Interaction of Space Weather Phenomena With Mars Plasma Environment During Solar Minimum 23/24

Abstract

We study the interaction of three solar wind structures, two stream interaction regions and one interplanetary coronal mass ejection, with Mars' plasma environment during 20-27 November 2007. This period corresponds to the solar minimum between the solar cycles 23 and 24 which was characterized by very low values of the solar wind density and dynamic pressure and low IMF magnitude. During that time the Mars-Express orbit was in the terminator plane, while the Earth, Sun, and Mars were almost aligned, so we use the ACE and STEREO probes as solar wind monitors in order to identify and characterize the structures that later hit Mars. We find that the passage of these structures caused strong variations of in the bow shock location (between 2.2 and 3.0~R${}_M$), compression of the magnetospheric cavity (up to 45~\%) and an increased transterminator flow below 2~R${}_M$ (by a factor of $\le$8). This study shows that during times of low solar activity, modest space weather phenomena may cause large variations of plasma flow at Mars.

arXiv commentPublished in Journal of Geophysical Research

References in corpus (5)

• An Observational Overview of Solar Flares
• Strong coronal channelling and interplanetary evolution of a solar storm up to Earth and Mars
• Modeling the evolution and propagation of the 2017 September 9th and 10th CMEs and SEPs arriving at Mars constrained by remote-sensing and in-situ measurement
• Measurements of Forbush decreases at Mars: both by MSL on ground and by MAVEN in orbit
• Response of the Martian Ionosphere to Solar Activity including SEPs and ICMEs in a two week period starting on 25 February 2015

Cited by in corpus (2)

• CME Evolution in the Structured Heliosphere and Effects at Earth and Mars During Solar Minimum
• The Mouse that Squeaked: A small flare from Proxima Cen observed in the millimeter, optical, and soft X-ray with Chandra and ALMA