Chihiro Tao
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View article: How Does Increasing CO <sub>2</sub> Concentration Affect the Ionospheric Sporadic‐E Formation?
How Does Increasing CO <sub>2</sub> Concentration Affect the Ionospheric Sporadic‐E Formation? Open
Increasing CO 2 concentration is known to cause global‐scale changes throughout the atmosphere and ionosphere. However, how the global change affects smaller‐scale ionospheric phenomena remains unclear. This study investigates for the firs…
View article: JWST observations of Jupiter's time variable H3+ auroral emissions
JWST observations of Jupiter's time variable H3+ auroral emissions Open
H3+ is one of the key components of the auroral emissions from the Solar System’s giant planets. Produced from auroral precipitation ionising neutral hydrogen molecules, H3+ can have lifetimes ~100 s in the Jovian ionosphere, leading to hi…
View article: Cultural Characterization Of Urban Blocks And Collaborative Development With Local Cultural Industries: A Case Study Of Nanjing Laomendong
Cultural Characterization Of Urban Blocks And Collaborative Development With Local Cultural Industries: A Case Study Of Nanjing Laomendong Open
The meta-analysis aims to explore the cultural profiling of urban blocks and how collaboration with local cultural industries is developed, with respect to the urban block in Nanjing Laomendong. Based on 22 empirical studies, the research …
View article: Dynamic infrared aurora on Jupiter
Dynamic infrared aurora on Jupiter Open
Auroral emissions are an important diagnostic for a planet’s magnetosphere and upper atmosphere. At the outer planets, the characteristics of emission from the triatomic hydrogen ion $${{\rm{H}}}_{3}^{+}$$ are key to understanding …
View article: Sub‐Auroral Heating at Jupiter Following a Solar Wind Compression
Sub‐Auroral Heating at Jupiter Following a Solar Wind Compression Open
Jupiter's polar aurorae deliver significant heating at the poles, thought to spread across the planet through atmospheric winds. Additionally, ground‐based Keck observations have revealed a large‐scale high‐temperature region, spatially di…
View article: Mass Supply from Io to Jupiter’s Magnetosphere
Mass Supply from Io to Jupiter’s Magnetosphere Open
View article: Estimation of the impact of solar flare spectra on the Earth’s ionosphere using the GAIA model
Estimation of the impact of solar flare spectra on the Earth’s ionosphere using the GAIA model Open
The rapid increase in X-ray and extreme ultraviolet (EUV) emissions owing to solar flares enhances ionization in the ionosphere, increasing radio wave attenuation. Among these phenomena, the shortwave communication disturbance caused by th…
View article: X‐Raying Neutral Density Disturbances in the Mesosphere and Lower Thermosphere Induced by the 2022 Hunga‐Tonga Volcano Eruption‐Explosion
X‐Raying Neutral Density Disturbances in the Mesosphere and Lower Thermosphere Induced by the 2022 Hunga‐Tonga Volcano Eruption‐Explosion Open
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 14 January to 16 January, the Chinese X‐ray astronomy sate…
View article: X-Raying Neutral Density Disturbances in the Mesosphere and Lower Thermosphere induced by the 2022 Hunga-Tonga Volcano Eruption-Explosion
X-Raying Neutral Density Disturbances in the Mesosphere and Lower Thermosphere induced by the 2022 Hunga-Tonga Volcano Eruption-Explosion Open
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 14 January to 16 January, the Chinese X-ray astronomy sate…
View article: Solar Wind Response of the Dawn‐Dusk Asymmetry in the Io Plasma Torus Using the Haleakala T60 and HISAKI Satellite Observations
Solar Wind Response of the Dawn‐Dusk Asymmetry in the Io Plasma Torus Using the Haleakala T60 and HISAKI Satellite Observations Open
Plasma originating from the satellite Io forms a dense plasma region known as the Io plasma torus (IPT) in the Jovian inner magnetosphere. Slightly inside the Io‐orbit is a distinct structure called the “ribbon,” where the plasma spreads a…
View article: Solar wind response of the dawn-dusk asymmetry in the Io plasma torus using the Haleakala T60 and HISAKI satellite observations
Solar wind response of the dawn-dusk asymmetry in the Io plasma torus using the Haleakala T60 and HISAKI satellite observations Open
