scholarly journals Dissecting the region around IceCube-170922A: the blazar TXS 0506+056 as the first cosmic neutrino source

2018 ◽  
Vol 480 (1) ◽  
pp. 192-203 ◽  
Author(s):  
P Padovani ◽  
P Giommi ◽  
E Resconi ◽  
T Glauch ◽  
B Arsioli ◽  
...  
Keyword(s):  
Neutrino Source ◽  
Cosmic Neutrino

scholarly journals Recent Results from the Antares Neutrino Telescope

2019 ◽  
Vol 207 ◽  
pp. 01001
Author(s):  
Antoine Kouchner
Keyword(s):  
Galactic Plane ◽  
Large Fraction ◽  
Neutrino Flux ◽  
High Energy ◽  
Neutrino Telescope ◽  
Point Sources ◽  
Joint Analysis ◽  
Neutrino Source ◽  
Cosmic Neutrino ◽  
The One

Antares, the first undersea neutrino telescope, has been continuously operating since 2007 in the Mediterranean Sea. The transparency of the water allows for a very good angular resolution in the reconstruction of neutrino events of all flavors. This results in an unmatched sensitivity for neutrino source searches, in a large fraction of the Southern Sky, at TeV energies. As a consequence, Antares provides valuable constraints on the origin of the cosmic neutrino flux discovered by the IceCube Collaboration. Based on an all-flavor dataset spanning nine years of operation of the detector, the latest results of Antares searches for neutrino point sources, and for diffuse neutrino emission from the entire sky as well as from several interesting regions such as the Galactic Plane, are presented. Several results have been obtained through a joint analysis with the IceCube Collaboration. Concerning the multi-messenger program, the focus is made on the follow-up searches of IceCube alerts, in particular the one related to the TXS 0506+056 blazar, thought to be the first extragalactic high-energy neutrino source identified so far.

scholarly journals Dissecting the region around IceCube-170922A: the blazar TXS 0506+056 as the first cosmic neutrino source

2019 ◽  
Vol 207 ◽  
pp. 02003
Author(s):  
Theo Glauch ◽  
Paolo Padovani ◽  
Paolo Giommi ◽  
Elisa Resconi ◽  
Bruno Arsioli ◽  
...  
Keyword(s):  
Arrival Time ◽  
Archival Data ◽  
High Flux ◽  
Neutrino Source ◽  
Multi Wavelength ◽  
Cosmic Neutrino ◽  
Hard Spectrum ◽  
Soft Spectrum ◽  
Γ Ray

On MJD 58018 the IceCube neutrino observatory detected a highlyenergetic, well-reconstructed neutrino, IceCube-170922A, at a distance of 0:1° to a γ-ray flaring blazar, TXS 0506+056. Follow-up searches in archival data additionally revealed a larger flare of neutrinos from the same direction. In order to complete the picture we present here a full multi-wavelength study of the region around IceCube-170922A. While we identify also other non-thermal counterpart candidates, we show that all the evidence points to TXS 0506+056 as the dominant neutrino emitter. Additionally, an analysis of all the available Fermi-LAT data indicates a hard spectrum/low flux of TXS 0506+056 during the neutrino flare in contrast to a soft spectrum/high flux at the arrival time of IceCube-170922A. Putting all the pieces together we conclude that the SED of TXS 0506+056 can be energetically reconnected for both neutrino observations.

scholarly journals TXS 0506+056, the first cosmic neutrino source, is not a BL Lac

2019 ◽  
Vol 484 (1) ◽  
pp. L104-L108 ◽  
Author(s):  
P Padovani ◽  
F Oikonomou ◽  
M Petropoulou ◽  
P Giommi ◽  
E Resconi
Keyword(s):  
Neutrino Source ◽  
Bl Lac ◽  
Cosmic Neutrino

scholarly journals LS I +61 303 as a potential neutrino source on the light of magic results

2007 ◽  
Vol 27 (6) ◽  
pp. 500-508 ◽  
Author(s):  
Diego F. Torres ◽  
Francis Halzen
Keyword(s):  
Neutrino Source

Rare cosmic neutrino traced to star-shredding black hole

Science ◽  
2021 ◽  
Vol 371 (6532) ◽  
pp. 872-872
Author(s):  
Daniel Clery
Keyword(s):  
Black Hole ◽  
Cosmic Neutrino

scholarly journals SEARCH FOR NEUTRINO EMISSION FROM GAMMA-RAY SOURCES WITH THE ANTARES TELESCOPE

2012 ◽  
Vol 08 ◽  
pp. 307-310
Author(s):  
C. BIGONGIARI
Keyword(s):  
Gamma Ray ◽  
Neutrino Flux ◽  
Three Dimensional ◽  
Effective Area ◽  
High Energy ◽  
Neutrino Telescope ◽  
Neutrino Detector ◽  
Upper Limits ◽  
Cosmic Neutrino ◽  
Promising Source

ANTARES is the first undersea neutrino detector ever built and presently the neutrino telescope with the largest effective area operating in the Northern Hemisphere. A three-dimensional array of photomultiplier tubes detects the Cherenkov light induced by the muons produced in the interaction of high energy neutrinos with the matter surrounding the detector. The detection of astronomical neutrino sources is one of the main goals of ANTARES. The search for point-like neutrino sources with the ANTARES telescope is described and the preliminary results obtained with data collected from 2007 to 2010 are shown. No cosmic neutrino source has been observed and neutrino flux upper limits have been calculated for the most promising source candidates.

scholarly journals THE DARK-MATTER WORLD: ARE THERE DARK-MATTER GALAXIES?

2012 ◽  
Vol 10 ◽  
pp. 1-12
Author(s):  
W-Y. PAUCHY HWANG
Keyword(s):  
Dark Matter ◽  
Time Span ◽  
Neutrino Masses ◽  
Ordinary Matter ◽  
Cosmic Neutrino Background ◽  
Cosmic Neutrino ◽  
Neutrino Background

We attempt to answer whether neutrinos and antineutrinos, such as those in the cosmic neutrino background, would clusterize among themselves or even with other dark-matter particles, under certain time span, say 1 Gyr. With neutrino masses in place, the similarity with the ordinary matter increases and so is our confidence for neutrino clustering if time is long enough. In particular, the clusterings could happen with some seeds (cf. see the text for definition), the chance in the dark-matter world to form dark-matter galaxies increases. If the dark-matter galaxies would exist in a time span of 1 Gyr, then they might even dictate the formation of the ordinary galaxies (i.e. the dark-matter galaxies get formed first); thus, the implications for the structure of our Universe would be tremendous.

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