%0 Journal Article
%@holdercode {isadg {BR SPINPE} ibi 8JMKD3MGPCW/3DT298S}
%@nexthigherunit 8JMKD3MGPCW/3ETR8EH
%@archivingpolicy denypublisher denyfinaldraft24
%@issn 0273-1177
%@usergroup administrator
%@usergroup banon
%@usergroup simone
%3 longitudinal distribution.pdf
%X The Accelerometer Experiment (ACC) onboard Mars Global Surveyor (MGS) measured 1600 density profiles in the upper atmosphere of Mars during aerobraking. These measurements reveal large-scale and small-scale structure in the thermosphere of Mars. Here, the measurements of mass density for 115 orbits (#P0670P0789) from November 1 to 30, 1998, under spring equinox and medium solar activity conditions (average F10.7  137) during phase 2 of the aerobraking in the thermosphere of Mars at different altitudes and longitudes are presented for northern mid-latitude (1742°N) in the dayside atmosphere using ACC onboard MGS. From these mass densities, the neutral densities of different gases are derived from their mixing ratios. Using these neutral densities, the longitudinal distribution of photoionization rates and photoelectron impact ionization rates are calculated at wavelength range 1102.57 nm due to EUV and soft X-ray radiation under photochemical controlled region using Analytical Yield Spectrum approach (AYS). These conditions are appropriate for MGS Phase 2 aerobraking period from which the accelerometer data is used. Under the photochemical equilibrium condition, the electron density near the peak varies as the square root of the total peak ionization rate. Using this fact, an attempt is being made to estimate the mean primary and secondary peak electron density by averaging the longitudinal variations of total peak ionization rates in the northern mid-latitude (1742°N) ionosphere of Mars, as there is no radio science measurement at this latitude region by MGS.
%N 9
%T Longitudinal distribution of thermospheric densities and ionization rates in the upper atmosphere of Mars at mid-latitude using MGS ACC data
%@electronicmailaddress sseth2002@yahoo.com.in
%@secondarytype PRE PI
%K Mars, Ionosphere, Peak altitude, Ionization rate, Planetary waves, Tides.
%@visibility shown
%@group
%@group DAS-CEA-INPE-MCT-BR
%@secondarykey INPE--PRE/
%2 sid.inpe.br/mtc-m17@80/2007/06.29.14.00.54
%@affiliation Department of Physics, Bhavan’s R.A College of Science
%@affiliation Instituto Nacional de Pesquisas Espaciais (INPE)
%B Advances in Space Research
%P 1353-1360
%4 sid.inpe.br/mtc-m17@80/2007/06.29.14.00
%D 2008
%V 41
%@doi 10.1016/j.asr.2007.05.056
%A Seth, S. P.,
%A Jayanthi, Uadya Bhaskaram,
%@dissemination WEBSCI; PORTALCAPES; MGA; COMPENDEX.
%@area CEA