INVESTIGADORES
ROMERO Gustavo Esteban
artículos
Título:
Supernova-remnant origin of cosmic rays?
Autor/es:
YOUSAF M. BUTT; DIEGO F. TORRES; GUSTAVO E. ROMERO; THOMAS M. DAME; JORGE A. COMBI
Revista:
NATURE
Editorial:
Nature Publishing Group
Referencias:
Lugar: Londres; Año: 2002 vol. 418 p. 499 - 500
ISSN:
0028-0836
Resumen:
It is thought that Galactic cosmic ray nuclei are gradually accelerated to high energies (up to ~300 TeV/nucleon, where 1TeV=1012eV) in the expanding shock- waves connected with the remnants of powerful supernova explosions. However, this conjecture has eluded direct observational confirmation1,2 since it was first proposed in 1953 (ref. 3). Enomoto et al.4 claim to have finally found definitive evidence that corroborates this model, proposing that the very-high-energy, TeV-range, gamma-rays from the supernova remnant (SNR) RX J1713.7-3946 are due to the interactions of energetic nuclei in this region. Here we argue that their claim is not supported by the existing multiwavelength spectrum of this source. The search for the origin(s) of Galactic cosmic ray nuclei may be closing in on the long-suspected supernova-remnant sources, but it is not yet over.
