activity
20032026
most citedJ-GEM observations of an electromagnetic counterpart to the neutron star merger GW170817

206 citations · 1.2k across the 53 of their papers we have counts for

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14 papers · 1 filter

astro-ph.EP2026

Simultaneous Tricolor Video Observations of Three Tiny Near-Earth Asteroids with Sub-Minute Rotation Periods

Jin Beniyama, Ryou Ohsawa, Shigeyuki Sako +4

Studying the physical properties of near-Earth asteroids (NEAs) is crucial for understanding their dynamical histories and origins, and assessing impact hazards to Earth. Tiny NEAs…

astro-ph.EP2026

An optical transient candidate of 2-second duration captured by wide-field video observations

Noriaki Arima, Mamoru Doi, Shigeyuki Sako +14

Recent time-domain surveys have revealed rapid transients that evolve on timescales of days, expanding the transient population into the short-duration regime. The tr…

astro-ph.EP2025

Second-timescale Glints from Satellites and Space Debris Detected with Tomo-e Gozen

Masaomi Tanaka, Ichiro Takahashi, Naoki Yoshida +17

A search for second-timescale optical transients is one of the frontiers of time-domain astronomy. However, it has been pointed out that reflections of sunlight from Earth-orbiting…

astro-ph.EP2023

Multicolor Photometry of Tiny Near-Earth Asteroid 2015 RN Across a Wide Range of Phase Angles: Possible Mission Accessible A-type Asteroid

Jin Beniyama, Ryou Ohsawa, Chrysa Avdellidou +10

Studying small near-Earth asteroids is important to understand their dynamical histories and origins as well as to mitigate the damage of the asteroid impact to the Earth. We repor…

astro-ph.EP2023★ 12 cited

Photometry and Polarimetry of 2010 XC: Observational Confirmation of E-type Near-Earth Asteroid Pair

Jin Beniyama, Shigeyuki Sako, Katsuhito Ohtsuka +16

Asteroid systems such as binaries and pairs are indicative of physical properties and dynamical histories of the Small Solar System Bodies. Although numerous observational and theo…

astro-ph.EP2022★ 7 cited

Simultaneous Multicolor Photometry of the DESTINY target asteroid (3200) Phaethon

Jin Beniyama, Tomohiko Sekiguchi, Daisuke Kuroda +11

Accurate estimation of brightness of (3200) Phaethon up to lower phase angles are essential for planning of the on-board camera of the DESTINY mission. We have carried out in…