Contribution of patchy reconnection to the ion to electron
temperature ratio in the Earth's magnetotail

Chen, Chuxin; Wang, Chih‐Ping

doi:10.5194/angeo-2018-47

Cited by 1 publication

(1 citation statement)

References 13 publications

(13 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The calculated T i / T e ratio in the equatorial plane earthward of 60

R_{e}

is comparable to that reported by Chen CX and Wang CP (2019). In particular, the closer the position is to the Earth, the lower was the ratio.…”

Section: Transport Of Charged Particles Within the Plasma Sheetsupporting

confidence: 89%

Preservation and variation of ion-to-electron temperature ratio in the plasma sheet in geo-magnetotail

Chen

2021

Earth and Planetary Physics

Self Cite

View full text Add to dashboard Cite

The ion-to-electron temperature ratio is a good indicator of the processes involved in solar wind plasma entering and being transported inside Earth's plasma sheet. In this study, we have demonstrated that patchy magnetic reconnection has the potential to preserve the ion-to-electron temperature ratio under certain conditions. If the charged particles are non-adiabatically accelerated no more than once in a single reconnection, the temperature ratio would be preserved; on the other hand, this ratio would not be preserved if they are accelerated multiple times. Consequently, under a northward interplanetary magnetic field (IMF) condition, the reconnection in the nonlinear phase of the Kelvin-Helmholtz instability is the dominant process for solar-originated plasma entering the Earth's magnetosphere, and the ion-to-electron temperature ratio is preserved inside the plasma sheet. When the direction of the IMF is southward, the reflection of electrons from the magnetic mirror point, and subsequent multiple non-adiabatic accelerations at the reconnection site, are the primary reasons for the observed low ion-to-electron temperature ratio close to the Earth at midnight. While reconnections that occur in the night-side far tail might preserve the ratio, turbulence on the boundaries of the bursty bulk flows (BBFs) could change the ratio in the far tail through the violation of the frozen-in condition of the ions. The plateau in the contour of the calculated ion-to-electron temperature ratio in the down tail distance between 40 and 60 Earth radii may explain the strong correlation between the ion and electron temperatures in the outer central plasma sheet, which has not been clearly understood till date.

show abstract

“…The calculated T i / T e ratio in the equatorial plane earthward of 60

R_{e}

is comparable to that reported by Chen CX and Wang CP (2019). In particular, the closer the position is to the Earth, the lower was the ratio.…”

Section: Transport Of Charged Particles Within the Plasma Sheetsupporting

confidence: 89%

Preservation and variation of ion-to-electron temperature ratio in the plasma sheet in geo-magnetotail

Chen

2021

Earth and Planetary Physics

Self Cite

View full text Add to dashboard Cite

show abstract

Contribution of patchy reconnection to the ion to electron temperature ratio in the Earth's magnetotail

Cited by 1 publication

References 13 publications

Preservation and variation of ion-to-electron temperature ratio in the plasma sheet in geo-magnetotail

Preservation and variation of ion-to-electron temperature ratio in the plasma sheet in geo-magnetotail

Contact Info

Product

Resources

About