Speaker
Lucijana Stanic
(University of Zurich)
Description
Intensity interferometry usually treats stars as static, yet Be-star disks rotate and binaries orbit. In Stanic et al. (2026) we showed that such motion breaks the time symmetry of the HBT correlation. On non-zero baselines, the correlation peak shifts away from zero lag, in a direction set by the sense of rotation.
Here we present a tabletop experiment to test this under controlled conditions. A 532 nm laser is made pseudothermal by a rotating diffuser and split by an acousto-optic modulator into an unshifted beam and a beam shifted by 110 MHz. Recombined, the two beams form a travelling interference pattern on two fast photodiodes, a laboratory analogue of drifting speckle. The setup is complete, and first measurements are under way.
Primary authors
Prof.
Christof Aegerter
(University of Zurich)
Lucijana Stanic
(University of Zurich)
Prof.
Prasenjit Saha
(University of Zurich)
