activity
20242026
most citedDevelopment of the Timing System for the X-Ray Imaging and Spectroscopy Mission

3 citations · 3 across the 10 of their papers we have counts for

collaborators

10 papers

hep-ex2026

Charged-lepton identification at Belle~II

Belle II Collaboration, M. Abumusabh, I. Adachi +409

Effective particle identification capabilities are a strategic priority for the physics program of the Belle~II experiment. We describe the algorithms used at Belle~II for identify…

hep-ex2026

First evidence of and search for

Belle, Belle II Collaborations, : +412

We search for the pionic transitions and in decays using the Belle and Belle~II data samples c…

astro-ph.HE2026

XRISM Time-resolved Fe K Spectroscopy of NGC 4395: Time-variable Inner-disk Emission

Taiki Kawamuro, Satoshi Yamada, Hirofumi Noda +3

We report the first XRISM observation of the low-mass AGN in the nearby dwarf galaxy NGC 4395 (), complemented by a simultaneous NuSTAR observation…

hep-ex2026

Measurement of mixing-induced CP violation in the decay

Belle II Collaboration, M. Abumusabh, I. Adachi +437

Measurements of charge-parity (CP) violation in quark transitions provide stringent tests of the current theory and sensitive probes of particles or interactions beyond it. We repo…

astro-ph.GA2026

Decoupled Kinematics and Excitation in the Compton-thick AGN NGC 6552: Spatially Resolved KOOLS-IFU Observations

Kyuseok Oh, Yoshihiro Ueda, Kanta Fujiwara +7

Hard X-ray selected Compton-thick AGNs provide a relatively obscuration-resistant census of accretion, but optical line diagnostics can be strongly shaped by extinction and geometr…

astro-ph.HE2026

Winds of Change: XRISM Resolve X-ray spectroscopy of NGC 4051

James Reeves, Shoji Ogawa, Tracey Jane Turner +7

NGC 4051 is a nearby (16.7 Mpc), Narrow Line Seyfert 1 galaxy (NLS1), which has a low black hole mass of M. It is also known for its rapid X-ray variability, on ti…

astro-ph.IM2025

Verification of the Timing System for the X-ray Imaging and Spectroscopy Mission in the GPS Unsynchronized Mode

Megumi Shidatsu, Yukikatsu Terada, Takashi Kominato +59

We report the results from the ground and on-orbit verifications of the XRISM timing system when the satellite clock is not synchronized to the GPS time. In this case, the time is…

astro-ph.GA2025

AGN outflows and their properties in Mrk 766 as revealed by KOOLS-IFU on the Seimei Telescope

Kyuseok Oh, Yoshihiro Ueda, Satoshi Yamada +10

We present the emission-line flux distributions and their ratios, as well as the gas outflow features, of the innermost 2 kpc region of the type 1 Seyfert galaxy Mrk 766, using the…

astro-ph.IM2025★ 3 cited

Development of the Timing System for the X-Ray Imaging and Spectroscopy Mission

Yukikatsu Terada, Megumi Shidatsu, Makoto Sawada +62

This paper describes the development, design, ground verification, and in-orbit verification, performance measurement, and calibration of the timing system for the X-Ray Imaging an…

astro-ph.GA2024

Discovery of a hyperluminous quasar at z = 1.62 with Eddington ratio > 3 in the eFEDS field confirmed by KOOLS-IFU on Seimei Telescope

Yoshiki Toba, Keito Masu, Naomi Ota +17

We report the discovery of a hyperluminous type 1 quasar (eFEDS J082826.9-013911; eFEDSJ0828-0139) at = 1.622 with a super-Eddington ratio (). We perfor…