86 citations · 151 across the 6 of their papers we have counts for
6 papers
First Observation of Multiple Very-Near-Earth Reconnection Events During a Single Storm Main Phase
Fekireselassie Beyene, Vassilis Angelopoulos, Christine Gabrielse +11
For the first time, this paper presents three very-near-Earth reconnection (VNERX) events observed within the same 12-hour-long storm main phase. The THEMIS inner probes observed t…
The Extreme Space Weather Event of 1872 February: Sunspots, Magnetic Disturbance, and Auroral Displays
Hisashi Hayakawa, Edward W. Cliver, Frédéric Clette +19
We review observations of solar activity, geomagnetic variation, and auroral visibility for the extreme geomagnetic storm on 1872 February 4. The extreme storm (referred to here as…
X-Raying Neutral Density Disturbances in the Mesosphere and Lower Thermosphere induced by the 2022 Hunga-Tonga Volcano Eruption-Explosion
Satoru Katsuda, Hiroyuki Shinagawa, Hitoshi Fujiwara +14
We present X-ray observations of the upper atmospheric density disturbance caused by the explosive eruption of the Hunga Tonga-Hunga Ha'apai (HTHH) volcano on 15 January 2022. From…
Electron Power-Law Spectra in Solar and Space Plasmas
M. Oka, J. Birn, M. Battaglia +10
Particles are accelerated to very high, non-thermal energies in solar and space plasma environments. While energy spectra of accelerated electrons often exhibit a power law, it rem…
Spectral Structures and Their Generation Mechanisms for Solar Radio Type-I Bursts
Kazumasa Iwai, Yoshizumi Miyoshi, Satoshi Masuda +3
The fine spectral structures of solar radio type-I bursts were observed by the solar radio telescope AMATERAS. The spectral characteristics, such as the peak flux, duration, and ba…
Discovery of Diffuse Hard X-ray Emission around Jupiter with Suzaku
Yuichiro Ezoe, Kumi Ishikawa, Takaya Ohashi +4
We report the discovery of diffuse hard (1-5 keV) X-ray emission around Jupiter in a deep 160 ks Suzaku XIS data. The emission is distributed over ~16x8 Jovian radius and spatially…