Upper Ionosphere of Mars During Solar Quiet and Disturbed Conditions - Planetary Exploration and Science: Recent Results and Advances - page 122

Fig. 7.5 Sudden increase of electron density maximum ( top panel ) simultaneous to an increase in
solar X-ray flux ( bottom panel ) of wavelength 0.5-4 Å ( lower curve ) and 1-8 Å ( top curve ). The
X-ray data were observed on 15 September 2005 by GOES spacecraft when MARSIS observed
the sudden increase in electron density (Reprinted from Nielsen et al. ( 2006 ) with kind permission
from Springer)
the electron density profiles measured by MGS and reported effects of seven X-ray
flares in the Martian ionosphere. They found elevated electron densities in the E
region during all the flares but in the F region during some flares only.
Recently, Haider et al. ( 2012 ) have modelled solar X-ray fluxes measured by
GOES 12 during the periods 29 May to 3 June 2003, 15-20 January 2005 and
12-18 May 2005 and investigated effects on electron densities produced by
individual X-ray flares that occurred within these intervals. They have reproduced