signal processing; high contrast imaging; high angular resolution; optimisation; model fitting; universal; self-calibration; statistical analysis
Abstract :
[en] Nulling interferometry is a powerful observing technique to reach exoplanets and circumstellar dust at separations too small for direct imaging with single-dish telescopes and too large for indirect methods. With near-future instrumentation, it bears the potential to detect young, hot planets near the snow lines of their host stars. A future space mission could detect and characterize a large number of rocky, habitable-zone planets around nearby stars at thermal-infrared wavelengths. The null self-calibration is a method aiming at modelling the statistical distribution of the nulled signal. It has proven to be more sensitive and accurate than average-based data reduction methods in nulling interferometry. This statistical approach opens the possibility of designing a GPU-based Python package to reduce the data from any of these instruments, by simply providing the data and a simulator of the instrument. GRIP is a toolbox to reduce nulling and interferometric data based on the statistical self-calibration method. In this article, we present the main features of GRIP as well as applications on real data.
Research Center/Unit :
STAR - Space sciences, Technologies and Astrophysics Research - ULiège
Disciplines :
Physics
Author, co-author :
Martinod, Marc-Antoine; Katholieke University of Leuven, Belgium
Defrère, Denis; Katholieke University of Leuven, Belgium
Laugier, Romain; Katholieke University of Leuven, Belgium
Ertel, Steve; University of Arizona, Department of Astronomy and Steward Observatory
Absil, Olivier ; Université de Liège - ULiège > Département d'astrophysique, géophysique et océanographie (AGO)
Norris, Barnaby; University of Sydney, Australia
Garreau, Germain; Katholieke University of Leuven, Belgium
Mennesson, Bertrand; Jet Propulsion Laboratory
Language :
English
Title :
Generic data reduction for nulling interferometry package: the grip of a single data reduction package on all the nulling interferometers
ERC - European Research Council F.R.S.-FNRS - Fonds de la Recherche Scientifique European Union
Commentary :
Copyright 2023 Society of Photo-Optical Instrumentation Engineers. One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited. https://www.spiedigitallibrary.org/conference-proceedings-of-spie/13095/3017506/Generic-data-reduction-for-nulling-interferometry-package--the-grip/10.1117/12.3017506.short
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