scholarly journals Searching for VHE gamma-ray emission associated with IceCube astrophysical neutrinos using FACT, H.E.S.S., MAGIC, and VERITAS

2017 ◽  
Author(s):  
Marcos Santander ◽  
Daniela Dorner ◽  
Jonathan Dumm ◽  
Konstancja Satalecka ◽  
Fabian Schüssler ◽  
...  
Keyword(s):  
Gamma Ray ◽  
Astrophysical Neutrinos ◽  
Gamma Ray Emission

scholarly journals Searches for IceCube neutrinos from blazar flares using correlations with gamma-ray lightcurves

2019 ◽  
Vol 207 ◽  
pp. 02007
Author(s):  
Christoph Raab ◽  
Juan Antonio Aguilar Sánchez
Keyword(s):  
Cosmic Rays ◽  
Gamma Rays ◽  
Gamma Ray ◽  
Hadronic Interactions ◽  
Astrophysical Neutrinos ◽  
Gamma Ray Emission ◽  
Selection Of

Blazars have long been considered as accelerator candidates for cosmic rays. In such a scenario, hadronic interactions in the jet would produce neutrinos and gamma rays. Correlating the astrophysical neutrinos detected by IceCube with the gamma-ray emission from blazars could therefore help elucidate the origin of cosmic rays. In our method we focus on periods where blazars show an enhanced gamma-ray flux, as measured by Fermi-LAT, thereby reducing the background of the search. We present results for TXS 0506+056, using nearly 10 years of IceCube data and discuss them in the context of other recent analyses on this source. In addition, we give an outlook on applying this method in a stacked search for the combined emission from a selection of variable Fermi blazars.

A Combined Model for the X‐Ray to Gamma‐Ray Emission of Cygnus X‐1

1998 ◽  
Vol 502 (1) ◽  
pp. 428-436 ◽  
Author(s):  
Igor V. Moskalenko ◽  
Werner Collmar ◽  
Volker Schonfelder
Keyword(s):  
Gamma Ray ◽  
Combined Model ◽  
X Ray ◽  
Gamma Ray Emission

Standardization of 223Ra by live-time anticoincidence counting and gamma-ray emission determination

2021 ◽  
pp. 109559
Author(s):  
R.F.P. Simões ◽  
C.J. da Silva ◽  
R.L. da Silva ◽  
L.V. de Sá ◽  
R. Poledna ◽  
...  
Keyword(s):  
Gamma Ray ◽  
Gamma Ray Emission ◽  
Anticoincidence Counting

scholarly journals Neutrino Astronomy with IceCube

2016 ◽  
Vol 12 (S324) ◽  
pp. 322-329
Author(s):  
Kevin J. Meagher
Keyword(s):  
Real Time ◽  
Gamma Ray ◽  
Galactic Plane ◽  
Galactic Nuclei ◽  
High Energy ◽  
Glacial Ice ◽  
Astrophysical Neutrinos ◽  
Charged Secondary ◽  
Neutrino Astronomy ◽  
The Antarctic

AbstractThe IceCube Neutrino Observatory is a cubic kilometer neutrino telescope located at the Geographic South Pole. Cherenkov radiation emitted by charged secondary particles from neutrino interactions is observed by IceCube using an array of 5160 photomultiplier tubes embedded between a depth of 1.5 km to 2.5 km in the Antarctic glacial ice. The detection of astrophysical neutrinos is a primary goal of IceCube and has now been realized with the discovery of a diffuse, high-energy flux consisting of neutrino events from tens of TeV up to several PeV. Many analyses have been performed to identify the source of these neutrinos: correlations with active galactic nuclei, gamma-ray bursts, and the galactic plane. IceCube also conducts multi-messenger campaigns to alert other observatories of possible neutrino transients in real-time. However, the source of these neutrinos remains elusive as no corresponding electromagnetic counterparts have been identified. This proceeding will give an overview of the detection principles of IceCube, the properties of the observed astrophysical neutrinos, the search for corresponding sources (including real-time searches), and plans for a next-generation neutrino detector, IceCube–Gen2.

scholarly journals Radio jets and gamma-ray emission in radio-silent narrow-line Seyfert 1 galaxies

2018 ◽  
Vol 614 ◽  
pp. L1 ◽  
Author(s):  
A. Lähteenmäki ◽  
E. Järvelä ◽  
V. Ramakrishnan ◽  
M. Tornikoski ◽  
J. Tammi ◽  
...  
Keyword(s):  
Gamma Rays ◽  
Supernova Remnants ◽  
Gamma Ray ◽  
Spiral Galaxies ◽  
Narrow Line ◽  
Radio Jets ◽  
Relativistic Jet ◽  
Gamma Ray Emission

We have detected six narrow-line Seyfert 1 (NLS1) galaxies at 37 GHz that were previously classified as radio silent and two that were classified as radio quiet. These detections reveal the presumption that NLS1 galaxies labelled radio quiet or radio silent and hosted by spiral galaxies are unable to launch jets to be incorrect. The detections are a plausible indicator of the presence of a powerful, most likely relativistic jet because this intensity of emission at 37 GHz cannot be explained by, for example, radiation from supernova remnants. Additionally, one of the detected NLS1 galaxies is a newly discovered source of gamma rays and three others are candidates for future detections.

Formation of the pulsed TeV gamma-ray emission at the light cylinder

2017 ◽  
Author(s):  
S. V. Bogovalov ◽  
F. Aharonian ◽  
D. Khangulyan
Keyword(s):  
Gamma Ray ◽  
Light Cylinder ◽  
Gamma Ray Emission

Erratum: Study of gamma-ray emission by proton beam interaction with injected Boron atoms for future medical imaging applications

2017 ◽  
Vol 12 (04) ◽  
pp. E04001-E04001
Author(s):  
G Petringa ◽  
G.A.P Cirrone ◽  
C Caliri ◽  
G Cuttone ◽  
L Giuffrida ◽  
...  
Keyword(s):  
Medical Imaging ◽  
Proton Beam ◽  
Gamma Ray ◽  
Beam Interaction ◽  
Gamma Ray Emission

scholarly journals EPISODIC TRANSIENT GAMMA-RAY EMISSION FROM THE MICROQUASAR CYGNUS X-1

2010 ◽  
Vol 712 (1) ◽  
pp. L10-L15 ◽  
Author(s):  
S. Sabatini ◽  
M. Tavani ◽  
E. Striani ◽  
A. Bulgarelli ◽  
V. Vittorini ◽  
...  
Keyword(s):  
Gamma Ray ◽  
Gamma Ray Emission
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