Electron heat flux and whistler instability in the Earth's magnetosheath
Abstract
Despite heat flux's role in regulating energy conversion in collisionless plasmas, its properties and evolution in the magnetosheath downstream of the Earth's bow shock are scarcely explored. We use Magnetospheric Multiscale in situ measurements to quantify and characterize the electron heat flux in the magnetosheath. We find that the heat flux is shaped by the magnetosheath magnetic field as it drapes around the magnetosphere. While it is affected by solar wind upstream conditions and increases with magnetic field strength, it is not substantially changed by local magnetosheath processes. Also, the heat flux is limited by whistler instability thresholds.
Fields of Study & Subjects
Ionosphere and magnetosphere dynamics
Dust and Plasma Wave Phenomena
Earthquake Detection and Analysis
Publication details
- Journal / source
- Physical review. E
- Publisher
- American Physical Society (APS)
- Volume
- 113
- Issue
- 6
- Pages
- L063201–L063201
- Publication date
- 21 May 2026
- Language
- EN