Plasma originating from the satellite Io forms a dense plasma region known as the Io plasma torus (IPT) in the Jovian inner magnetosphere. Slightly inside the Io-orbit is a distinct structure called the “ribbon,” where the plasma spreads a…
View article: An Ensemble Modeling Framework for Propagating Solar Wind Conditions to Jupiter
An Ensemble Modeling Framework for Propagating Solar Wind Conditions to Jupiter Open
The important question of how the solar wind influences Jupiter’s magnetosphere is difficult to answer due to the lack of consistent up-stream monitoring of the interplanetary medium (IPM) and the large-scale dynamics internal to the magne…
View article: A new rotation period and longitude system for Uranus
A new rotation period and longitude system for Uranus Open
In the absence of any visible solid surface, the rotation period of the giant planets has been inferred from periodic phenomena tied to the magnetic field produced in their deep interior. The main method relied on remote radio auroral obse…
View article: Mass supply from Io to Jupiter's magnetosphere
Mass supply from Io to Jupiter's magnetosphere Open
Since the Voyager mission flybys in 1979, we have known the moon Io to be both volcanically active and the main source of plasma in the vast magnetosphere of Jupiter. Material lost from Io forms neutral clouds, the Io plasma torus and ulti…
View article: The Balance of Internal and External Drivers in Gas Giant Magnetospheres
The Balance of Internal and External Drivers in Gas Giant Magnetospheres Open
The magnetospheres of the gas giants are characterized by strong planetary magnetic fields, rapid rotation, and an intriguing, but not fully characterized, mix of external (solar wind) and internal driving of magnetospheric processes, incl…
View article: A Multi-Model Ensemble System for the outer Heliosphere (MMESH): Solar Wind Conditions near Jupiter
A Multi-Model Ensemble System for the outer Heliosphere (MMESH): Solar Wind Conditions near Jupiter Open
How the solar wind influences the magnetospheres of the outer planets is a fundamentally important question, but is difficult to answer in the absence of consistent, simultaneous monitoring of the upstream solar wind and the large-scale dy…
View article: Investigating Thermal Contrasts Between Jupiter's Belts, Zones, and Polar Vortices With VLT/VISIR
Investigating Thermal Contrasts Between Jupiter's Belts, Zones, and Polar Vortices With VLT/VISIR Open
Using images at multiple mid‐infrared wavelengths, acquired in 2018 May using the Very Large Telescope Imager and Spectrometer (VISIR) instrument on ESO's Very Large Telescope (VLT), we study Jupiter's pole‐to‐pole thermal, chemical and ae…
View article: Investigating Thermal Contrasts Between Jupiter's Belts, Zones, and Polar Vortices with VLT/VISIR
Investigating Thermal Contrasts Between Jupiter's Belts, Zones, and Polar Vortices with VLT/VISIR Open
Using images at multiple mid-infrared wavelengths, acquired in May 2018 using the VISIR instrument on ESO's Very Large Telescope (VLT), we study Jupiter's pole-to-pole thermal, chemical and aerosol structure in the troposphere and stratosp…
View article: Identifying the Variety of Jovian X‐Ray Auroral Structures: Tying the Morphology of X‐Ray Emissions to Associated Magnetospheric Dynamics
Identifying the Variety of Jovian X‐Ray Auroral Structures: Tying the Morphology of X‐Ray Emissions to Associated Magnetospheric Dynamics Open
We define the spatial clustering of X‐rays within Jupiter's northern auroral regions by classifying their distributions into “X‐ray auroral structures.” Using data from Chandra during Juno's main mission observations (24 May 2016 to 8 Sept…
View article: Identifying the variety of jovian X-ray auroral structures: tying the morphology of X-ray emissions to associated magnetospheric dynamics
Identifying the variety of jovian X-ray auroral structures: tying the morphology of X-ray emissions to associated magnetospheric dynamics Open
The data used in Weigt et al., study "Identifying the variety of jovian X-ray auroral structures: tying the morphology of X-ray emissions to associated magnetospheric dynamics". The README.pdf explains what data i…
View article: Identifying the variety of jovian X-ray auroral structures: tying the morphology of X-ray emissions to associated magnetospheric dynamics
