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Abstract: The space-time correlations of streams of photons can provide fundamentallynew channels of information about the Universe. Today-s astronomicalobservations essentially measure certain amplitude coherence functions producedby a source. The spatial correlations of wave fields has traditionally beenexploited in Michelson-style amplitude interferometry. However the technologyof the past was largely incapable of fine timing resolution and recordingmultiple beams. When time and space correlations are combined it is possible toachieve spectacular measurements that are impossible by any other means.Stellar intensity interferometry is ripe for development and is one of the fewunexploited mechanisms to obtain potentially revolutionary new information inastronomy. As we discuss below, the modern use of stellar intensityinterferometry can yield unprecedented measures of stellar diameters, binarystars, distance measures including Cepheids, rapidly rotating stars, pulsatingstars, and short-time scale fluctuations that have never been measured before.



Author: C. Barbieri, M.K. Daniel, W.J. de Wit, D. Dravins, H. Jensen, P. Kervella, S. Le Bohec, F. Malbet, P. Nunez, J.P. Ralston, E.N. R

Source: https://arxiv.org/



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