Plasma density estimates from spacecraft potential using MMS observations in the dayside magnetosphere
Abstract
Using our established methods (Torkar et al. 2015; Andriopoulou et al. 2015) to reconstruct spacecraft potential observations that are under active control to uncontrolled ones, we combine multispacecraft MMS observations in the dayside magnetosphere from a spacecraft with active spacecraft potential control (ASPOC on) and one with no active control (ASPOC off) in order to estimate the photoelectron emission as well as the plasma density from spacecraft potential variations. Such estimates are of particular importance especially during periods the FPI instruments are not in operation. We compare our results with the plasma density observations provided by plasma detectors onboard MMS, whenever available. We finally make a comparison of the results derived with the two different methods.
- Publication:
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AGU Fall Meeting Abstracts
- Pub Date:
- December 2016
- Bibcode:
- 2016AGUFMSM21A2453A
- Keywords:
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- 2723 Magnetic reconnection;
- MAGNETOSPHERIC PHYSICSDE: 2724 Magnetopause and boundary layers;
- MAGNETOSPHERIC PHYSICSDE: 2728 Magnetosheath;
- MAGNETOSPHERIC PHYSICSDE: 2784 Solar wind/magnetosphere interactions;
- MAGNETOSPHERIC PHYSICS