Acceleration of energetic protons by interplanetary shocks

Journal Article · Sat Dec 01 00:00:00 EST 1979 · J. Geophys. Res.; (United States)

DOI:https://doi.org/10.1029/JA084iA12p07297· OSTI ID:5614360

Pesses, M E; Tsurutani, B T; Allen, J A.V.; Smith, E J

The University of Iowa instrument aboard Pioneer 11 detected 69 energetic proton events (EPE) (0.6< or =E/sub p/< or =3.4 MeV) during 1973--1974 in the heliocentric radial range 1--5 AU. Sixty percent of the EPE peak within +- 5 hours of a corotating interaction region (CIR) boundary, while 19% peak inside and 21% peak outside the interaction regions. Of the CIR boundaries at which an EPE peaks within +- 5 hours, 80% have associated shocks. The observed intensities and pitch angle distributions of protons near shock fronts are consistent with a theoretical similation of the acceleration of protons by a del vertical-bar B vertical-bar drift in a V x B electric field at the shock front.

• Research Organization: Department of Physics and Astronomy, University of Iowa, Iowa City, Iowa 52242
• OSTI ID: 5614360
• Journal Information: J. Geophys. Res.; (United States), Vol. 84:A12
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
SOLAR PROTONS
ACCELERATION
ELECTRIC FIELDS
INTERPLANETARY MAGNETIC FIELDS
INTERPLANETARY SPACE
MEV RANGE 01-10
PIONEER SPACE PROBES
PLASMA ACCELERATION
PLASMA DRIFT
SHOCK WAVES
BARYONS
ELEMENTARY PARTICLES
ENERGY RANGE
FERMIONS
HADRONS
MAGNETIC FIELDS
MEV RANGE
NUCLEONS
PROTONS
RADIATIONS
SOLAR PARTICLES
SOLAR RADIATION
SPACE
SPACE VEHICLES
STELLAR RADIATION
640107* - Astrophysics &amp; Cosmology- Planetary Phenomena
640104 - Astrophysics &amp; Cosmology- Solar Phenomena