Results 21 to 30 of about 128,048 (265)

The polarisation of auroral emissions: A tracer of the E region ionospheric currents

open access: yesJournal of Space Weather and Space Climate, 2022
It is now established that auroral emissions as measured from the ground are polarised. The question of the information given by this polarisation is still to be explored.
Bosse Léo   +9 more
doaj   +1 more source

Flow Shears at the Poleward Boundary of Omega Bands Observed During Conjunctions of Swarm and THEMIS ASI

open access: yesGeophysical Research Letters, 2018
Omega bands are curved aurora forms that evolve from a quiet arc located along the poleward edge of a diffuse auroral band within the midnight to morningside auroral oval. They usually propagate eastward. Because omega bands are a significant contributor
Jiang Liu   +7 more
doaj   +1 more source

Conjunction Ground Triangulation of Auroras and Magnetospheric Processes Observed by the Van Allen Probe Satellite near 6 Re

open access: yesUniverse, 2023
Conjunction observations of auroras with electron distributions and broadband electrostatic fluctuations on Van Allen Probe A satellite in the equatorial region are considered.
Boris V. Kozelov, Elena E. Titova
doaj   +1 more source

On the frequency of auroras over Germany

open access: yesGeofísica Internacional, 2011
Se muestra una recopilación de 171 observaciones de auroras alemanas entre 1946 y 1964, las cuales no se habían publicado previamente. Los datos se analizaron en relación con el índice Kp, el número de manchas solares y las variaciones estacionales ...
Wilfried Schröder
doaj   +1 more source

A watercolor painting of northern lights seen above Japan on 11 February 1958

open access: yesJournal of Space Weather and Space Climate, 2019
A 61 years old watercolor painting of red aurora was recently provided from a Japanese citizen, and it contributed to understand the detailed time evolution around the peak time of the large magnetic storm on 11 February 1958.
Kataoka Ryuho, Kazama Shigeru
doaj   +1 more source

Reconsideration on the concept model of throat aurora

open access: yes地球与行星物理论评, 2022
The solar wind-magnetosphere-ionosphere coupling driven by the solar wind is a systematic process that involves the buffering of magnetosheath and the response and feedback of magnetosphere and ionosphere.
Desheng Han, Huixuan Qiu, Run Shi
doaj   +1 more source

UVS Observations of Ganymede's Aurora During Juno Orbits 34 and 35

open access: yesGeophysical Research Letters, 2022
On 7 June 2021, Juno‐UVS mapped Ganymede's auroral emissions near a closest approach altitude of 1,046 km. The high spatial resolution map exhibits bright, 200–1,000 R, oxygen emissions organized into northern and southern auroral ovals.
T. K. Greathouse   +14 more
doaj   +1 more source

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