Evidence for interplanetary acceleration of nucleons in corotating interaction regions

Journal Article · Wed Dec 01 00:00:00 EST 1976 · Astrophys. J., Lett.; (United States)

DOI:https://doi.org/10.1086/182311· OSTI ID:7240247

Barnes, C W; Simpson, J A

Simultaneous measurements of protons and helium in the energy range 0.5--2 MeV per nucleon on IMP-8 (at 1 AU) and Pioneer-10 and Pioneer-11 (between 1 and 8 AU) have revealed a correlation which develops beyond approx.2.5 AU between the positions of double peaks in recurring proton intensity increases and the leading and trailing edges of recurring regions of fast solar wind streams and enhanced magnetic field. From these correlations and the study of energy spectra and the proton-to-helium abundance ratios, it is concluded that there is local acceleration of nucleons, probably near the boundary regions where shocks are observed: even of the nucleons are injected initially at the Sun. (AIP)

• Research Organization: Enrico Fermi Institute, University of Chicago
• OSTI ID: 7240247
• Journal Information: Astrophys. J., Lett.; (United States), Vol. 210:2
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
COSMIC PROTONS
ACCELERATION
COSMIC RADIATION
ENERGY SPECTRA
HELIUM
INTERPLANETARY MAGNETIC FIELDS
INTERPLANETARY SPACE
PLASMA
SHOCK WAVES
SOLAR WIND
BARYONS
CRYOGENIC FLUIDS
ELEMENTARY PARTICLES
ELEMENTS
FERMIONS
FLUIDS
HADRONS
IONIZING RADIATIONS
MAGNETIC FIELDS
NONMETALS
NUCLEONS
PROTONS
RADIATIONS
RARE GASES
SOLAR ACTIVITY
SPACE
SPECTRA
640101* - Astrophysics & Cosmology- Cosmic Radiation