Science News Online (8/15/98): References for Birth zone shrinks for top cosmic rays

References & Sources - August 15, 1998

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Birth zone shrinks for top cosmic rays

The most potent cosmic rays hit the Earth with so much energy that it is unlikely they have come from far away in the universe.

References:

Takeda, M., et al. 1998. Extension of the cosmic-ray energy spectrum beyond the predicted Greisen-Zatsepin-Kuz’min Cutoff. Physical Review Letters 81(Aug. 10):1163.

Further Readings:

Cowen, R. 1995. Cosmic rays: ASCA finds super origin. Science News 148(Nov. 18):326.

Peterson, I. 1993. Turning a fly’s eye on energetic cosmic rays. Science News 144(Dec. 4):372.

Sources:

James W. Cronin
University of Chicago
Enrico Fermi Institute
5640 South Ellis Avenue
Chicago, IL 60637

Masahiro Takeda
University of Tokyo
Institute for Cosmic Ray Research
Tokyo 188-8502
Japan

Alexander Vilenkin
Tufts University
Department of Physics and Astronomy
Medford, MA 02155

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