Capabilities of future intensity interferometers for observing fast-rotating stars: imaging with two- and three-telescope correlations
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.
Keywords
Cite
@article{arxiv.1507.07635,
title = {Capabilities of future intensity interferometers for observing fast-rotating stars: imaging with two- and three-telescope correlations},
author = {Paul D. Nunez and Armando Domiciano de Souza},
journal= {arXiv preprint arXiv:1507.07635},
year = {2015}
}
Comments
Accepted for publication in MNRAS. 8 pages, 5 figures