Author

Y. Harikane

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Review Aug 2026

Progress of the concept study of GREX-PLUS: Galaxy Reionization Explorer and Planetary Universe Spectrometer

GREX-PLUS (Galaxy Reionization EXplorer and PLanetary Universe Spectrometer) is an ISAS/JAXA Strategic L-class mission candidate for the 2030s. The 1.0 m primary mirror, 50 K cryogenic telescope will have a wide-field camera (WFC) with a 0.5 square degree field-of-view in the 2–8 μm wavelength band. An optional high-re...

A. Inoue, I. Yamamura, Toyoaki Suzuki et al. · Astronomical Telescopes + In... · 2 citations

Review Oct 2026

Too many or too bright? Status and perspectives in the study of the UV Luminosity Function at z>10

The finding that galaxies in the first 500Myr were much more numerous and/or brighter than expected is often cited as one of the main discoveries of the James Webb Space Telescope in its first four years of operation. This result is now solidly based on an impressive number of surveys that have detected, spectroscopica...

A. Fontana, H. Atek, V. Bromm et al. · 0 citations

Review Sep 2026

SN Helios: A Multiply Imaged Type II Supernova Opening Time-Delay Cosmography beyond redshift of 3

We report the discovery and spectroscopic confirmation of SN Helios, a strongly lensed, multiply imaged Type II supernova (SN) at $z=3.34$ behind the galaxy cluster RXC J0018.5+1626. The transient was identified as a red F150W-dropout source (F277W = 26.1 mag) in JWST/NIRCam imaging taken on 2026 July 3 for the VENUS s...

S. Fujimoto, C. Larison, J. Pierel et al. · 0 citations