Orion-arm magnetic monopoles and gamma rays
Abstract
It is shown that galactic-disk monopoles could yield air showers which are stochastically aligned with the local Orion-arm magnetic field and which are above the energies of similarly aligned galactic heavy nuclei. In the absence of a cosmic-ray anisotropy, this method sets limits on the flux of galactic monopoles and their production cross sections. Limits based on the cosmic-ray anisotropy at 10 to the 19th power eV are presented. The possibility of stochastic alignment of inverse Compton photons from monopoles and 2.7 K black-body photons is considered. The resulting monopole-flux limits, based on the same data as those calculated by Osborne (1970), differ significantly from Osborne's limits, where the mechanisms of spiral-arm alignment and galactic containment are ignored.
- Publication:
-
Physical Review D
- Pub Date:
- November 1975
- DOI:
- 10.1103/PhysRevD.12.2610
- Bibcode:
- 1975PhRvD..12.2610T
- Keywords:
-
- Cosmic Ray Showers;
- Gamma Rays;
- Magnetic Poles;
- Monopoles;
- Spiral Galaxies;
- Anisotropic Media;
- Compton Effect;
- Magnetic Fields;
- Pair Production;
- Stochastic Processes;
- Space Radiation