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117 papers · 1 filter
Simulation-based spectral analysis of X-ray CCD data affected by photon pile-up
Tsubasa Tamba, Hirokazu Odaka, Aya Bamba +6
We have developed a simulation-based method of spectral analysis for pile-up affected data of X-ray CCDs without any loss of photon statistics. As effects of the photon pile-up app…
Resurfacing processes constrained by crater distribution on Ryugu
Naofumi Takaki, Yuichiro Cho, Tomokatsu Morota +16
Understanding the geological modification processes on asteroids can provide information concerning their surface history. Images of small asteroids from spacecraft show a depletio…
Origin of cool cores, cold fronts and spiral structures in cool core clusters of galaxies
Hajime Inoue
We consider a situation in which a brightest cluster galaxy (BCG) moves in ambient hot gas in the central region of a cool core cluster of galaxies, following the study by Inoue (2…
Deep Near-infrared Imaging Observation of the Faint X-ray Point Sources Constituting the Galactic Bulge X-ray Emission
Kumiko Morihana, Masahiro Tsujimoto, Ken Ebisawa +1
Presence of the apparently extended hard (2-10 keV) X-ray emission along the Galactic plane has been known since the early 1980s. With a deep X-ray exposure using the Chandra X-ray…
Dissipative Kerr soliton microcombs for FEC-free optical communications over 100 channels
Shun Fujii, Shuya Tanaka, Tamiki Ohtsuka +11
The demand for high-speed and highly efficient optical communication techniques has been rapidly growing due to the ever-increasing volume of data traffic. As well as the digital c…
Distant formation and differentiation of outer main belt asteroids and carbonaceous chondrite parent bodies
H. Kurokawa, T. Shibuya, Y. Sekine +4
Volatile compositions of asteroids provide information on the Solar System history and the origins of Earth's volatiles. Visible to near-infrared observations at wavelengths of $<2…