Characteristic recovery times of Forbush-type decreases in the cosmic radiation. I - Observations at earth at different energies

Details Characteristic recovery times of Forbush-type decreases in the cosmic radiation. I - Observations at earth at different energies Characteristic recovery times of Forbush-type decreases in the cosmic radiation. I - Observations at earth at different energies

Mar 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986jgr....91.2851l&link_type=abstract

Journal of Geophysical Research (ISSN 0148-0227), vol. 91, March 1, 1986, p. 2851-2857.

Physics

31

Cosmic Rays, Forbush Decreases, Earth Environment, Imp, Modulation, Solar Cycles, Solar Magnetic Field, Two Dimensional Models

Scientific paper

Data on 30 asymmetric Forbush decreases recorded by the IMP spacecraft at 1 AU and the Mt. Washington neutron monitor over the period 1972-84 are examined to characterize the recovery characteristics of cosmic rays after the events. The spacecraft data are concentrated at energies of 1.7 GV, while the terrestrial instruments recorded events at 5 GV. Attention is paid to the relative amplitudes of the recorded transient decreases, the characteristic recovery times, and the energy dependence of the amplitudes and recovery time. The recovery times were found to be equal at both energy levels, supporting a concept of energy independence for the recoveries. Also, no correlations were found between the recovery times and the occurrences of a solar magnetic field reversal or with phase in the solar modulation cycle. A time-dependent, two-dimensional model is defined, which expresses the cosmic ray particle distributions as a function of the decay of the disturbance, with a small dependence on the transport parameters of the cosmic rays.

Affiliated with

Also associated with

No associations

Rating

Characteristic recovery times of Forbush-type decreases in the cosmic radiation. I - Observations at earth at different energies does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Characteristic recovery times of Forbush-type decreases in the cosmic radiation. I - Observations at earth at different energies, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Characteristic recovery times of Forbush-type decreases in the cosmic radiation. I - Observations at earth at different energies will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1282870