Anomalous Cosmic Rays and Solar Modulation

Details Anomalous Cosmic Rays and Solar Modulation Anomalous Cosmic Rays and Solar Modulation

Jan 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998ssrv...83...51c&link_type=abstract

Space Science Reviews, v. 83, Issue 1/2, p. 51-62 (1998).

Physics

20

Anomalous Cosmic Rays, Pioneer 10, Sampex, Voyager, Solar Modulation, Heliosphere, Solar Wind Termination Shock, Diffusion Coefficient, Gradients

Scientific paper

We review aspects of anomalous cosmic rays (ACRs) that bear on the solar modulation of energetic particles in the heliosphere. We show that the latitudinal and radial gradients of these particles exhibit a 22-year periodicity in concert with the reversal of the Sun's magnetic field. The power-law index of the low energy portion of the energy spectrum of ACRs at the shock in 1996 appears to be <= -1.3, suggesting that the strength of the solar wind termination shock at the helioequatorial plane is relatively weak, with s <= 2.8. The rigidity dependence of the perpendicular interplanetary mean free path in the outer heliosphere for particles with rigidities between ~ 0.2 and 0.7 GV varies approximately as R2, where R is particle rigidity. There is evidence that ACR oxygen is primarily multiply charged above ~ 20 MeV/nuc and primarily singly-charged below ~ 16 MeV/nuc. The location of the termination shock was at ~ 65 AU in 1987 and ~ 85 AU in 1994.

Affiliated with

Also associated with

No associations

Rating

Anomalous Cosmic Rays and Solar Modulation 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 Anomalous Cosmic Rays and Solar Modulation, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Anomalous Cosmic Rays and Solar Modulation will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1615347