User profiles for Keisuke Hosokawa
Keisuke HosokawaUniversity of Electro-Communications Verified email at uec.ac.jp Cited by 3255 |
Relativistic electron microbursts as high‐energy tail of pulsating aurora electrons
…, S Kurita, K Asamura, K Hosokawa… - Geophysical …, 2020 - Wiley Online Library
In this study, by simulating the wave‐particle interactions, we show that subrelativistic/relativistic
electron microbursts form the high‐energy tail of pulsating aurora (PsA). Whistler‐mode …
electron microbursts form the high‐energy tail of pulsating aurora (PsA). Whistler‐mode …
Diffuse and pulsating aurora
This chapter reviews fundamental properties and recent advances of diffuse and pulsating
aurora. Diffuse and pulsating aurora often occurs on closed field lines and involves energetic …
aurora. Diffuse and pulsating aurora often occurs on closed field lines and involves energetic …
[HTML][HTML] Ground-based instruments of the PWING project to investigate dynamics of the inner magnetosphere at subauroral latitudes as a part of the ERG-ground …
…, N Takahashi, K Seki, A Kadokura, K Hosokawa… - Earth, Planets and …, 2017 - Springer
The plasmas (electrons and ions) in the inner magnetosphere have wide energy ranges
from electron volts to mega-electron volts (MeV). These plasmas rotate around the Earth …
from electron volts to mega-electron volts (MeV). These plasmas rotate around the Earth …
Electrostatic electron cyclotron harmonic waves as a candidate to cause pulsating auroras
Pulsating auroras (PsAs) are thought to be generated by precipitating electrons scattered by
lower‐band chorus (LBC) waves near the magnetic equator. One‐to‐one correlation …
lower‐band chorus (LBC) waves near the magnetic equator. One‐to‐one correlation …
Magnetic conjugacy of northern and southern auroral beads
T Motoba, K Hosokawa, A Kadokura… - Geophysical Research …, 2012 - Wiley Online Library
Auroral beads, ie, azimuthally arrayed bright spots resembling a pearl necklace, have
recently drawn attention as a possible precursor of auroral substorms. We used simultaneous, …
recently drawn attention as a possible precursor of auroral substorms. We used simultaneous, …
[HTML][HTML] Aurora in the polar cap: A review
This paper reviews our current understanding of auroral features that appear poleward of the
main auroral oval within the polar cap, especially those that are known as Sun-aligned arcs…
main auroral oval within the polar cap, especially those that are known as Sun-aligned arcs…
[HTML][HTML] Visualization of rapid electron precipitation via chorus element wave–particle interactions
Chorus waves, among the most intense electromagnetic emissions in the Earth’s
magnetosphere, magnetized planets, and laboratory plasmas, play an important role in the …
magnetosphere, magnetized planets, and laboratory plasmas, play an important role in the …
Ionospheric variation during pulsating aurora
K Hosokawa, Y Ogawa - Journal of Geophysical Research …, 2015 - Wiley Online Library
We have statistically analyzed data from the European Incoherent Scatter (EISCAT) UHF/VHF
radars in Tromsø (69.60N, 19.20E), Norway, to reveal how the occurrence of pulsating …
radars in Tromsø (69.60N, 19.20E), Norway, to reveal how the occurrence of pulsating …
Modulation of ionospheric conductance and electric field associated with pulsating aurora
K Hosokawa, Y Ogawa, A Kadokura… - Journal of …, 2010 - Wiley Online Library
We present, for the first time, a quasiperiodic modulation of ionospheric parameters, associated
with the occurrence of pulsating auroras, such as electron density, conductance, and …
with the occurrence of pulsating auroras, such as electron density, conductance, and …
Simultaneous pulsating aurora and microburst observations with ground‐based fast auroral imagers and CubeSat FIREBIRD‐II
…, M Fukizawa, Y Miyoshi, K Hosokawa… - Geophysical …, 2021 - Wiley Online Library
We report on the relationship between a pulsating aurora and a relativistic electron microburst
using simultaneous observations of ground‐based fast auroral imagers with the FIREBIRD…
using simultaneous observations of ground‐based fast auroral imagers with the FIREBIRD…