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  Optical intensity interferometry observations using the MAGIC Imaging Atmospheric Cherenkov Telescopes

Acciari, V., Bernardos, M., Colombo, E., Contreras, J., Cortina, J., De Angelis, A., et al. (2019). Optical intensity interferometry observations using the MAGIC Imaging Atmospheric Cherenkov Telescopes. Monthly Notices of the Royal Astronomical Society, 491, 1540-1547. doi:10.1093/mnras/stz3171.

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Item Permalink: https://hdl.handle.net/21.11116/0000-0005-D72B-9 Version Permalink: https://hdl.handle.net/21.11116/0000-0005-D72C-8
Genre: Journal Article

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 Creators:
Acciari, V.A.1, Author
Bernardos, M.I.1, Author
Colombo, E.1, Author
Contreras, J.L.1, Author
Cortina, J.1, Author
De Angelis, A.1, Author
Delgado, C.1, Author
Díaz, C.1, Author
Fink, D.1, Author
Mariotti, M.1, Author
Mangano, S.1, Author
Mirzoyan, R.1, Author
Polo, M.1, Author
Schweizer, T.1, Author
Will, M.1, Author
Affiliations:
1Max Planck Institute for Physics, Max Planck Society and Cooperation Partners, ou_2253650              

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Free keywords: MAGIC
 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 microarcseconds. We have installed a simple optical setup on top of the cameras of the two 17 m diameter Major Atmospheric Gamma-Ray Imaging Cherenkov (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 1970s with the Narrabri interferometer.

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 Dates: 2019
 Publication Status: Issued
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: -
 Identifiers: Other: MPP-2019-317
URI: https://publications.mppmu.mpg.de/?action=search&mpi=MPP-2019-317
arXiv: arxiv:1911.06029
DOI: 10.1093/mnras/stz3171
 Degree: -

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Title: Monthly Notices of the Royal Astronomical Society
  Abbreviation : Mon.Not.R.Astron.Soc.
Source Genre: Journal
 Creator(s):
Affiliations:
Publ. Info: -
Pages: - Volume / Issue: 491 Sequence Number: - Start / End Page: 1540 - 1547 Identifier: -