The Energetic Electron Response to Magnetic Storms: HEO Satellite Observations

2004 ◽  
Author(s):  
J. F. Fennell ◽  
J. B. Blake ◽  
R. Friedel ◽  
S. Kanekal
Keyword(s):  
Energetic Electron ◽  
Magnetic Storms ◽  
Satellite Observations

scholarly journals Studying 630 nm atomic oxygen emission sources during strong magnetic storms in the night mid-latitude ionosphere

2019 ◽  
Vol 5 (2) ◽  
pp. 33-38
Author(s):  
Людмила Леонович ◽  
Lyudmila Leonovich ◽  
Анатолий Тащилин ◽  
Anatoliy Tashchilin ◽  
Сергей Лунюшкин ◽  
...  
Keyword(s):  
Magnetic Storm ◽  
Emission Intensity ◽  
Atomic Oxygen ◽  
Geomagnetic Storms ◽  
Energetic Electron ◽  
Magnetic Storms ◽  
Optical Measurements ◽  
Model Calculations ◽  
Good Agreement ◽  
Red Line

We analyze significant increases in 630 nm atomic oxygen night emissions during very strong geomagnetic storms, using optical measurements, theoretical modeling, and magnetogram inversion technique (MIT) data. It is shown that during strong magnetic storms when electron precipitation equatorial boundary at the night sector expands up to ~40°, the interaction of energetic electron flux with thermospheric components may cause extreme increases in the 630 nm emission intensity. Model calculations of the red line intensity show good agreement with observational data. Using the November 20, 2003 magnetic storm as an example, we have found that oxygen atom collisions with thermal Maxwell and superthermal electrons make a major contribution to the integral emission intensity. Thermospheric density variations during the magnetic storm significantly affect the red line generation.

scholarly journals Ground and satellite observations of low-latitude red auroras at the initial phase of magnetic storms

2013 ◽  
Vol 118 (1) ◽  
pp. 256-270 ◽  
Author(s):  
K. Shiokawa ◽  
Y. Miyoshi ◽  
P. C. Brandt ◽  
D. S. Evans ◽  
H. U. Frey ◽  
...  
Keyword(s):  
Initial Phase ◽  
Magnetic Storms ◽  
Satellite Observations ◽  
Low Latitude

Satellite observations of the geomagnetic field during magnetic storms

1964 ◽  
Vol 69 (13) ◽  
pp. 2669-2688 ◽  
Author(s):  
E. J. Smith ◽  
C. P. Sonett ◽  
J. W. Dungey
Keyword(s):  
Geomagnetic Field ◽  
Magnetic Storms ◽  
Satellite Observations

scholarly journals Studying 630 nm atomic oxygen emission sources during strong magnetic storms in the night mid-latitude ionosphere

2019 ◽  
Vol 5 (2) ◽  
pp. 35-41
Author(s):  
Людмила Леонович ◽  
Lyudmila Leonovich ◽  
Анатолий Тащилин ◽  
Anatoliy Tashchilin ◽  
Сергей Лунюшкин ◽  
...  
Keyword(s):  
Magnetic Storm ◽  
Emission Intensity ◽  
Atomic Oxygen ◽  
Geomagnetic Storms ◽  
Energetic Electron ◽  
Magnetic Storms ◽  
Optical Measurements ◽  
Model Calculations ◽  
Good Agreement ◽  
Red Line

We analyze significant increases in 630 nm atomic oxygen night emissions during very strong geomagnetic storms, using optical measurements, theoretical modeling, and magnetogram inversion technique (MIT) data. It is shown that during strong magnetic storms when electron precipitation equatorial boundary at the night sector expands up to ~40°, the interaction of energetic electron flux with thermospheric components may cause extreme increases in the 630 nm emission intensity. Model calculations of the red line intensity show good agreement with observational data. Using the November 20, 2003 magnetic storm as an example, we have found that oxygen atom collisions with thermal Maxwell and superthermal electrons make a major contribution to the integral emission intensity. Thermospheric density variations during the magnetic storm significantly affect the red line generation.

Results of Latitude Observations with the Floating Zenith Telescope at Mizusawa: Comparisons between the Results Obtained from the Astronomical and Doppler Satellite Observations

1975 ◽  
Vol 26 ◽  
pp. 461-468
Author(s):  
S. Takagi
Keyword(s):  
Photographic Plate ◽  
Satellite Observations ◽  
Pole Motion

In this article, we intended to see whether we can obtain the same pole motion from two kinds of telescopes: the floating zenith telescope (PZT) and the ILS zenith telescope (VZT). The observations with the PZT have been pursued since 1967.0 with a star list whose star places are taken from the PK4 and its supplement. We revised the method of reduction of the observations with the PZT by adopting a variable scale value for the photographic plate (Takagi et al., 1974).

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