Astronomy and Astrophysics – Astronomy
Scientific paper
Mar 2002
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002apj...568..216c&link_type=abstract
The Astrophysical Journal, Volume 568, Issue 1, pp. 216-219.
Astronomy and Astrophysics
Astronomy
7
Ism: Cosmic Rays, Sun: Solar Wind
Scientific paper
On 2000 August 25 from Lynn Lake, Manitoba, we conducted a balloon flight of the LEE/AESOP (Low Energy Electrons/Anti-Electron Sub Orbital Payload) payload to measure the spectrum of cosmic-ray electrons (resolved into negatrons and positrons) from 500 MeV to 3 GeV. Analysis of the data from that flight reveals a significant decrease in the cosmic-ray positron abundance from a level that remained relatively stable throughout the decade of the 1990s. Errors on the new determination are comparatively large due to the low particle fluxes at solar maximum. Nevertheless, the magnitude of the effect is consistent with predictions based on the assumption that cosmic-ray modulation effects with 22 yr periodicity are related simply and directly to charge sign and large-scale structure of the magnetic field embedded in the solar wind.
Clem John Mason
Evenson Paul A.
No associations
LandOfFree
Positron Abundance in Galactic Cosmic Rays 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 Positron Abundance in Galactic Cosmic Rays, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Positron Abundance in Galactic Cosmic Rays will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1408262