 |
| Titel |
Observations of interplanetary shocks with multiple spacecraft |
| VerfasserIn |
Primoz Kajdic, Xochitl Blanco-Cano, Benoit Lavraud |
| Konferenz |
EGU General Assembly 2015
|
| Medientyp |
Artikel
|
| Sprache |
Englisch
|
| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 17 (2015) |
| Datensatznummer |
250108034
|
| Publikation (Nr.) |
 EGU/EGU2015-7764.pdf |
|
|
|
|
|
| Zusammenfassung |
| Interplanetary (IP) shocks in the heliosphere are often driven by Coronal Mass Ejections and
Stream Interaction Regions. They are one of the main accelerators of suprathermal and
energetic particles in the interplanetary space. The acceleration mechanisms of these
collisionless shocks depend on their Mach numbers and also on the angle between the
upstream interplanetary magnetic field and the local normal to the shock. It has been
recognized in the past that the latter varies along the shock surface. Observations with
multiple spacecraft have shown that the local shock normal is oriented differently at different
points in space. However this has been done for spacecraft separations of at least several
Earth radii. Here we present observations of IP shocks with multiple spacecraft and missions
for much smaller inter-spacecraft separations. In the case of observations with Cluster
mission, these separations can be as small as 40 km. Even on these scales we find
that the observed shock profiles may be slightly different. We have elaborated a
catalog of ~80 shocks observed with two or more spacecraft in orbit around Earth.
Here we present this catalog as well as some of the most interesting case events. |
|
|
|
|
|