Results 41 to 50 of about 4,735 (200)

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.
openaire   +1 more source

Solar Wind‐Magnetosphere‐Ionosphere Coupling During the October 2024 Storms

Journal of Geophysical Research: Space Physics, Volume 131, Issue 5, May 2026.
Abstract Two geomagnetic storms occurred in October 2024 (Oct 6‐9 and 10–12), driven by the impact of a series of interplanetary coronal mass ejections on the magnetosphere. The first was a moderate storm, with peak Sym‐H near −150 nT, whereas the second was intense, Sym‐H reaching −340 nT.
S. E. Milan, M. K. Mooney, G. E. Bower, R. M. Hodnett, U. V. Amerstorfer, C. Möstl, A. Samsonov, B. J. Anderson, J. Gjerloev, S. K. Vines   +9 more
wiley   +1 more source

Radio emission altitudes in the pulsar magnetosphere

The Astrophysical Journal, 1992
Multifrequency timing measurements of four pulsars were used to search for propagation delays predicted by the radius-to-frequency mapping (RFM) model of pulsar radio emission. The RFM model specifies that emissions at different frequencies are produced at different altitudes in the pulsar magnetosphere.
openaire   +1 more source

Frequency‐Dependent Latitudinal Distributions of Plasmaspheric Plume Hiss Directionality and Amplitude

Geophysical Research Letters, Volume 53, Issue 8, 28 April 2026.
Abstract Plasmaspheric plume hiss plays a crucial role in shaping Earth's electron radiation belts and influencing magnetosphere–ionosphere energy coupling. However, its generation mechanism remains contested between cyclic‐linear and localized‐nonlinear models. By analyzing over 64,000 high‐resolution plume hiss wave segments from the Van Allen Probes
Zhiyong Wu, Zhenpeng Su, Huinan Zheng, Yuming Wang   +3 more
wiley   +1 more source

Revealing the Unseen: The Discovery of Long-awaited Radiation from the Intermittent Pulsar PSR B1931+24

The Astrophysical Journal Letters
Pulsars are typically characterized by their stable, highly magnetized, and fast-rotating nature, which underpins their persistent radio emissions. However, the discovery of prolonged radio-quiet (“off”) states in intermittent pulsars, such as PSR B1931 ...
Abdujappar Rusul, Z. G. Wen, J. P. Yuan, Ali Esamdin, X. P. Zheng, Michael Kramer   +5 more
doaj   +1 more source

Gamma-Ray Emissions from Pulsars: Spectra of the TEV Fluxes from Outer-Gap Accelerators

, 2000
We study the gamma-ray emissions from an outer-magnetospheric potential gap around a rotating neutron star. Migratory electrons and positrons are accelerated by the electric field in the gap to radiate copious gamma-rays via curvature process.
Aschenbach B., Becker W., Bowden C. C. G., Caswell J. L., Daishido T., Edwards P. G., El-Gowhari A., Gil J. A., Hirotani K., Hirotani K., K. Hirotani, Kanbach G., Krause-Polstoff J., Krause-Polstoff J., Kurt V. G., Manchester R. N., Miyazaki J., Nolan P. L., Ochelkov Yu. P., Ochelkov Yu. P., Pavlov G. G., Shearer A., Shibanov Yu. A., Zavlin V. E., Zavlin V. E., Zavlin V. E.   +25 more
core   +1 more source

Do Migrating Semidiurnal Tidal Winds From the Lower Atmosphere Control Thermospheric Winds?

Geophysical Research Letters, Volume 53, Issue 7, 16 April 2026.
Abstract Lower atmospheric tides are important for driving the thermospheric and ionospheric structure. The effects of different lower atmospheric migrating semidiurnal tidal fields of neutral density, temperature, and winds on the thermospheric winds are investigated by using the global ionosphere‐thermosphere model with forcing of the tides at the ...
Chen Wu, Aaron J. Ridley
wiley   +1 more source

Locating the source field lines of Jovian decametric radio emissions

Earth and Planetary Physics, 2020
Decametric (DAM) radio emissions are one of the main windows through which one can reveal and understand the Jovian magnetospheric dynamics and its interaction with the moons. DAMs are generated by energetic electrons through cyclotron-maser instability.
YuMing Wang, XianZhe Jia, ChuanBing Wang, Shui Wang, Vratislav Krupar   +4 more
doaj   +1 more source

Towards a theory of extremely intermittent pulsars II: Asteroids at a close distance [PDF]

, 2013
We investigate whether there may be one or many companions orbiting at close distance to the light cylinder around the extremely intermittent pulsars PSR B1931+24 and PSR J1841-0500.
Bonazzola, Silvano, Heyvaerts, Jean, Mottez, Fabrice   +2 more
core   +3 more sources

Global Effects of Chorus and Hiss Waves on Trapped Energetic Electrons at Jupiter

Geophysical Research Letters, Volume 53, Issue 7, 16 April 2026.
Abstract Unlike Earth, where whistler‐mode chorus is generally observed outside the plasmasphere and hiss is predominantly confined within it, Jupiter's magnetosphere frequently hosts both wave modes simultaneously. Using Juno observations, we present a global survey of whistler‐mode waves at Jupiter, demonstrating that both chorus and hiss are ...
W. Li, Q. Ma, W. S. Kurth, G. B. Hospodarsky, S. J. Bolton   +4 more
wiley   +1 more source