Eta carinae: A multi-messenger source

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Colliding-wind binaries have long been thought to accelerate particles in the shocked wind. Recent detection of a hard γ-ray spectrum by the Fermi-LAT from η Carinae hints to the presence of a hadronic component dominating in the ≈ 10-300 GeV range, presumably from protons accelerated in the shocks and interacting (pp) with particles in the wind. Neutrinos are naturally produced in pp interactions and emitted together with γ rays. Detection of this multi-messenger signal can be very powerful to probe characteristics of the hadronic γ-ray component as well as particle acceleration. We show that detection of high-energy neutrinos from η Carinae by neutrino telescopes can probe the maximum shock-accelerated proton energy in the ≥ 0.1 PeV range.

Original languageEnglish
Article number039
JournalProceedings of Science
Publication statusPublished - 2017
Event5th Annual Conference on High Energy Astrophysics in Southern Africa, HEASA 2017 - Johannesburg, South Africa
Duration: 4 Oct 20176 Oct 2017

ASJC Scopus subject areas

  • Multidisciplinary


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