NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Back to Results
Excitations of low-frequency hydromagnetic waves by freshly created ions in the solar windLow-frequency hydromagnetic waves excited by newborn ions in the solar wind plasma are studied. The freshly created ions appear in the solar wind frame with a ring beam distribution. Both Alfven and fast magnetosonic waves are made unstable by the presence of the newborn ions. The dependence of the growth rate of both waves on the newborn ion density, the angle between the interplanetary magnetic field (IMF) and solar wind flow, and the angle of wave propagation relative to the IMF is investigated. Analytic approximations for the growth rates are presented, and numerical solutions of the dispersion equation are shown. The approximations are quite close to the numerically determined growth rates. It is found that the waves grow preferentially in the direction parallel to the IMF, and that the growth rates increase with both newborn ion density and the angle between the IMF and the solar wind flow.
Document ID
19880038653
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Price, C. P.
(Maryland Univ. College Park, MD, United States)
Gaffey, J. D.
(Maryland Univ. College Park, MD, United States)
Dong, J. Q.
(Maryland, University College Park, United States)
Date Acquired
August 13, 2013
Publication Date
February 1, 1988
Publication Information
Publication: Journal of Geophysical Research
Volume: 93
ISSN: 0148-0227
Subject Category
Astrophysics
Accession Number
88A25880
Funding Number(s)
CONTRACT_GRANT: NGL-21-002-005
CONTRACT_GRANT: NAGW-971
Distribution Limits
Public
Copyright
Other

Available Downloads

There are no available downloads for this record.
No Preview Available