Radioactivity and electron acceleration in supernova remnants

Journal Article · Sat Oct 15 00:00:00 EDT 2011 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PHYSREVD.84.083010· OSTI ID:21607858

Zirakashvili, V N ^[1]; Aharonian, F A ^[2]

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1. Pushkov Institute of Terrestrial Magnetism, Ionosphere and Radiowave Propagation, 142190 Troitsk, Moscow Region (Russian Federation)
2. Dublin Institute for Advanced Studies, 31 Fitzwilliam Place, Dublin 2 (Ireland)

We argue that the decays of radioactive nuclei related to {sup 44}Ti and {sup 56}Ni ejected during supernova explosions can provide a vast pool of mildly relativistic positrons and electrons which are further accelerated to ultrarelativistic energies by reverse and forward shocks. This interesting link between two independent processes - the radioactivity and the particle acceleration - can be a clue for solution of the well known theoretical problem of electron injection in supernova remnants. In the case of the brightest radio source Cas A, we demonstrate that the radioactivity can supply adequate number of energetic electrons and positrons for interpretation of observational data provided that they are stochastically preaccelerated in the upstream regions of the forward and reverse shocks.

• OSTI ID: 21607858
• Journal Information: Physical Review. D, Particles Fields, Vol. 84, Issue 8; Other Information: DOI: 10.1103/PhysRevD.84.083010; (c) 2011 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ACCELERATION
COSMIC ELECTRONS
COSMIC POSITRONS
ELECTRON BEAM INJECTION
EXPLOSIONS
MATHEMATICAL SOLUTIONS
NICKEL 56
PARTICLE DECAY
RADIOACTIVITY
RELATIVISTIC RANGE
SUPERNOVA REMNANTS
TAIL ELECTRONS
TITANIUM 44
ANTILEPTONS
ANTIMATTER
ANTIPARTICLES
BEAM INJECTION
BETA DECAY RADIOISOTOPES
BETA-PLUS DECAY RADIOISOTOPES
COSMIC RADIATION
COSMIC RADIO SOURCES
DAYS LIVING RADIOISOTOPES
DECAY
ELECTRON CAPTURE RADIOISOTOPES
ELECTRONS
ELEMENTARY PARTICLES
ENERGY RANGE
EVEN-EVEN NUCLEI
FERMIONS
INTERMEDIATE MASS NUCLEI
IONIZING RADIATIONS
ISOTOPES
LEPTONS
MATTER
NICKEL ISOTOPES
NUCLEI
POSITRONS
RADIATIONS
RADIOISOTOPES
SECONDARY COSMIC RADIATION
TITANIUM ISOTOPES
YEARS LIVING RADIOISOTOPES