The 3d Reconstructed Global Solar Wind Boundary from Remote-Sensing IPS Data
Abstract
At UCSD, remote-sensing analyses of the inner heliosphere have been regularly carried out using interplanetary scintillation (IPS) data for almost two decades. These analyses have measured and reconstructed 3D solar wind structure throughout this time period. These global results, especially using Solar-Terrestrial Environment Laboratory (STELab) IPS observations, provide a time-dependent inner boundary in density and velocity that is nearly complete over the whole heliosphere for the major part of each year and with a time cadence of about one day. When using the volumetric velocity provided by UCSD time-dependent tomography, we can accurately convect-outward solar surface magnetic fields and thus provide values of the magnetic field throughout the global volume. These resulting time-dependent 3D reconstructed results of density, velocity, and vector magnetic field, which are available from 15 solar radii out to 3.0 AU, have been compared successfully with in-situ measurements obtained near Earth, STEREO, Mars, Venus, MESSENGER, and at the Ulysses spacecraft. Here we present sample determinations of these global solar wind boundary for 3D-MHD models from recent IPS data.
- Publication:
-
Solar Heliospheric and INterplanetary Environment (SHINE 2012)
- Pub Date:
- June 2012
- Bibcode:
- 2012shin.confE..32Y