Subauroral red arcs and associated ionospheric phenomena
Subauroral red arcs phenomenon hypotheses based on associated ionospheric plasma properties measurements
Chandra, S.↗
Engineering topics
Chandra, S.
Publications and source records attributed to Chandra, S..
Ionosphere heating by neutral gas winds
Investigation of the ion and electron temperature rises caused by friction between the neutral gas winds and the plasma of the ionosphere. The results obtained indicate that within an altitude range of 150-200 km, ion temperatures can exceed electron temperatures by as much as 130 K. Ion temperature increases range from 50 to 200 K, depending upon the atmosphere model used. It is pointed out that failure to make allowance for heating by friction in determinations of neutral gas temperature may lead to considerable errors.
Stubbe, P.↗
Composition of ions and neutral gases during a magnetic storm
Study of the variation in composition of ions and neutral gases on the basis of numerical solutions of a coupled differential equation system describing the fundamental properties of the ionosphere and atmosphere within the range of the thermosphere. It is shown that changes in ion composition observed during a magnetic storm can be represented by changes in neutral gas composition in the lower thermosphere. A reduction of the O/N2 ratio in the lower thermosphere starts a sequence of events that leads to an increase in neutral gas temperature, decrease in O(+) and increase in NO(+) concentration.
Chandra, S.↗
On explaining the F-region seasonal anomaly in terms of composition changes in the lower atmosphere
Seasonal anomaly of F-region explained in terms of composition changes in lower atmosphere
Chandra, S.↗
The effect of electric fields on the F-region behaviour as compared with neutral wind effects
F region diurnal behavior, comparing neutral winds and electric field effects
Chandra, S.↗
The sub auroral red arc and the associated ionospheric phenomena
Subauroral red arc and associated ionospheric phenomena
Chandra, S.↗
Ion and neutral composition changes in the thermospheric region during magnetic storms
Ion and neutral composition changes in thermospheric region during magnetic storms
Chandra, S.↗
OGO 4 observations of ion composition and temperatures in the topside ionosphere
Hydrogen, He and oxygen ion density, and ion and electron temperatures in upper ionosphere from OGO 4 observations
Bourdeau, R. E.↗
The diurnal phase anomaly in the upper atmospheric density and temperature
Upper atmospheric density and temperature diurnal phase and amplitude discrepancy reconciled by dynamic diffusion model
Chandra, S.↗
Meteroid hazards in deep space Final report
Detection and measurement of meteoroid hazards by optical system using reflected sunlight
Chandra, S.↗
OGO 4 observations of ion composition and temperatures in the topside ionosphere
OGO-D observations of ion composition and temperatures in topside ionosphere
Bourdeau, R. E.↗
The diurnal phase anomaly in the upper atmospheric density and temperature
Diurnal phase anomaly in upper atmospheric density and temperature
Chandra, S.↗
Diurnal phase anomaly in the earth's upper atmosphere
Dynamic diffusion concept for calculating diurnal thermospheric temperature characteristics
Chandra, S.↗
Direction effect in thermal contact conductance
Thermal conductance of contacts between dissimilar solids with interstitial fluids, calculating heat flow direction effect by double constriction model
Chandra, S.↗
The role of atomic oxygen in the ionospheric E- and F-region behavior.
Atomic oxygen density role in ionospheric E and F region magnetic stability, noting heat loss effect of atomic excitation
Chandra, S.↗
The influence of varying solar flux on ionospheric temperatures and densities - A theoretical study.
Simultaneous solution of continuity and heat conduction equations for ionospheric plasma consisting of electrons, atomic O ions and neutral gas species, discussing varying solar flux effects
Chandra, S.↗
F-region ionization and heating during magnetic storms.
Simultaneous solution of continuity and heat conduction equations for ionospheric electrons, ions and neutral species for studying F region magnetic storm behavior
Chandra, S.↗
The role of atomic oxygen in the ionospheric E and F region behavior
Cooling effects of excited atomic oxygen on electron temperature in ionospheric E and F region
Chandra, S.↗