Identifying the variety of jovian X-ray auroral structures: tying the morphology of X-ray emissions to associated magnetospheric dynamics Open
The data used in Weigt et al., study "Identifying the variety of jovian X-ray auroral structures: tying the morphology of X-ray emissions to associated magnetospheric dynamics". The README.pdf explains what data i…
View article: Identifying the variety of jovian X-ray auroral structures: tying the morphology of X-ray emissions to associated magnetospheric dynamics
Identifying the variety of jovian X-ray auroral structures: tying the morphology of X-ray emissions to associated magnetospheric dynamics Open
The data used in Weigt et al., study "Identifying the variety of jovian X-ray auroral structures: tying the morphology of X-ray emissions to associated magnetospheric dynamics". The README.pdf explains what data i…
View article: Long-term variability of Jupiter’s northern auroral 8-<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" altimg="si198.svg" display="inline" id="d1e1365"><mml:mi mathvariant="normal">μ</mml:mi></mml:math>m CH<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" altimg="si9.svg" display="inline" id="d1e1370"><mml:msub><mml:mrow/><mml:mrow><mml:mn>4</mml:mn></mml:mrow></mml:msub></mml:math> emissions
Long-term variability of Jupiter’s northern auroral 8-m CH emissions Open
View article: Long term variability of Jupiter's northern auroral 8-micron CH4 emissions
Long term variability of Jupiter's northern auroral 8-micron CH4 emissions Open
We present a study of the long term variability of Jupiter's mid-infrared auroral CH4 emissions. 7.7 - 7.9 micron images of Jupiter recorded by Earth-based telescopes over the last three decades were collated in order to quantify the magni…
View article: Simulation of Dawn‐To‐Dusk Electric Field in the Jovian Inner Magnetosphere via Region 2‐Like Field‐Aligned Current
Simulation of Dawn‐To‐Dusk Electric Field in the Jovian Inner Magnetosphere via Region 2‐Like Field‐Aligned Current Open
The presence of the dawn‐to‐dusk electric field of about 4 mV/m in the Jovian inner magnetosphere and its response to the enhancement of the solar wind dynamic pressure are still a mystery of the rotation‐dominated Jovian magnetosphere. Pr…
View article: Identifying the variety of jovian X-ray auroral structures: tying the morphology of X-ray emissions to associated magnetospheric dynamics
Identifying the variety of jovian X-ray auroral structures: tying the morphology of X-ray emissions to associated magnetospheric dynamics Open
We define the spatial clustering of X-rays within Jupiter’s northern auroral regions by classifying their distributions into ‘X-ray auroral structures’. Using data from Chandra during Juno’s main mission observations (24 May 2016 – 8 Septe…
View article: A high spatial and spectral resolution study of Jupiter's mid-infrared auroral emissions and their response to a solar wind compression
A high spatial and spectral resolution study of Jupiter's mid-infrared auroral emissions and their response to a solar wind compression Open
We present mid-infrared spectroscopy of Jupiter's mid-to-high latitudes using Gemini-North/TEXES (Texas Echelon Cross Echelle Spectrograph) on March 17-19, 2017. These observations capture Jupiter's hydrocarbon auroral emissions before, du…
View article: A High Spatial and Spectral Resolution Study of Jupiter’s Mid-infrared Auroral Emissions and Their Response to a Solar Wind Compression
A High Spatial and Spectral Resolution Study of Jupiter’s Mid-infrared Auroral Emissions and Their Response to a Solar Wind Compression Open
We present mid-infrared spectroscopy of Jupiter's mid-to-high latitudes using the Gemini-North/Texas Echelon Cross Echelle Spectrograph on 2017 March 17–19. These observations capture Jupiter’s hydrocarbon auroral emissions before, during,…
View article: Major results from the Hisaki mission and future perspectives
Major results from the Hisaki mission and future perspectives Open
Hisaki is an earth orbiting extreme ultraviolet spectroscope dedicated for observing solar system planets. Thanks to its monitoring capability, Hisaki has carried out unprecedented continuous observation of Io plasma torus, Jovian aurora, …
View article: Solar UV/EUV effect on the Jovian upper atmosphere and radiation belt
Solar UV/EUV effect on the Jovian upper atmosphere and radiation belt Open