Photon emission from very high energy nuclear collisions

1993 ◽  
Vol 48 (7) ◽  
pp. 3182-3189 ◽  
Author(s):  
Hendrickje Nadeau
Keyword(s):  
Photon Emission ◽  
High Energy ◽  
Nuclear Collisions ◽  
Very High Energy ◽  
Very High

scholarly journals Monitoring of the radio galaxy M 87 at Very High Energy with MAGIC during a low emission state between 2012 and 2015

2016 ◽  
Vol 12 (S324) ◽  
pp. 164-167
Author(s):  
C. Arcaro ◽  
P. Bangale ◽  
M. Manganaro ◽  
D. Mazin ◽  
P. Colin ◽  
...  
Keyword(s):  
Radio Galaxy ◽  
Spectral Energy Distribution ◽  
Photon Emission ◽  
High Energy ◽  
Spectral Energy ◽  
X Rays ◽  
Low Emission ◽  
Very High Energy ◽  
Alternative Scenarios ◽  
Very High

AbstractWe present the preliminary results from observing the nearby radio galaxy M 87 for 156 hours (between the years 2012 and 2015) with the MAGIC telescopes, which lead to a significant very high energy (VHE, E > 100 GeV) detection of the source in quiescent states each year. Our VHE analysis combined with quasi-simultaneous data at other energies (from gamma-rays, X-rays, optical and radio) provides a unique opportunity to study the source variability and its broadband spectral energy distribution, which is found to disfavour a one-zone synchrotron/synchrotron self-Compton model. Therefore, other alternative scenarios for the photon emission are explored. We also find that the VHE emission is compatible with being produced close to the source radio core as previous data already indicated. A detailed paper presenting full results of the observing campaign is in preparation.

MINIJETS AND THE MULTIPLICITY DEPENDENCE OF THE AVERAGE TRANSVERSE MOMENTUM IN HIGH ENERGY NUCLEAR COLLISIONS

1993 ◽  
Vol 02 (01) ◽  
pp. 207-217
Author(s):  
F.S. NAVARRA ◽  
D. TRELEANI
Keyword(s):  
Transverse Momentum ◽  
High Energy ◽  
Average Transverse Momentum ◽  
Hydrodynamical Models ◽  
Rapidity Region ◽  
Nuclear Collisions ◽  
Straight Line ◽  
Very High Energy ◽  
Very High

We make predictions for the correlation between 〈pT〉 and the multiplicity in the context of the minijet formalism applied to very high energy nuclear collisions. 〈pT〉 is shown to depend almost linearly on n and the slope of this approximate straight line increases for the noncentral rapidity region. Comparison with predictions made by hydrodynamical models is made.

scholarly journals Parton Cascades in High-Energy Nuclear Collisions

2003 ◽  
Vol 12 (02) ◽  
pp. 165-176
Author(s):  
Berndt Müller
Keyword(s):  
High Energy ◽  
Collision Dynamics ◽  
Renormalization Group Flow ◽  
Nuclear Collisions ◽  
Qcd Vacuum ◽  
Current State ◽  
Parton Cascade ◽  
Very High Energy ◽  
Group Flow ◽  
Very High

This is a review of the parton cascade model (PCM) which provides a QCD-based description of nucleus-nucleus reactions at very high energy. The PCM describes the collision dynamics within the early and dense phase of the reaction in terms of the relativistic, probabilistic transport of perturbative excitations (partons) of the QCD vacuum, combined with the renormalization group flow of the parton virtuality. The current state of numerical implementations of the model, as well as its predictions for nuclear collisions at RHIC and LHC are discussed.

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