Thursday, February 28, 2019, 16:00
WHGA Auditorium
Anna Franckowiak, DESY Zeuthen
Abstract:
The recent discovery of high-energy astrophysical neutrinos has opened a
new window to the Universe. Identifying the sources of those neutrinos
is the most pressing question in the new field of neutrino astronomy.
Combining neutrino data with electromagnetic measurements in
a multi-messenger approach increases the sensitivity to identify
the neutrino sources and helps to solve long-standing problems in
astrophysics such as the origin of cosmic rays.
A first compelling candidate was identified on September 22, 2017, when the IceCube Neutrino Observatory observed an extremely high-energy neutrino, IceCube-170922, in spatial and temporal coincidence with a gamma-ray flaring blazar, TXS 0506+056, monitored by the Fermi Large Area Telescope. The coincidence triggered a large follow-up campaign in a broad wavelength band.
In this talk I will review the recent progress in multi-messenger
astronomy using neutrino data with a focus on the candidate source, TXS
0506+056.