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Vikram Ambalal Sarabhai

Vikram Ambalal Sarabhai, Indian physicist (Ahmedabad, Gujarat State 12 August 1919 – Thiruvanathapuram, Kerala State 30 December 1971)
Authored 86 papers
Established a complete relationship between spectral changes in interplanetary space, magnetosphere and cosmic rays
Proposed a mechanism for explaining recurrent effects and large Forbush decreases of cosmic ray intensity
Interpreted that considerable part of the changes in horizontal component of the geomagnetic field is due to the changes in the current system at the magnetopause and in the magneto-tail
Discovered that variations in the strength of cosmic rays were related to variations in solar activity
Demonstrated the significance of the study of anisotropy, within the solar system, of cosmic rays from the galaxy 

Moon crater Sarabhai