Results 41 to 50 of about 279 (164)

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

Sprites Observed by ASIM: First Imaging Data Set and Temporal UV Emission Patterns

Journal of Geophysical Research: Atmospheres, Volume 131, Issue 14, 28 July 2026.
Abstract We present the first data set analysis of 41 imaging‐confirmed sprite events detected by the ASIM‐MMIA instrument. They were visible in the 337 nm camera images from an initial list of 102 candidates identified by the ultraviolet (UV 180–230 nm) photometer.
J. A. López, J. Montanyà, O. van der Velde, D. Romero, J. Navarro‐González, V. Reglero, O. Chanrion, T. Neubert, N. Østgaard   +8 more
wiley   +1 more source

Radio Emission from UV Cet: Auroral Emission from a Stellar Magnetosphere

The Astrophysical Journal, 2022
Abstract The archetypical flare star UV Cet was observed by MeerKAT on 2021 October 5–6. A large radio outburst with a duration of ∼2 hr was observed between 886 and 1682 MHz, with a time resolution of 8 s and a frequency resolution of 0.84 MHz, enabling sensitive dynamic spectra to be formed. The emission is characterized by three peaks
T. S. Bastian, W. D. Cotton, G. Hallinan
openaire   +3 more sources

Ultra‐Low‐L Sub‐MeV Electron Microbursts During the May 2024 Super Storm

Geophysical Research Letters, Volume 53, Issue 14, 28 July 2026.
Abstract During the May 2024 super storm, we identified sub‐second microburst‐type relativistic electron precipitation events at McIlwain's L∼2 $L\sim 2$ in low‐Earth orbit using the Gamma‐ray Burst Monitor (CGBM) onboard the CALorimetric Electron Telescope on the International Space Station.
Miki Kurihara, Satoshi Nakahira, Ryuho Kataoka, Yoshizumi Miyoshi, Yuto Katoh, Kazutaka Yamaoka, Yuta Kawakubo, Ken Ebisawa, Shoji Torii, Kazuhiro Yamamoto, Atsuki Shinbori, Shoya Matsuda, Yoshiya Kasahara, Fuminori Tsuchiya, Iku Shinohara, Lauren W. Blum, Alessandro Bruno   +16 more
wiley   +1 more source

RRAT J1541+4703: A Rotating Radio Transient Exhibiting Normal Pulsar States

The Astrophysical Journal
Rotating radio transients (RRATs) are a class of pulsar-like objects characterized by intermittent radio emissions. Among them, RRATs that exhibit both RRAT and normal pulsar (NP) states may represent a key evolutionary stage from nulling pulsars to ...
Xin Xu, Qijun Zhi, Jie Tian, Jiguang Lu, Peng Jiang, Shijun Dang, Renxin Xu, Juntao Bai, Ke Yang   +8 more
doaj   +1 more source

Interplanetary Tracking of the 23 March 2024 CME: Computer Tomographic Analyses of IPS, White‐Light, and Type II Radio Burst Observations

Journal of Geophysical Research: Space Physics, Volume 131, Issue 7, July 2026.
Abstract We analyze the propagation of a coronal mass ejection (CME) observed on 23 March 2024, at 01:25 UT by SOHO/LASCO using a multi‐instrument and multi‐method approach. The study combines Interplanetary Scintillation (IPS), type II radio bursts, white‐light, in‐situ observations, and 3D tomographic reconstruction of the inner heliospheric density.
G. Baron, E. Aguilar‐Rodríguez, O. Chang, M. M. Bisi, B. V. Jackson, J. C. Mejía‐Ambriz, R. A. Fallows, Whitham D. Reeve, C. Monstein, Javier Bussons Gordo, Manuel Prieto Mateo   +10 more
wiley   +1 more source

Superluminal Wave Activation at Relativistic Magnetized Shocks

The Astrophysical Journal Letters
Fast radio bursts (FRBs) are extremely energetic radio transients, where some are generated in magnetar magnetospheres and winds. Despite a growing number of observations, their emission mechanisms remain elusive.
Jens F. Mahlmann, Logan Eskildsen, Arno Vanthieghem, Dawei Dai, Lorenzo Sironi   +4 more
doaj   +1 more source

Coherent Radio Emission from a Twisted Magnetosphere after a Magnetar-quake [PDF]

The Astrophysical Journal, 2019
Abstract Magnetars are a class of highly magnetized, slowly rotating neutron stars, only a small fraction of which exhibit radio emission. We propose that the coherent radio curvature emission is generated by net charge fluctuations from a twist-current-carrying bundle (the j-bundle) in the scenario of magnetar-quake.
Weiyang Wang, Bing Zhang, Xuelei Chen, Renxin Xu   +3 more
openaire   +3 more sources

Interactions of Sublimated Frost With Volcanic Plumes: Modeling Io's SO2 Atmosphere Using the DSMC Method

Journal of Geophysical Research: Planets, Volume 131, Issue 7, July 2026.
Abstract Io's tenuous atmosphere consists primarily of sulfur dioxide (SO2 ${\text{SO}}_{2}$) with observed column densities of approximately 1016−1017 $1{0}^{16}-1{0}^{17}$ cm−2 ${\text{cm}}^{-2}$. However, it remains uncertain whether the sublimation of SO2 ${\text{SO}}_{2}$ surface frost or volcanic outgassing is the primary source of the SO2 ...
Leander Schlarmann, Audrey Vorburger, Tim Mosimann, Nicolas Thomas, Peter Wurz   +4 more
wiley   +1 more source

Detection of Hidden Emissions in Two Rotating Radio Transients with High Surface Magnetic Fields

The Astrophysical Journal Letters
Rotating radio transients (RRATs) are neutron stars emitting sporadic radio pulses. The unique emission of RRATs has been proposed to resemble those of known pulsar types, such as extreme nulling pulsars or pulsars with giant pulses.
S. B. Zhang, X. Yang, J. J. Geng, Y. P. Yang, X. F. Wu   +4 more
doaj   +1 more source