scholarly journals Milagro: A TeV gamma-ray monitor of the Northern Hemisphere Sky

2000 ◽  
Author(s):  
B. L. Dingus
Keyword(s):  
Northern Hemisphere ◽  
Gamma Ray

scholarly journals The Search for Muon Neutrinos from Northern Hemisphere Gamma‐Ray Bursts with AMANDA

2008 ◽  
Vol 674 (1) ◽  
pp. 357-370 ◽  
Author(s):  
A. Achterberg ◽  
M. Ackermann ◽  
J. Adams ◽  
J. Ahrens ◽  
K. Andeen ◽  
...  
Keyword(s):  
Northern Hemisphere ◽  
Gamma Ray ◽  
Gamma Ray Bursts ◽  
Muon Neutrinos

TeV Gamma‐Ray Survey of the Northern Hemisphere Sky Using the Milagro Observatory

2004 ◽  
Vol 608 (2) ◽  
pp. 680-685 ◽  
Author(s):  
R. Atkins ◽  
W. Benbow ◽  
D. Berley ◽  
E. Blaufuss ◽  
J. Bussons ◽  
...  
Keyword(s):  
Northern Hemisphere ◽  
Gamma Ray ◽  
Milagro Observatory

scholarly journals OPTICAL SPECTROSCOPIC OBSERVATIONS OF GAMMA-RAY BLAZAR CANDIDATES. V. TNG, KPNO, AND OAN OBSERVATIONS OF BLAZAR CANDIDATES OF UNCERTAIN TYPE IN THE NORTHERN HEMISPHERE

2016 ◽  
Vol 151 (2) ◽  
pp. 32 ◽  
Author(s):  
N. Álvarez Crespo ◽  
N. Masetti ◽  
F. Ricci ◽  
M. Landoni ◽  
V. Patiño-Álvarez ◽  
...  
Keyword(s):  
Northern Hemisphere ◽  
Gamma Ray ◽  
Spectroscopic Observations

Upper limits for Northern Hemisphere 10 to the 15th eV gamma-ray sources

1985 ◽  
Vol 297 ◽  
pp. 145 ◽  
Author(s):  
R. M. Baltrusaitis ◽  
G. L. Cassiday ◽  
R. Cooper ◽  
J. W. Elbert ◽  
P. R. Gerhardy ◽  
...  
Keyword(s):  
Northern Hemisphere ◽  
Gamma Ray ◽  
Upper Limits

Potential neutrino signals in a northern hemisphere neutrino telescope from galactic gamma-ray sources

2007 ◽  
Vol 309 (1-4) ◽  
pp. 429-433 ◽  
Author(s):  
C. Stegmann ◽  
A. Kappes ◽  
J. Hinton ◽  
F. Aharonian
Keyword(s):  
Northern Hemisphere ◽  
Gamma Ray ◽  
Neutrino Telescope

On the possible gamma-ray source in Cygnus

1967 ◽  
Vol 31 ◽  
pp. 469-471
Author(s):  
J. G. Duthie ◽  
M. P. Savedoff ◽  
R. Cobb
Keyword(s):  
Gamma Rays ◽  
Gamma Ray ◽  
Right Ascension

A source of gamma rays has been found at right ascension 20h15m, declination +35°, with an uncertainty of 6° in each coordinate. Its flux is (1·5 ± 0·8) x 10-4photons cm-2sec-1at 100 MeV. Possible identifications are reviewed, but no conclusion is reached. The mechanism producing the radiation is also uncertain.

Solar Flare Energetic Neutral Emission Measurements in the Project Coronas-I

1994 ◽  
Vol 144 ◽  
pp. 635-639
Author(s):  
J. Baláž ◽  
A. V. Dmitriev ◽  
M. A. Kovalevskaya ◽  
K. Kudela ◽  
S. N. Kuznetsov ◽  
...  
Keyword(s):  
Solar Flare ◽  
Energy Range ◽  
Gamma Rays ◽  
Pulse Shape ◽  
Gamma Ray ◽  
Pulse Shape Discrimination ◽  
Shape Discrimination ◽  
Solar Neutron ◽  
Low Altitude

AbstractThe experiment SONG (SOlar Neutron and Gamma rays) for the low altitude satellite CORONAS-I is described. The instrument is capable to provide gamma-ray line and continuum detection in the energy range 0.1 – 100 MeV as well as detection of neutrons with energies above 30 MeV. As a by-product, the electrons in the range 11 – 108 MeV will be measured too. The pulse shape discrimination technique (PSD) is used.

Alpha-Effect, Current and Kinetic Helicities for Magnetically Driven Turbulence, and Solar Dynamo

2000 ◽  
Vol 179 ◽  
pp. 387-388
Author(s):  
Gaetano Belvedere ◽  
V. V. Pipin ◽  
G. Rüdiger
Keyword(s):  
Southern Hemisphere ◽  
Northern Hemisphere ◽  
Convection Zone ◽  
Solar Surface ◽  
Momentum Transport ◽  
Angular Momentum Transport ◽  
Magnetic Buoyancy ◽  
Alpha Effect ◽  
Current Helicity

Extended AbstractRecent numerical simulations lead to the result that turbulence is much more magnetically driven than believed. In particular the role ofmagnetic buoyancyappears quite important for the generation ofα-effect and angular momentum transport (Brandenburg & Schmitt 1998). We present results obtained for a turbulence field driven by a (given) Lorentz force in a non-stratified but rotating convection zone. The main result confirms the numerical findings of Brandenburg & Schmitt that in the northern hemisphere theα-effect and the kinetic helicityℋkin= 〈u′ · rotu′〉 are positive (and negative in the northern hemisphere), this being just opposite to what occurs for the current helicityℋcurr= 〈j′ ·B′〉, which is negative in the northern hemisphere (and positive in the southern hemisphere). There has been an increasing number of papers presenting observations of current helicity at the solar surface, all showing that it isnegativein the northern hemisphere and positive in the southern hemisphere (see Rüdigeret al. 2000, also for a review).

The Hemispheric Sign Rule of Current Helicity during the Rising Phase of Cycle 23

2000 ◽  
Vol 179 ◽  
pp. 303-306
Author(s):  
S. D. Bao ◽  
G. X. Ai ◽  
H. Q. Zhang
Keyword(s):  
Solar Cycle ◽  
Southern Hemisphere ◽  
Northern Hemisphere ◽  
Active Regions ◽  
Hemispheric Preference ◽  
Current Helicity

AbstractWe compute the signs of two different current helicity parameters (i.e., αbestandHc) for 87 active regions during the rise of cycle 23. The results indicate that 59% of the active regions in the northern hemisphere have negative αbestand 65% in the southern hemisphere have positive. This is consistent with that of the cycle 22. However, the helicity parameterHcshows a weaker opposite hemispheric preference in the new solar cycle. Possible reasons are discussed.

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