Capabilities of future intensity interferometers for observing fast-rotating stars: imaging with two- and three-telescope correlations
arXiv:1507.07635 · doi:10.1093/mnras/stv1719
Abstract
Future large arrays of telescopes, used as intensity interferometers, can be used to image the surfaces of stars with unprecedented angular resolution. Fast-rotating, hot stars are particularly attractive targets for intensity interferometry since shorter (blue) wavelength observations do not pose additional challenges. Starting from realistic surface brightness simulations of fast-rotating stars, we discuss the capabilities of future intensity interferometers for imaging effects such as gravity darkening and rotational deformation. We find that two-telescope intensity correlation data allow reasonably good imaging of these phenomena, but can be improved with additional higher order (e.g. three-telescope) correlation data, which contain some Fourier phase information.
Accepted for publication in MNRAS. 8 pages, 5 figures
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- I3T: Intensity Interferometry Imaging Telescope
- Convection in Oblate Solar-Type Stars
- Comparing Different Approaches for Stellar Intensity Interferometry
- Stellar intensity interferometry in the photon-counting regime
- Ab Initio Spatial Phase Retrieval via Intensity Triple Correlations
- Radius measurement in binary stars: simulations of intensity interferometry