Journal Article

Imaging submilliarcsecond stellar features with intensity interferometry using air Cherenkov telescope arrays

Paul D. Nuñez, Richard Holmes, David Kieda, Janvida Rou and Stephan LeBohec

in Monthly Notices of the Royal Astronomical Society

Published on behalf of The Royal Astronomical Society

Volume 424, issue 2, pages 1006-1011
Published in print August 2012 | ISSN: 0035-8711
Published online August 2012 | e-ISSN: 1365-2966 | DOI: http://dx.doi.org/10.1111/j.1365-2966.2012.21263.x
Imaging submilliarcsecond stellar features with intensity interferometry using air Cherenkov telescope arrays

Show Summary Details

Preview

Abstract

Recent proposals have been advanced to apply imaging air Cherenkov telescope arrays to stellar intensity interferometry (SII). Of particular interest is the possibility of model-independent image recovery afforded by the good (u, v)-plane coverage of these arrays, as well as recent developments in phase retrieval techniques. The capabilities of these instruments used as SII receivers have already been explored for simple stellar objects, and here the focus is on reconstructing stellar images with non-uniform radiance distributions. We find that hot stars (T > 6000 K) containing hot and/or cool localized regions (ΔT ∼ 500 K) as small as ∼ 0.1 mas can be imaged at short wavelengths (λ = 400 nm).

Keywords: instrumentation: interferometers; techniques: high angular resolution; techniques: image processing; techniques: interferometric; stars: imaging

Journal Article.  4262 words.  Illustrated.

Subjects: Astronomy and Astrophysics

Full text: subscription required

How to subscribe Recommend to my Librarian

Users without a subscription are not able to see the full content. Please, subscribe or login to access all content.