Where do ultrahigh-energy particles come from?

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G Prasad

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Remanent supernovae and super-massive black-hole horizons are sources of ultrahigh energy particles
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The clear reason(s) behind the production of Ultra-High energy particles is(are) not known completely. The research in this field has pointed out many suggestions on how these particles could have achieved such high energies . Some of them are : 1. Hypernovae 2. Neutron stars 3. Gamma-ray...
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The clear reason(s) behind the production of Ultra-High energy particles is(are) not known completely. The research in this field has pointed out many suggestions on how these particles could have achieved such high energies . Some of them are : 1. Hypernovae 2. Neutron stars 3. Gamma-ray bursts 4. Active Galactic Nuclei 5. Relativistic Supernovae 6. Radio lobes of powerful radio galaxies 7. Intergalactic shocks created during the epoch of galaxy formation 8. Decay products of super-massive particles from topological defects, left over from phase transitions in the early universe 9. The decay of super-heavy dark matter by means of the Penrose process read less
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Ultra high-energy cosmic rays come from black holes.
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Ultra high-energy cosmic rays come from black holes
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Active Galactic Nuclei are the most likely candidates for the source of the highest-energy cosmic rays observed on the Earth. The origin of these ultra high energy (UHE) cosmic rays has been a long standing mystery in Astrophysics. Active Galactic Nuclei (AGN) consist of black holes with a huge mass,...
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Active Galactic Nuclei are the most likely candidates for the source of the highest-energy cosmic rays observed on the Earth. The origin of these ultra high energy (UHE) cosmic rays has been a long standing mystery in Astrophysics. Active Galactic Nuclei (AGN) consist of black holes with a huge mass, between a billion to ten trillion times that of our Sun, which keeps growing by gravitationally attracting gaseous matter. During the in-fall of matter into the black hole, electromagnetic radiation is emitted, such as radio, infrared, optical, ultraviolet, X-rays, or gamma rays, in large amounts. AGNs are the most luminous objects in the Universe. They also have been investigated as sources of very high-energy cosmic rays, though the exact mechanism of how they could accelerate particles to energies 100 million times higher than the most powerful particle accelerator on Earth is still not well understood. read less
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