Article (Scientific journals)
Instrumental stability requirements for exoplanet detection with a nulling interferometer: variability noise as a central issue
Chazelas, Bruno; Brachet, Frank; Bordé, Pascal et al.
2006In Applied Optics, 45, p. 984-992
Peer Reviewed verified by ORBi
 

Files


Full Text
Variab_Noise_v2005-09-02.pdf
Author postprint (329.64 kB)
Download

http://www.opticsinfobase.org/abstract.cfm?URI=ao-45-5-984 - Copyright 2009 Optical Society of America (OSA)


All documents in ORBi are protected by a user license.

Send to



Details



Keywords :
Phased-array imaging systems; Interferometry; Astronomical optics
Abstract :
[en] We revisit the nulling interferometer performances that are needed for direct detection and the spectroscopic analysis of exoplanets, e.g., with the DARWIN [European Space Agency-SCI 12 (2000)] or TPF-I [JPL Publ. 05-5, (2005)] missions. Two types of requirement are found, one concerning the mean value of the instrumental nulling function <nl(lambda)> and another regarding its stability. The stress is usually put on the former. It is stringent at short wavelengths but somewhat relaxed at longer wavelengths. The latter, which we call the variability noise condition, does not usually receive enough attention. It is required regardless of telescope size and stellar distance. The results from three nulling experiments performed in laboratories around the world are reported and compared with the requirements. All three exhibit 1/f noise that is incompatible with the performances required by the mission. As pointed out by Lay [Appl. Opt. 43, 6100-6123 (2004)], this stability problem is not fully solved by modulation techniques. Adequate solutions must be found that are likely to include servo systems using the stellar signal itself as a reference and internal metrology with high stability.
Disciplines :
Space science, astronomy & astrophysics
Author, co-author :
Chazelas, Bruno
Brachet, Frank
Bordé, Pascal
Mennesson, Bertrand
Ollivier, Marc
Absil, Olivier  ;  Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Astroph. extragalactique et observations spatiales (AEOS)
Labèque, Alain
Valette, Claude
Léger, Alain
Language :
English
Title :
Instrumental stability requirements for exoplanet detection with a nulling interferometer: variability noise as a central issue
Publication date :
10 February 2006
Journal title :
Applied Optics
ISSN :
1559-128X
eISSN :
2155-3165
Publisher :
Optical Society of America, Washington, United States - District of Columbia
Volume :
45
Pages :
984-992
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 20 August 2009

Statistics


Number of views
51 (1 by ULiège)
Number of downloads
242 (0 by ULiège)

Scopus citations®
 
21
Scopus citations®
without self-citations
11
OpenCitations
 
12

Bibliography


Similar publications



Contact ORBi