Optical long baseline intensity interferometry: prospects for stellar physics

Research paper by Jean-Pierre Rivet, Farrokh Vakili, Olivier Lai, David Vernet, Mathilde Fouché, William Guerin, Guillaume Labeyrie, Robin Kaiser

Indexed on: 08 Jun '18Published on: 07 Jun '18Published in: Experimental Astronomy


More than sixty years after the first intensity correlation experiments by Hanbury Brown and Twiss, there is renewed interest for intensity interferometry techniques for high angular resolution studies of celestial sources. We report on a successful attempt to measure the bunching peak in the intensity correlation function for bright stellar sources with 1 meter telescopes (I2C project). We propose further improvements of our preliminary experiments of spatial interferometry between two 1 m telescopes, and discuss the possibility to export our method to existing large arrays of telescopes.