scholarly journals Correction to “Predicted electron precipitation for a filled loss cone at the top of the auroral electron acceleration region”

1998 ◽  
Vol 25 (20) ◽  
pp. 3797-3797
Author(s):  
W. Calvert
Keyword(s):  
Electron Acceleration ◽  
Electron Precipitation ◽  
Acceleration Region ◽  
Loss Cone ◽  
Auroral Electron

Monitoring of the Electron-Acceleration Region with Auroral Kilometric Radiation

2020 ◽  
Vol 60 (5) ◽  
pp. 538-546
Author(s):  
D. V. Chugunin ◽  
A. A. Chernyshov ◽  
I. L. Moiseenko ◽  
M. E. Viktorov ◽  
M. M. Mogilevsky
Keyword(s):  
Electron Acceleration ◽  
Acceleration Region ◽  
Auroral Kilometric Radiation

Location of the electron acceleration region in solar flares

Solar Physics ◽  
1972 ◽  
Vol 23 (2) ◽  
pp. 457-466 ◽  
Author(s):  
S. R. Kane ◽  
R. P. Lin
Keyword(s):  
Solar Flares ◽  
Electron Acceleration ◽  
Acceleration Region

scholarly journals Comparison between CNA and energetic electron precipitation: simultaneous observation by Poker Flat Imaging Riometer and NOAA satellite

2005 ◽  
Vol 23 (5) ◽  
pp. 1555-1563 ◽  
Author(s):  
Y.-M. Tanaka ◽  
M. Ishii ◽  
Y. Murayama ◽  
M. Kubota ◽  
H. Mori ◽  
...  
Keyword(s):  
Pitch Angle ◽  
Electron Flux ◽  
Energetic Electron ◽  
Energetic Particles ◽  
Electron Precipitation ◽  
Angle Distribution ◽  
Pitch Angle Distribution ◽  
Loss Cone ◽  
Isotropic Pitch ◽  
Trapped Electron

Abstract. The cosmic noise absorption (CNA) is compared with the precipitating electron flux for 19 events observed in the morning sector, using the high-resolution data obtained during the conjugate observations with the imaging riometer at Poker Flat Research Range (PFRR; 65.11° N, 147.42° W), Alaska, and the low-altitude satellite, NOAA 12. We estimate the CNA, using the precipitating electron flux measured by NOAA 12, based on a theoretical model assuming an isotropic pitch angle distribution, and quantitatively compare them with the observed CNA. Focusing on the eight events with a range of variation larger than 0.4dB, three events show high correlation between the observed and estimated CNA (correlation coefficient (r0)>0.7) and five events show low correlation (r0<0.5). The estimated CNA is often smaller than the observed CNA (72% of all data for 19 events), which appears to be the main reason for the low-correlation events. We examine the assumption of isotropic pitch angle distribution by using the trapped electron flux measured at 80° zenith angle. It is shown that the CNA estimated from the trapped electron flux, assuming an isotropic pitch angle distribution, is highly correlated with the observed CNA and is often overestimated (87% of all data). The underestimate (overestimate) of CNA derived from the precipitating (trapped) electron flux can be interpreted in terms of the anisotropic pitch angle distribution similar to the loss cone distribution. These results indicate that the CNA observed with the riometer may be quantitatively explained with a model based on energetic electron precipitation, provided that the pitch angle distribution and the loss cone angle of the electrons are taken into account. Keywords. Energetic particles, precipitating – Energetic particles, trapped – Ionosphere-magnetosphere interactions

scholarly journals High- and low-altitude observations of adiabatic parameters associated with auroral electron acceleration

2000 ◽  
Vol 105 (A2) ◽  
pp. 2541-2550 ◽  
Author(s):  
K. Shiokawa ◽  
W. Baumjohann ◽  
G. Haerendel ◽  
H. Fukunishi
Keyword(s):  
Electron Acceleration ◽  
Auroral Electron ◽  
Low Altitude

Transverse ion acceleration and auroral electron precipitation

1993 ◽  
Vol 13 (4) ◽  
pp. 143-148 ◽  
Author(s):  
R. Arnoldy ◽  
K. Lynch ◽  
P. Kintner ◽  
J. Vago ◽  
C.J. Pollock ◽  
...  
Keyword(s):  
Electron Precipitation ◽  
Ion Acceleration ◽  
Auroral Electron
Sign in / Sign up

Export Citation Format

Share Document