Takahiro Iwata

Photometrically-corrected M3 reflectance lunar maps for "Updated in-flight calibration of the Hayabusa2/NIRS3 spectrometer: new global near-infrared photometric properties of asteroid (162173) Ryugu"

Antonin Wargnier, Eri Tatsumi, Koki Yumoto, Mayumi Ichikawa et autres

The datasets contain the data from the paper ‌"Updated in-flight calibration of the Hayabusa2/NIRS3 spectrometer: new global near-infrared photometric properties of asteroid (162173) Ryugu" (PSJ, 2026). The data include two photometrically-corrected (i = 30 deg, e = 0 deg, phase = 30 …

jp, es (code pays fourni par la source)

Photometrically-corrected M3 reflectance lunar maps for "Updated in-flight calibration of the Hayabusa2/NIRS3 spectrometer: new global near-infrared photometric properties of asteroid (162173) Ryugu"

Antonin Wargnier, Eri Tatsumi, Koki Yumoto, Mayumi Ichikawa et autres

The datasets contain the data from the paper ‌"Updated in-flight calibration of the Hayabusa2/NIRS3 spectrometer: new global near-infrared photometric properties of asteroid (162173) Ryugu" (PSJ, 2026). The data include two photometrically-corrected (i = 30 deg, e = 0 deg, phase = 30 …

jp, es (code pays fourni par la source)

Observation of Diffuse Galactic Light Near the Galactic Center with ONC-T on Board Hayabusa2

Kei Sano, Yuto Tome, Kana Kurosaki, Kohji Tsumura et autres

Abstract Diffuse Galactic light (DGL) is starlight scattered by interstellar dust. In visible wavelengths, earlier studies observed DGL toward regions of low optical depth in high Galactic latitude, and show marginal consistency with a theoretical model assuming single scattering by dust grains. …

To constrains the origin of Phobos and Deimos by MIRS/MMX imaging spectrometer

M. A. Barucci, Tomoki Nakamura, S. Fornasier, F. Merlin et autres

The JAXA MMX (Martian Moon eXploration) mission will be launched in October 2026 to the Martian system to carry out three years observations of the Martian moons, and to bring back to Earth at least 10 g samples from Phobos. The primary …

fr, jp, it (code pays fourni par la source)

Small-Scale Subsurface Structure Detection using Lunar Radar Sounder and Surface Scattering Simulations Based on GAN-Generated DEM

Hitoshi Nozawa, J. Haruyama, Atsushi Kumamoto, Kosei Toyokawa et autres

Introduction: Understanding the subsurface structure is important for elucidating a planet’s geological evolution and thermal environment from its formation to the present. The Lunar Radar Sounder (LRS) onboard SELENE has detected buried regolith layers formed between subsurface lava flows [1]. While most …

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Calibration of the Hayabusa2 near-infrared spectrometer using laboratory spectra of Ryugu samples

K. Kitazato, Masanao Abe, Kentaro Hatakeda, Toru Yada et autres

On December 6, 2020, JAXA's Hayabusa2 spacecraft successfully returned to Earth a re-entry capsule containing samples from the carbonaceous asteroid (162173) Ryugu. The capsule, recovered in South Australia, was transported to JAXA's curation facility in Sagamihara, Japan, where the sample container was …

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Detection of Small-Scale Subsurface Echoes Using Lunar Radar Sounder and Surface Scattering Simulations with a DEM Generated Using a Generative Adversarial Network

Hitoshi Nozawa, J. Haruyama, Atsushi Kumamoto, Takahiro Iwata et autres

Spaceborne radar is a powerful tool for probing planetary subsurface structures. Earlier radar studies of the Moon have primarily examined large-scale horizontal structures. However, recent discoveries of vertical holes suggesting the existence of lava tubes and theoretically predicted subsurface gas voids formed …

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Design and performance of MIRS infrared imaging spectrometer onboard MMX mission

Pernelle Bernardi, Jean-Michel Réess, Matthieu Castelnau, F. Chapron et autres

Understanding the origin of the Martian moons is the main objective of the JAXA MMX (Martian Moons eXploration) mission, that will be launched in October 2026. Among the 13 instruments composing the payload, MIRS is an infrared imaging spectrometer that will map …

fr, jp (code pays fourni par la source)

Lunar meter-wave telescope (TSUKUYOMI) as one of Japanese lunar plans

Satoru Iguchi, Tōru Yamada, Yasumasa Yamasaki, Toshikazu Onishi et autres

Aim to Japan's participation in the Artemis program in the 2030s in mind, we pursue the feasibility studies of lunar telescope, including astronomical observations. Focusing on the meter-wavelength observations (observing frequency of lower than 50MHz), which cannot be observed in the harsh …

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Status of geospace x-ray imager mission (GEO-X)

Yuichiro Ezoe, Ryu Funase, Harunori Nagata, Yoshizumi Miyoshi et autres

GEO-X (GEOspace X-ray imager) is a small satellite mission to visualize the Earth’s magnetosphere through Solar Wind Charge eXchange (SWCX). SWCX is known as soft X-ray emissions generated by the charge exchange between highly charged-state heavy ions and neutral atoms in the …

jp (code pays fourni par la source)

Low-frequency antenna design to observe the 21 cm global signal from the Dark Ages with the lunar telescope, TSUKUYOMI

Takeru Matsumoto, Yasumasa Yamasaki, Toshikazu Onishi, Satoru Iguchi et autres

Low-frequency radio observations below 50 MHz on the Moon are not subject to some radio interference, allowing for the study before the formation of the first star, which is impossible from the Earth. Our lunar observatory project, TSUKUYOMI, aims to observe the …

jp (code pays fourni par la source)

A 1–50 MHz short dipole antenna for observing the 21 cm global signal on the Moon

Yasumasa Yamasaki, Takeru Matsumoto, Satoru Iguchi, Toshikazu Onishi et autres

We have planned the Lunar observatory project, TSUKUYOMI aiming to meter-wavelength observations on the Moon. One of the scientific objectives is to observe the 21 cm global signal from the Dark Ages using the 1–50 MHz observing frequency range. The receiving system …

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