Cosmic-ray induced gamma-ray emission from the starburst galaxy NGC 253

2014 ◽  
Author(s):  
Xilu Wang ◽  
Brian D. Fields
Keyword(s):  
Gamma Ray ◽  
Cosmic Ray ◽  
Starburst Galaxy ◽  
Gamma Ray Emission

scholarly journals EDGE: a code to calculate diffusion of cosmic-ray electrons and their gamma-ray emission

2017 ◽  
Author(s):  
Ruben Lopez-Coto ◽  
Joachim Hahn ◽  
Jim Hinton ◽  
Robert D. Parsons ◽  
Francisco Salesa Greus ◽  
...  
Keyword(s):  
Gamma Ray ◽  
Cosmic Ray ◽  
Gamma Ray Emission

scholarly journals Detection of diffuse TeV gamma-ray emission from the neaby starburst galaxy NGC 253

2002 ◽  
Vol 396 (1) ◽  
pp. L1-L4 ◽  
Author(s):  
C. Itoh ◽  
R. Enomoto ◽  
S. Yanagita ◽  
T. Yoshida ◽  
A. Asahara ◽  
...  
Keyword(s):  
Gamma Ray ◽  
Starburst Galaxy ◽  
Gamma Ray Emission

scholarly journals SEARCH FOR COSMIC-RAY-INDUCED GAMMA-RAY EMISSION IN GALAXY CLUSTERS

2014 ◽  
Vol 787 (1) ◽  
pp. 18 ◽  
Author(s):  
M. Ackermann ◽  
M. Ajello ◽  
A. Albert ◽  
A. Allafort ◽  
W. B. Atwood ◽  
...  
Keyword(s):  
Galaxy Clusters ◽  
Gamma Ray ◽  
Cosmic Ray ◽  
Gamma Ray Emission

scholarly journals Cosmic ray production and emission in M82

2011 ◽  
Vol 7 (S284) ◽  
pp. 397-399
Author(s):  
Tova Yoast-Hull ◽  
John Everett ◽  
J. S. Gallagher ◽  
Ellen Zweibel
Keyword(s):  
Interstellar Medium ◽  
First Principles ◽  
Energetic Particle ◽  
Gamma Ray ◽  
Cosmic Ray ◽  
Injection Rate ◽  
Starburst Galaxy ◽  
Nearby Galaxy ◽  
Electron Positron ◽  
Particle Spectra

AbstractStarting from first principles, we construct a simple model for the evolution of energetic particles produced by supernovae in the starburst galaxy M82. The supernova rate, geometry, and properties of the interstellar medium are all well observed in this nearby galaxy. Assuming a uniform interstellar medium and constant cosmic-ray injection rate, we estimate the cosmic-ray proton and primary & secondary electron/positron populations. From these particle spectra, we predict the gamma ray flux and the radio synchrotron spectrum. The model is then compared to the observed radio and gamma-ray spectra of M82 as well as previous models by Torres (2004), Persic et al. (2008), and de Cea del Pozo et al. (2009). Through this project, we aim to build a better understanding of the calorimeter model, in which energetic particle fluxes reflect supernova rates, and a better understanding of the radio-FIR correlation in galaxies.

scholarly journals Supernova remnants and the origin of cosmic rays

2013 ◽  
Vol 9 (S296) ◽  
pp. 305-314
Author(s):  
Jacco Vink
Keyword(s):  
Synchrotron Radiation ◽  
Cosmic Rays ◽  
Magnetic Fields ◽  
Supernova Remnants ◽  
Supernova Remnant ◽  
Gamma Ray ◽  
Cosmic Ray ◽  
Galactic Cosmic Rays ◽  
Long Time ◽  
Gamma Ray Emission

AbstractSupernova remnants have long been considered to be the dominant sources of Galactic cosmic rays. For a long time the prime evidence consisted of radio synchrotron radiation from supernova remnants, indicating the presence of electrons with energies of several GeV. However, in order to explain the cosmic ray energy density and spectrum in the Galaxy supernova remnant should use 10% of the explosion energy to accelerate particles, and about 99% of the accelerated particles should be protons and other atomic nuclei.Over the last decade a lot of progress has been made in providing evidence that supernova remnant can accelerate protons to very high energies. The evidence consists of, among others, X-ray synchrotron radiation from narrow regions close to supernova remnant shock fronts, indicating the presence of 10-100 TeV electrons, and providing evidence for amplified magnetic fields, gamma-ray emission from both young and mature supernova remnants. The high magnetic fields indicate that the condition for accelerating protons to >1015 eV are there, whereas the gamma-ray emission from some mature remnants indicate that protons have been accelerated.

scholarly journals MODELING THE GAMMA-RAY EMISSION IN THE GALACTIC CENTER WITH A FADING COSMIC-RAY ACCELERATOR

2016 ◽  
Vol 833 (2) ◽  
pp. 200 ◽  
Author(s):  
Ruo-Yu Liu ◽  
Xiang-Yu Wang ◽  
Anton Prosekin ◽  
Xiao-Chuan Chang
Keyword(s):  
Gamma Ray ◽  
Galactic Center ◽  
Cosmic Ray ◽  
Gamma Ray Emission

scholarly journals Ultrahigh-energy diffuse gamma-ray emission from cosmic-ray interactions with the medium surrounding acceleration sources

2022 ◽  
Vol 105 (2) ◽  
Author(s):  
Pei-pei Zhang ◽  
Bing-qiang Qiao ◽  
Qiang Yuan ◽  
Shu-wang Cui ◽  
Yi-qing Guo
Keyword(s):  
Gamma Ray ◽  
Cosmic Ray ◽  
Ultrahigh Energy ◽  
Cosmic Ray Interactions ◽  
Gamma Ray Emission
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