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Intensity Interferometry prospects with the CTAO

Biteau, Jonathan ; Carlile, Colin LU ; Dravins, Dainis LU orcid ; Fiori, Michele ; Hassan, Tarek ; Kieda, Dave ; Lisa, Mike ; Luce, Quentin ; Mitchell, Alison and Saha, Prasenjit , et al. (2025) 39th International Cosmic Ray Conference, ICRC 2025 501.
Abstract

A resolved optical image of a gamma-ray emitter would be of enormous scientific interest. For gamma-ray sources associated with interacting stars (colliding winds or novae), stellar intensity interferometry (SII), envisioned as a second observing mode at the Cherenkov Telescope Array Observatory (CTAO), could yield images of the systems in visible light. Recent radius measurements of massive stars with the current generation of Cherenkov telescopes demonstrate that SII is practical, but a timely and intensive effort is needed before images of interacting stars are possible. Fortunately there is also much interesting stellar astrophysics to do along the way: simultaneous mass and radius measurements, resolving stellar oscillations, and... (More)

A resolved optical image of a gamma-ray emitter would be of enormous scientific interest. For gamma-ray sources associated with interacting stars (colliding winds or novae), stellar intensity interferometry (SII), envisioned as a second observing mode at the Cherenkov Telescope Array Observatory (CTAO), could yield images of the systems in visible light. Recent radius measurements of massive stars with the current generation of Cherenkov telescopes demonstrate that SII is practical, but a timely and intensive effort is needed before images of interacting stars are possible. Fortunately there is also much interesting stellar astrophysics to do along the way: simultaneous mass and radius measurements, resolving stellar oscillations, and imaging outflows from stars. This contribution presents a matrix of the challenges and scientific opportunities for SII at the CTAO.

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organization
publishing date
type
Chapter in Book/Report/Conference proceeding
publication status
published
subject
host publication
Proceedings of Science
volume
501
pages
10 pages
conference name
39th International Cosmic Ray Conference, ICRC 2025
conference location
Geneva, Switzerland
conference dates
2025-07-15 - 2025-07-24
external identifiers
  • scopus:105029015669
DOI
10.22323/1.501.0959
language
English
LU publication?
yes
id
e93e2375-d9c6-49b8-867e-a1053a7f21e7
date added to LUP
2026-02-26 11:08:51
date last changed
2026-02-26 11:09:56
@inproceedings{e93e2375-d9c6-49b8-867e-a1053a7f21e7,
  abstract     = {{<p>A resolved optical image of a gamma-ray emitter would be of enormous scientific interest. For gamma-ray sources associated with interacting stars (colliding winds or novae), stellar intensity interferometry (SII), envisioned as a second observing mode at the Cherenkov Telescope Array Observatory (CTAO), could yield images of the systems in visible light. Recent radius measurements of massive stars with the current generation of Cherenkov telescopes demonstrate that SII is practical, but a timely and intensive effort is needed before images of interacting stars are possible. Fortunately there is also much interesting stellar astrophysics to do along the way: simultaneous mass and radius measurements, resolving stellar oscillations, and imaging outflows from stars. This contribution presents a matrix of the challenges and scientific opportunities for SII at the CTAO.</p>}},
  author       = {{Biteau, Jonathan and Carlile, Colin and Dravins, Dainis and Fiori, Michele and Hassan, Tarek and Kieda, Dave and Lisa, Mike and Luce, Quentin and Mitchell, Alison and Saha, Prasenjit and Spolon, Alessia and Stanic, Lucijana and Vogel, Naomi and Zampieri, Luca and Zmija, Andreas}},
  booktitle    = {{Proceedings of Science}},
  language     = {{eng}},
  title        = {{Intensity Interferometry prospects with the CTAO}},
  url          = {{http://dx.doi.org/10.22323/1.501.0959}},
  doi          = {{10.22323/1.501.0959}},
  volume       = {{501}},
  year         = {{2025}},
}