Probing Neutrino Production in Blazars by Millimeter VLBI

Jul 5, 2023
9 pages
Published in:
  • Galaxies 11 (2023) 4, 84,
  • Galaxies 11 (2023) 84
  • Published: Jul 10, 2023
e-Print:

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Abstract: (MDPI)
The advancement of neutrino observatories has sparked a surge in multi-messenger astronomy. Multiple neutrino associations among blazars are reported while neutrino production sites are located within their central (sub)parsecs. Yet, many questions remain on the nature of those processes. The next generation Event Horizon Telescope (ngEHT) is uniquely positioned for these studies, as its high frequency and resolution can probe both the accretion disk region and the parsec-scale jet. This opens up new opportunities for connecting the two regions and unraveling the proton acceleration and neutrino production in blazars. We outline observational strategies for ngEHT and highlight what it can contribute to the multi-messenger study of blazars.
Note:
  • 9 pages; accepted to Galaxies Special Issue "From Vision to Instrument: Creating a Next-Generation Event Horizon Telescope for a New Era of Black Hole Science"
  • neutrinos
  • active galaxies
  • galaxy jets
  • quasars
  • radio continuum
  • interferometric techniques
  • neutrino: production
  • frequency: high
  • p: acceleration
  • blazar