Observing Gravitational Lenses from Intensity Fluctuations: Experimental Validation of the Technique

Details Observing Gravitational Lenses from Intensity Fluctuations: Experimental Validation of the Technique Observing Gravitational Lenses from Intensity Fluctuations: Experimental Validation of the Technique

2010-09-30

arxiv.org/abs/1009.6167v1

Astronomy and Astrophysics

Astrophysics

Instrumentation and Methods for Astrophysics

Accepted dor publication in MNRAS

Scientific paper

It has been proposed to study gravitational lenses from measurements of the spectrum of the fluctuations of the output current of a quadratic detector. The spatial correlation coefficient of the source is the fundamental parameter of the technique. The experimental work discussed in this article confirms that the correlation coefficient must be evaluated at the frequencies of the spectrum of the current fluctuations. This validates a powerful yet simple technique to find unresolved gravitational lenses and to study the lensing event and the source. The validation is needed before starting the extensive theoretical and observational work that must now follow.

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