Results 11 to 20 of about 4,707 (204)

Detecting Magnetospheric Radio Emission from Giant Exoplanets

open access: yesThe Astrophysical Journal, 2022
Abstract As radio astronomy enters a golden age, ground-based observatories are reaching sensitivities capable of unlocking a new and exciting field of exoplanet observation. Radio observation of planetary auroral emission provides unique and complementary insight into planetary science not available via orthodox exoplanet observation ...
Reza Ashtari   +3 more
openaire   +1 more source

Six pieces of evidence against the corotation enforcement theory to explain the main aurora at Jupiter [PDF]

open access: yes, 2020
The most remarkable feature of the ultraviolet auroras at Jupiter is the ever present and almost continuous curtain of bright emissions centered on each magnetic pole and called the main emissions.
Bonfond, Bertrand   +2 more
core   +1 more source

Cassini in situ observations of long duration magnetic reconnection in Saturn’s magnetotail [PDF]

open access: yes, 2015
Magnetic reconnection is a fundamental process in solar system and astrophysical plasmas, through which stored magnetic energy associated with current sheets is converted into thermal, kinetic and wave energy1, 2, 3, 4.
Andre, N   +17 more
core   +5 more sources

Jupiter's X-ray and EUV auroras monitored by Chandra, XXM-Newton, and Hisaki satellite [PDF]

open access: yes, 2016
Jupiter's X-ray auroral emission in the polar cap region results from particles which have undergone strong field-aligned acceleration into the ionosphere.
Badman, S. V.   +19 more
core   +6 more sources

Probing discrete auroral arcs by ionospheric tomography [PDF]

open access: yesAnnales Geophysicae, 1998
Optical observations of 557.7 nm and 630.0 nm emissions from discrete auroral arcs in the post-noon sector have been related to localised field-aligned enhancements in the spatial distribution of E- and F-layer electron density respectively seen in ...
J. Moen   +3 more
doaj   +1 more source

Modulation of NTC frequencies by Pc5 ULF pulsations : experimental test of the generation mechanism and magnetoseismology of the emitting surface [PDF]

open access: yes, 2009
Nonthermal continuum (NTC) radiation is believed to be emitted by the conversion of an electrostatic wave into an electromagnetic one, which takes place at the Earth's magnetic equator.
Anderson   +43 more
core   +3 more sources

ROME. III. The Arecibo Search for Star–Planet Interactions at 5 GHz

open access: yesThe Astrophysical Journal, 2023
After nearly three decades of discovery, many exoplanetary systems have been studied and characterized in detail with one important exception: exoplanet magnetism.
Matthew Route, Alexander Wolszczan
doaj   +1 more source

A Panchromatic View of Brown Dwarf Aurorae [PDF]

open access: yes, 2017
Stellar coronal activity has been shown to persist into the low-mass star regime, down to late M-dwarf spectral types. However, there is now an accumulation of evidence suggesting that at the end of the main sequence there is a transition in the nature ...
Hallinan, Gregg   +2 more
core   +3 more sources

VLF-LF Radio Bursts Observed at Local Onsets of Magnetospheric Substorms

open access: yesAntarctic Record, 1976
Observations of VLF hiss narrow-band intensities (5.0±0.2 kHz, 12.0±0.5 kHz, and 50.0±1.0 kHz), horizontal component (H) of the geomagnetic field, and the ionospheric absorption of cosmic radio noises of 30 MHz have been carried out at Syowa Station ...
Tadanori ONDOH   +3 more
doaj   +1 more source

Unstable Phenomena in Stable Magnetospheres: Searching for Radio Flares from Magnetic OBA Stars Using VCSS

open access: yesThe Astrophysical Journal, 2023
Although the majority of hot magnetic stars have extremely stable, ∼kilogauss strength surface magnetic fields with simple topologies, a subset undergoes small-scale explosions due to centrifugal breakout.
Emil Polisensky   +5 more
doaj   +1 more source

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