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Title: Response of Ionospheric Electron Temperature to Solar Wind Dynamic Pressure from Pioneer Venus
Authors: Mahajan, K K
Paul, Rashmi
Kar, Jayanta
Issue Date: Apr-1988
Publisher: NISCAIR-CSIR, India
Abstract: The variation of dayside ionospheric electron temperature (Te) with solar wind dynamic pressure (SWDP) is examined by using measurements from the electron temperature probe and magnetometer experiments aboard the Pioneer Venus Orbiter. A number of dayside periapsis orbits with SWDP varying from 2 x 10-8 to about 1.7 x 10-7 dynes cm-2 are selected to study changes in Te. It is seen that there is a statistically linear relationship between the SWDP and Te which is seen to vary from 3000K to more than 10,000K at an altitude of 250km during the above mentioned SWDP range. The topside heat flux at the ionopause is seen to increase by more than one order of magnitude during conditions of very high SWDP. These results imply that electron temperature variability in the Venusian ionosphere is essentialy controlled by solar wind heating.
Page(s): 50-52
ISSN: 0975-105X (Online); 0367-8393 (Print)
Appears in Collections:IJRSP Vol.17(2) [April 1988]

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