What question did this study set out to answer?

To calculate the energy thresholds of primary cosmic protons permitted or forbidden by Earth's geomagnetic field across various latitudes and angles of incidence.

December 15, 1948Physical Review

On the Energy of Cosmic Radiation Allowed by the Earth's Magnetic Field

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Authors

MVM. S. VallartaTata Institute of Fundamental Research

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Implication

Theoretical analysis uncovers cutoff energy thresholds for cosmic protons in Earth's magnetic field, indicating directional geomagnetic deflection limits.

Key Points

To calculate the energy thresholds of primary cosmic protons permitted or forbidden by Earth's geomagnetic field across various latitudes and angles of incidence.
Calculated lower energy limits below which cosmic protons cannot penetrate the geomagnetic field across all latitudes.
Determined upper energy limits above which all protons enter freely for geomagnetic latitudes between 0° and 40°.
Computed energy cutoffs for vertical paths and 45° zenith angles across north, south, east, and west azimuths, alongside longitude-effect corrections.
Established boundary curves defining the total exclusion and full transmission of proton energies across global geomagnetic latitudes.
Demonstrated directional asymmetry in permitted proton energies, showing substantial cutoff variations across cardinal azimuths at a 45° zenith angle.

Cite This Study

M. S. Vallarta (1948) studied this question.

synapsesocial.com/papers/6a83f91bb0b8dfdc4c62e67e https://doi.org/10.1103/physrev.74.1837

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Implication

Theoretical analysis uncovers cutoff energy thresholds for cosmic protons in Earth's magnetic field, indicating directional geomagnetic deflection limits.

On the Energy of Cosmic Radiation Allowed by the Earth's Magnetic Field

Discussion

Member takes

Implication

Key Points

Cite This Study

On the Energy of Cosmic Radiation Allowed by the Earth's Magnetic Field

Discussion

Member takes

Implication

Key Points

Cite This Study

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