posted on 2023-05-18, 07:31authored byKrauss, F, Kadler, M, Mannheim, K, Schulz, R, Trustedt, J, Wilms, J, Ojha, R, Ros, E, Anton, G, Baumgartner, W, Beuchert, T, Blanchard, J, Burkel, C, Carpenter, B, Eberl, T, Edwards, PG, Eisenacher, D, Elsasser, D, Fehn, K, Fritsch, U, Gehrels, N, Grafe, C, Grossberger, C, Hase, H, Horiuchi, S, James, C, Kappes, A, Katz, U, Kreikenbohm, A, Kreykenbohm, I, Langejahn, M, Leiter, K, Litzinger, E, James LovellJames Lovell, Muller, C, Phillips, C, Plotz, C, Quick, J, Steinbring, T, Stevens, J, Thompson, DJ, Tzioumis, AK
The IceCube Collaboration has announced the discovery of a neutrino flux in excess of the atmospheric background. Owing to the steeply falling atmospheric background spectrum, events at PeV energies most likely have an extraterrestrial origin. We present the multiwavelength properties of the six radio-brightest blazars that are positionally coincident with these events using contemporaneous data of the TANAMI blazar sample, including high-resolution images and spectral energy distributions. Assuming the X-ray to γ-ray emission originates in the photoproduction of pions by accelerated protons, the integrated predicted neutrino luminosity of these sources is high enough to explain the two detected PeV events.
History
Publication title
Astronomy and Astrophysics
Volume
566
Article number
L7
Number
L7
Pagination
1-5
ISSN
0004-6361
Department/School
School of Natural Sciences
Publisher
EDP Sciences
Place of publication
7, Ave Du Hoggar, Parc D Activites Courtaboeuf, Bp 112, Les Ulis Cedexa, France, F-91944