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Narrow-band Electrostatic Noise generated by an electron velocity space holeNarrow-band Electrostatic Noise (NEN) is a common occurrence in the Earth's distant magnetotail. NEN is observed in a frequency range (100-316 Hz) that falls roughly between the electron and ion plasma frequencies. This mode may result from holes in the electron distribution function associated with slow shocks. An instability that is associated with this mode is studied using numerical simulations. The growth of the instability depends on the size and shape of the hole. The hole mode can also be driven unstable by either an anisotropy in the electron distribution function or an ion beam. In all these cases the instability saturates at a low level and only a fraction of the available free energy is released.
Document ID
19930062097
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Richard, Robert L.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Ashour-Abdalla, Maha
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Coroniti, Ferdinand V.
(California Univ. Los Angeles, United States)
Date Acquired
August 16, 2013
Publication Date
July 1, 1993
Publication Information
Publication: Journal of Geophysical Research
Volume: 98
Issue: A7
ISSN: 0148-0227
Subject Category
Geophysics
Accession Number
93A46094
Funding Number(s)
CONTRACT_GRANT: NAG5-1480
CONTRACT_GRANT: NSF ATM-88-14855
CONTRACT_GRANT: NSF ATM-90-17759
CONTRACT_GRANT: NAG5-1100
Distribution Limits
Public
Copyright
Other

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