The Brightness of Density Structures at Large Solar Elongation Angles: What Is Being Observed by<i>STEREO</i>SECCHI?
The Brightness of Density Structures at Large Solar Elongation Angles: What Is Being Observed by<i>STEREO</i>SECCHI?
We discuss features of coronal mass ejections (CMEs) that are specific to heliospheric observations at large elongation angles.Our analysis is focused on a series of two eruptions that occurred on 2007 January 24-25, which were tracked by the Heliospheric Imagers (HIs) onboard STEREO.Using a three-dimensional (3-D) magneto-hydrodynamic simulation of these …