Summary
Calculations of cut-off rigidities for cosmic ray particles in the earth’s magnetic field have been carried out, using an approximation to the earth’s field which includes all moments up to and including the octupole moments. The results show that deviations of the cosmic ray intensity from that calculated on the dipole approximation may be ascribed to the higher moments of the earth’s field.
Riassunto
Si sono eseguiti calcoli delle rigidità di taglio per particelle di raggi cosmici nel campo magnetico terrestre usando per il campo terrestre un’approssimazione comprendente tutti i momenti fino a quelli di ottupolo. I risultati dimostrano che le deviazioni dell’intensità da quella calcolata con l’approssimazione di dipolo possono attribuirsi ai momenti superiori del campo terrestre.
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References
L. Katz, P. Meyer andJ. A. Simpson:Suppl. Nuovo Cimento,8, 277 (1958).
P. Rothwell andJ. Quenby:Suppl. Nuovo Cimento,8, 249 (1958).
J. Quenby andW. Webber:Phil. Mag.,4, 90 (1959).
Finch andLeaton:Month. Not. Roy. Astron. Soc., Geophys. Suppl.,7, 314 (1954). We used their solution 2.
G. Lemaitre andM. S. Vallarta:Phys. Rev.,50, 493 (1936).
R. A. Hutner:Phys. Rev.,55, 15 (1939);M. Schwartz:Suppl. Nuovo Cimento,11, 27 (1959).
N. A. Pomerantz, A. E. Sandström andD. C. Rose:Suppl. Nuovo Cimento,8, 257 (1958).
M. Schwartz:Bull. Amer. Phys. Soc.,3, 221 (1958). The check at 0° longitude was done after the publication of the abstract.
P. Rothwell:Phil. Mag.,3, 961 (1958).
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This work was supported by the U.S. National Committee for the IGY and the University of Minnesota Graduate School.
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Kellogg, P.J., Schwartz, M. Theoretical study of the cosmic ray equator. Nuovo Cim 13, 761–768 (1959). https://doi.org/10.1007/BF02726363
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DOI: https://doi.org/10.1007/BF02726363