Optical intensity interferometry observations using the MAGIC imaging atmospheric Cherenkov telescopes-Reference-Cited by-同舟云学术

Optical intensity interferometry observations using the MAGIC imaging atmospheric Cherenkov telescopes

Published:2019-11-13 Issue: Volume: Page:
ISSN:0035-8711
Container-title:Monthly Notices of the Royal Astronomical Society
language:en
Short-container-title:

Author:

Acciari V A¹,Bernardos M I²,Colombo E¹,Contreras J L³,Cortina J²^ORCID,Delgado C²,Díaz C²,Fink D⁴,Mariotti M⁵,Mangano S²,Mirzoyan R⁴,Polo M²,Schweizer T⁴,Will M⁴

Affiliation:

1. Inst. de Astrofísica de Canarias, E-38200 La Laguna & Universidad de La Laguna, Dpto. Astrofísica, E-38206 La Laguna, Spain

2. Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas, E-28040 Madrid, Spain

3. IPARCOS Institute and EMFTEL Department, Universidad Complutense de Madrid E-28040 Madrid, Spain

4. Max-Planck-Institut für Physik, D-80805, Munich, Germany

5. Università di Padova and INFN, I-35131 Padova, Italy

Abstract

Abstract Imaging Atmospheric Cherenkov Telescopes (IACTs) currently in operation feature large mirrors and order of 1 ns time response to signals of a few photo-electrons produced by optical photons. This means that they are ideally suited for optical interferometry observations. Thanks to their sensitivity to visible wavelengths and long baselines optical intensity interferometry with IACTs allows reaching angular resolutions of tens to microarcsec. We have installed a simple optical setup on top of the cameras of the two 17 m diameter MAGIC IACTs and observed coherent fluctuations in the photon intensity measured at the two telescopes for three different stars. The sensitivity is roughly 10 times better than that achieved in the 1970’s with the Narrabri interferometer.

Publisher

Oxford University Press (OUP)

Subject

Space and Planetary Science,Astronomy and Astrophysics

Link

http://academic.oup.com/mnras/advance-article-pdf/doi/10.1093/mnras/stz3171/30700079/stz3171.pdf

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