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Title: Acceleration of energetic protons by interplanetary shocks

Abstract

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.

Authors:
; ; ;
Publication Date:
Research Org.:
Department of Physics and Astronomy, University of Iowa, Iowa City, Iowa 52242
OSTI Identifier:
5614360
Resource Type:
Journal Article
Journal Name:
J. Geophys. Res.; (United States)
Additional Journal Information:
Journal Volume: 84:A12
Country of Publication:
United States
Language:
English
Subject:
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 & Cosmology- Planetary Phenomena; 640104 - Astrophysics & Cosmology- Solar Phenomena

Citation Formats

Pesses, M E, Tsurutani, B T, Allen, J A.V., and Smith, E J. Acceleration of energetic protons by interplanetary shocks. United States: N. p., 1979. Web. doi:10.1029/JA084iA12p07297.
Pesses, M E, Tsurutani, B T, Allen, J A.V., & Smith, E J. Acceleration of energetic protons by interplanetary shocks. United States. https://doi.org/10.1029/JA084iA12p07297
Pesses, M E, Tsurutani, B T, Allen, J A.V., and Smith, E J. 1979. "Acceleration of energetic protons by interplanetary shocks". United States. https://doi.org/10.1029/JA084iA12p07297.
@article{osti_5614360,
title = {Acceleration of energetic protons by interplanetary shocks},
author = {Pesses, M E and Tsurutani, B T and Allen, J A.V. and Smith, E J},
abstractNote = {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.},
doi = {10.1029/JA084iA12p07297},
url = {https://www.osti.gov/biblio/5614360}, journal = {J. Geophys. Res.; (United States)},
number = ,
volume = 84:A12,
place = {United States},
year = {Sat Dec 01 00:00:00 EST 1979},
month = {Sat Dec 01 00:00:00 EST 1979}
}