Reference : Effects of atmospheric turbulence on the GENIE nulling interferometer
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Physical, chemical, mathematical & earth Sciences : Space science, astronomy & astrophysics
Effects of atmospheric turbulence on the GENIE nulling interferometer
Absil, Olivier mailto [Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Astroph. extragalactique et observations spatiales (AEOS) >]
Astronomy with High Contrast Imaging II
Aime, Claude
Soummer, Rémi
EDP Sciences
EAS Publications Series, vol. 12
Les Ulis
Deuxièmes Journées d'Imagerie à Très Haute Dynamique et détection d'exoplanètes
du 6 au 10 octobre 2003
Aime C. & Soummer R.
[en] Two competitive design studies for the Ground-based European Nulling Interferometer Experiment (GENIE) have recently been initiated by the European Space Agency and the European Southern Observatory. A major issue in these studies is the influence of atmospheric turbulence on the performance of the instrument, and how atmospheric effects can be compensated in order to reach the goal performance (detection of faint exozodiacal clouds). In this paper, we review the main atmospheric processes affecting a nulling interferometer and discuss possible ways to reduce them by means of real-time control systems. Preliminary performance estimates of GENIE are then presented. The effects of the thermal background and its fluctuations (Absil & Bakker 2004) are not considered here.
Researchers ; Students
Invited talk presented on October 9th, 2013 during the CNRS thematic school "Deuxièmes Journées d'Imagerie à Très Haute Dynamique et détection d'exoplanètes" (presentation in French, proceedings in English)

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