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How are Forbush decreases related with IP magnetic field enhancements ? View all abstracts by submitter

Arun Babu   Submitted: 2014-06-20 02:15

Cosmic ray Forbush decreases (FDs) are usually thought to be due to Earth-directed coronal mass ejections (CMEs) from the Sun and their associated shocks. When CMEs and their shocks reach the Earth, they cause magnetic field compressions. We seek to understand the relation between these magnetic field compressions and FDs at rigidities between 12 and 42 GV using data from the GRAPES-3 instrument at Ooty. We find that the shapes of the Forbush decrease profiles show a startling similarity to that of the magnetic field compression in the near-Earth IP medium. We seek to understand the implications of this interesting result.

Authors: Arunbabu K. P., P. Subramanian, Sunil Gupta, H. M. Antia
Projects: None

Publication Status: conference proceeding of ISSTP 2012
Last Modified: 2014-06-20 06:31
Go to main E-Print page  PRE-FLARE DYNAMICS OF SUNSPOT GROUPS  Bridging EUV and white-light observations to inspect the initiation phase of a   Edit Entry  Download Preprint  Delete Entry 

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