Development of a new wideband heterodyne receiver system for the Osaka 1.85-m mm-submm telescope -- Receiver development & the first light of simultaneous observation in 230GHz and 345GHz bands with an SIS-mixer with 4-21GHz IF output

Sho Masui, Yasumasa Yamasaki, Hideo Ogawa +22

Waveguide-Type Multiplexer for Multiline Observation of Atmospheric Molecules using Millimeter-Wave Spectroradiometer

Taku Nakajima, Kohei Haratani, Akira Mizuno +5

Higgs Amplitude Mode in BCS Superconductors Nb$_{1-x}$Ti$_{x}$N induced by Terahertz Pulse Excitation

Ryusuke Matsunaga, Yuki I. Hamada, Kazumasa Makise +4

MORFEO: Advancing Towards Final Design

Lorenzo Busoni, Guido Agapito, Marco Bonaglia +106

The paper reports on the design progress of MORFEO, the first‑generation adaptive‑optics module for the Extremely Large Telescope, describing its dual MCAO/SCAO operation, key hard…

Black Hole Explorer Mission Development in Japan

Kazunori Akiyama, Mareki Honma, Akihiro Doi +21

Demonstration of a Single-chip Dual-polarization Sideband-separation SIS mixer at 2 mm Band

Wenlei Shan, Shohei Ezaki, Yoshinori Uzawa

ASASSN-18aan: An Eclipsing SU UMa-type Cataclysmic Variable with a 3.6-hour Orbital Period and a Late G-type Secondary Star

Yasuyuki Wakamatsu, John R. Thorstensen, Naoto Kojiguchi +41

Receivers for the Black Hole Explorer (BHEX) Mission

C. Edward Tong, Kazunori Akiyama, Paul Grimes +6

Development of a new wideband heterodyne receiver system for the Osaka 1.85-m mm-submm telescope -- Corrugated horn & Optics covering 210-375 GHz band

Yasumasa Yamasaki, Sho Masui, Hideo Ogawa +21

Experimental Study of a Planar-integrated Dual-Polarization Balanced SIS Mixer

Wenlei Shan, Shohei Ezaki, Keiko Kaneko +3

Revisiting Thermal Scalability for Large-Scale Superconducting Quantum Systems

Shaswot Shresthamali, Ilkwon Byun, Teruo Tanimoto +4

J-GEM optical and near-infrared follow-up of gravitational wave events during LIGO's and Virgo's third observing run

Mahito Sasada, Yousuke Utsumi, Ryosuke Itoh +68

The Japanese Vision for the Black Hole Explorer Mission

Kazunori Akiyama, Kotaro Niinuma, Kazuhiro Hada +43