scholarly journals Measurement of High Energy Neutrino–Nucleon Cross Section and Astrophysical Neutrino Flux Anisotropy Study of Cascade Channel with IceCube

Author(s):  
Yiqian Xu ◽  
2008 ◽  
Vol 77 (4) ◽  
Author(s):  
E. Borriello ◽  
A. Cuoco ◽  
G. Mangano ◽  
G. Miele ◽  
S. Pastor ◽  
...  

Author(s):  
Carsten Rott

AbstractThe dream of observing our universe through neutrinos is rapidly becoming a reality. More than three decades after the first observation of neutrinos from beyond our solar system associated with Supernova SN1987A, neutrino astronomy is in the midst of a revolution. Extraterrestrial neutrinos are now routinely detected, following the discovery of a high-energy diffuse astrophysical neutrino flux in 2013. The detection of a high-energy neutrino in coincidence with a flaring blazar in 2017 has brought the field rapidly into the multi-messenger science era. The latest developments in the field of neutrino astronomy are reviewed and prospects with current and future detectors discussed. Particular emphasis is put on domestic programs in neutrino astronomy and the possibility to construct a large neutrino observatory in Korea.


Science ◽  
2018 ◽  
Vol 361 (6398) ◽  
pp. 147-151 ◽  
Author(s):  
◽  
Mark Aartsen ◽  
Markus Ackermann ◽  
Jenni Adams ◽  
Juan Antonio Aguilar ◽  
...  

A high-energy neutrino event detected by IceCube on 22 September 2017 was coincident in direction and time with a gamma-ray flare from the blazar TXS 0506+056. Prompted by this association, we investigated 9.5 years of IceCube neutrino observations to search for excess emission at the position of the blazar. We found an excess of high-energy neutrino events, with respect to atmospheric backgrounds, at that position between September 2014 and March 2015. Allowing for time-variable flux, this constitutes 3.5σ evidence for neutrino emission from the direction of TXS 0506+056, independent of and prior to the 2017 flaring episode. This suggests that blazars are identifiable sources of the high-energy astrophysical neutrino flux.


Pramana ◽  
2012 ◽  
Vol 79 (5) ◽  
pp. 1301-1308 ◽  
Author(s):  
A COOPER-SARKAR ◽  
P MERTSCH ◽  
S SARKAR

2019 ◽  
Vol 207 ◽  
pp. 02001
Author(s):  
Anna Franckowiak

In September 22, 2017, IceCube released a public alert announcing the detection of a 290 TeV neutrino track event with an angular uncertainty of one square degree (90% containment). A multi-messenger follow-up campaign was initiated resulting in the detection of a GeV gamma-ray flare by the Fermi Large Area Telescope positionally consistent with the location of the known Bl Lac object, TXS 0506+056 , located only 0.1 degrees from the best-fit neutrino position. The probability of finding a GeV gamma-ray flare in coincidence with a high-energy neutrino event assuming a correlation of the neutrino flux with the gamma-ray energy flux in the energy band between 1 and 100 GeV was calculated to be 3σ (after trials correction). Following the detection of the flaring blazar the imaging air Cherenkov telescope MAGIC detected the source for the first time in the > 100 GeV gamma-ray band. The activity of the source was confirmed in X-ray, optical and radio wavelength. Several groups have developed lepto-hadronic models which succeed to explain the multi-messenger spectral energy distribution.


1990 ◽  
Vol 331 (1) ◽  
pp. 153-172 ◽  
Author(s):  
Jane H. MacGibbon ◽  
Robert H. Brandenberger

2015 ◽  
Vol 70 ◽  
pp. 62-80 ◽  
Author(s):  
P. Allison ◽  
J. Auffenberg ◽  
R. Bard ◽  
J.J. Beatty ◽  
D.Z. Besson ◽  
...  

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