Author

R. Kawabe

2 papers indexed here

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Preprint Sep 2026

Resolved Structure and Orbital Motion of a Localized 1 au-scale Dust Accumulation in the Protoplanetary Disk around TW Hya

We present the results of high-resolution ($\sim1$~au) Atacama Large Millimeter/submillimeter Array (ALMA) observations of the TW~Hya protoplanetary disk in the Band 6 dust continuum, as well as the \ce{^13CO} and \ce{C^18O} J=2--1 emission lines. The primary focus of this study is to investigate the kinematics, intern...

T. Tsukagoshi, T. Muto, H. Nomura et al. · 0 citations

Open access Aug 2026

Millimeter-wave adaptive optics: demonstrating closed-loop correction for lowest Zernike modes

We report on a five-element prototype wavefront sensor for millimeter-wave adaptive optics (MAO), enabling closed-loop correction of tip-tilt and defocus via secondary mirror (M2) displacement. MAO is essential for large ground-based millimeter/submillimeter telescopes to maintain surface accuracy under wind and therma...

Yoichi Tamura, A. Taniguchi, Kotaro Iwakami et al. · Astronomical Telescopes + In... · 0 citations