I3T: Intensity Interferometry Imaging Telescope
arXiv:2105.07072 · doi:10.1093/mnras/stab1424
Abstract
We propose a new approach, based on the Hanbury Brown and Twiss intensity interferometry, to transform a Cherenkov telescope to its equivalent optical telescope. We show that, based on the use of photonics components borrowed from quantum-optical applications, we can recover spatial details of the observed source down to the diffraction limit of the Cherenkov telescope, set by its diameter at the mean wavelength of observation. For this, we propose to apply aperture synthesis techniques from pairwise and triple correlation of sub-pupil intensities, in order to reconstruct the image of a celestial source from its Fourier moduli and phase information, despite atmospheric turbulence. We examine the sensitivity of the method, i.e. limiting magnitude, and its implementation on existing or future high energy arrays of Cherenkov telescopes. We show that despite its poor optical quality compared to extremely large optical telescopes under construction, a Cherenkov telescope can provide diffraction limited imaging of celestial sources, in particular at the visible, down to violet wavelengths.
arXiv comment8 pages, 7 figures
References in corpus (16)
- Fundamental Parameters of 87 Stars from the Navy Precision Optical Interferometer
- Radiative hydrodynamics simulations of red supergiant stars: II. simulations of convection on Betelgeuse match interferometric observations
- Optical Intensity Interferometry with the Cherenkov Telescope Array
- Radiative hydrodynamics simulations of red supergiant stars. IV gray versus non-gray opacities
- Demonstration of stellar intensity interferometry with the four VERITAS telescopes
- Temporal intensity interferometry: photon bunching on three bright stars
- Optical intensity interferometry observations using the MAGIC imaging atmospheric Cherenkov telescopes
- Intensity interferometry of P Cygni in the H emission line: towards distance calibration of LBV supergiant stars
- Intensity interferometry with more than two detectors?
- Spatial intensity interferometry on three bright stars
- Monte-Carlo simulation of stellar intensity interferometry
- Optical Multi-Channel Intensity Interferometry - or: How To Resolve O-Stars in the Magellanic Clouds
- Capabilities of future intensity interferometers for observing fast-rotating stars: imaging with two- and three-telescope correlations
- Uncrowding R 136 from VLT-SPHERE extreme adaptive optics
- Large scale characterization and calibration strategy of a SiPM-based camera for gamma-ray astronomy
- Towards SiPM camera for current and future generations of Cherenkov telescopes