Tracking a CME and SIR to Earth and Mars during the deep minimum of Solar Cycle 24
Palmerio, E., Lee, C. O., Richardson, I. G., Nitta, N. V., Mays, M. L., … Halekas, J. S. (2020). Tracking a CME and SIR to Earth and Mars during the deep minimum of Solar Cycle 24. In AGU Fall Meeting 2020. American Geophysical Union.
Interplanetary coronal mass ejections (ICMEs) and stream interactions regions (SIRs) are large-scale solar wind structures responsible for space weather disturbances at Earth and the other planets (e.g., Zhang et al. 2007). Their occurrence usually depends on the phase of the solar cycle, with IC... Show moreInterplanetary coronal mass ejections (ICMEs) and stream interactions regions (SIRs) are large-scale solar wind structures responsible for space weather disturbances at Earth and the other planets (e.g., Zhang et al. 2007). Their occurrence usually depends on the phase of the solar cycle, with ICMEs being more frequent during solar maximum and SIRs dominating during solar minimum. Thus, periods of solar minimum are usually regarded as particularly suitable for following solar transients through the heliosphere, since they are often characterized by single-lCME events that can more or less easily be tracked back to their solar source. In this study, we follow a coronal mass ejection (CME) and solar wind high-speed stream (HSS) that occurred in August 2018, i.e. during the minimum of Solar Cycle 24. In particular, we analyze their in-situ signatures at Earth and Mars, which were nearly radially aligned. The configuration of the inner heliosphere during the period under study is shown in Figure 1. Show less
