)

We present a pattern-recognition-based approach to the problem of the removal of polarized fringes from spectro-polarimetric data. We demonstrate that two-dimensional principal component analysis can be trained on a given spectro-polarimetric map in order to identify and isolate fringe structures from the spectra. This allows us, in principle, to reconstruct the data without the fringe component, providing an effective and clean solution to the problem. The results presented in this paper point in the direction of revising the way that science and calibration data should be planned for a typical spectro-polarimetric observing run.

• OSTI ID: 22092338
• Journal Information: Astrophysical Journal, Vol. 756, Issue 2; Other Information: Country of input: International Atomic Energy Agency (IAEA); ISSN 0004-637X
• Country of Publication: United States
• Language: English

Related Subjects

79 ASTROPHYSICS
COSMOLOGY AND ASTRONOMY
ASTRONOMY
ASTROPHYSICS
CALIBRATION
MATHEMATICAL SOLUTIONS
PATTERN RECOGNITION
POLARIMETRY
POLARIZATION
TWO-DIMENSIONAL CALCULATIONS