Results 1 to 10 of about 279 (164)

Chaos in magnetospheric radio emissions [PDF]

Nonlinear Processes in Geophysics, 2002
A three-wave model of auroral radio emissions near the electron plasma frequency was proposed by Chian et al. (1994) involving resonant interactions of Langmuir, whistler and Alfvén waves. Chaos can occur in the nonlinear evolution of this three-wave
A. C.-L. Chian, A. C.-L. Chian, E. L. Rempel, E. L. Rempel, F. A. Borotto, F. A. Borotto, F. A. Borotto   +6 more
doaj   +9 more sources

In situ and remote observations of the ultraviolet footprint of the moon Callisto by the Juno spacecraft [PDF]

Nature Communications
Jupiter exhibits peculiar multiwavelength auroral emissions resulting from the electromagnetic interactions of Io, Europa, and Ganymede with the magnetospheric plasma flow. Characterizing the faint auroral footprint of the fourth Galilean moon, Callisto,
J. Rabia, V. Hue, C. K. Louis, N. André, Q. Nénon, J. R. Szalay, R. Prangé, L. Lamy, P. Zarka, B. Collet, F. Allegrini, R. W. Ebert, T. K. Greathouse, B. Bonfond, G. R. Gladstone, A. H. Sulaiman, W. S. Kurth, J. E. P. Connerney, P. Louarn, E. Penou, A. Kamran, D. Santos-Costa, R. S. Giles, J. A. Kammer, M. H. Versteeg, S. J. Bolton   +25 more
doaj   +2 more sources

Magnetospheric Radio Emissions from Exoplanets with the SKA [PDF]

Proceedings of Advancing Astrophysics with the Square Kilometre Array — PoS(AASKA14), 2015
Not ...
Gregg Hallinan, Philippe Zarka, Joseph Lazio   +2 more
exaly   +4 more sources

Radio emissions reveal Alfvénic activity and electron acceleration prior to substorm onset [PDF]

Nature Communications
Magnetospheric substorms are among the most dynamic phenomena in the Earth’s magnetosphere, yet their triggering mechanisms remain unclear. Ground-based observations have identified wave-like aurora as precursors to substorms.
S. Y. Wu, D. K. Whiter, L. Lamy, M. M. Wang, P. Zarka, C. M. Jackman, S. Y. Ye, J. E. Waters, A. R. Fogg, S. B. Mende, N. Kaweeyanun, Y. Kasaba, S. Kurita, H. Kojima, L. J. Paxton, Y. Kasahara, Y. Miyoshi, A. Shinbori, F. Tsuchiya   +18 more
doaj   +2 more sources

ROME. IV. An Arecibo Search for Substellar Magnetospheric Radio Emissions in Purported Exoplanet-hosting Systems at 5 GHz

The Astrophysical Journal
Plasma flow–obstacle interactions, such as those between an exoplanet’s magnetosphere and the host star’s stellar wind, may lead to detectable radio emissions.
Matthew Route
doaj   +2 more sources

Saturn’s Radio Emissions and their Relation to Magnetospheric Dynamics (invited) [PDF]

PLANETARY RADIO EMISSIONS VII, 2011
With the arrival of the Cassini spacecraft at Saturn in July 2004, there have been quasi-continuous observations of Saturn Kilometric Radiation (SKR) emissions. In this paper we review the response of these emissions to dynamics in Saturn’s magnetosphere, driven by factors internal and external to the system.
exaly   +2 more sources

Quantification of magnetosphere–ionosphere coupling timescales using mutual information: response of terrestrial radio emissions and ionospheric–magnetospheric currents [PDF]

Nonlinear Processes in Geophysics
Auroral kilometric radiation (AKR) is a terrestrial radio emission excited by the same accelerated electrons which excite auroral emissions. Although it is well correlated with auroral and geomagnetic activity, the coupling timescales between AKR and ...
A. R. Fogg, C. M. Jackman, S. C. Chapman, S. C. Chapman, S. C. Chapman, J. E. Waters, A. Bergin, L. Lamy, L. Lamy, K. Issautier, B. Cecconi, X. Bonnin   +11 more
doaj   +3 more sources

Radio Emission and Electric Gaps in Pulsar Magnetospheres

The Astrophysical Journal Letters, 2023
Abstract The origin of pulsar radio emission is one of the old puzzles in theoretical astrophysics. In this Letter, we present a global kinetic plasma simulation that shows from first principles how and where radio emission can be produced in pulsar magnetospheres.
Ashley Bransgrove, Andrei M. Beloborodov, Yuri Levin   +2 more
openaire   +4 more sources

Radio emission in Mercury magnetosphere [PDF]

Astronomy & Astrophysics, 2016
Context: Active stars possess magnetized wind that has a direct impact on planets that can lead to radio emission. Mercury is a good test case to study the effect of the solar wind and interplanetary magnetic field on radio emission driven in the planet magnetosphere. Such studies could be used as proxies to characterize the magnetic field topology and
Varela, J., Reville, V., Brun, A., Pantellini, F., Zarka, Philippe   +4 more
openaire   +3 more sources

Periodic Radio Emission from the T8 Dwarf WISE J062309.94–045624.6

The Astrophysical Journal Letters, 2023
We present the detection of rotationally modulated, circularly polarized radio emission from the T8 brown dwarf WISE J062309.94−045624.6 between 0.9 and 2.0 GHz.
Kovi Rose, Joshua Pritchard, Tara Murphy, Manisha Caleb, Dougal Dobie, Laura Driessen, Stefan W. Duchesne, David L. Kaplan, Emil Lenc, Ziteng Wang   +9 more
doaj   +1 more source