4 papers
Observational demonstration of a low-cost fast Fourier transform spectrometer with a delay-line-based ramp-compare ADC implemented on FPGA
Atsushi Nishimura, Takeru Matsumoto, Teppei Yonetsu +5
In this study, a novel type of Fourier transform radio spectrometer (termed as all-digital radio spectrometer; ADRS) has been developed in which all functionalities comprising a ra…
Current status and future plan of Osaka Prefecture University 1.85-m mm-submm telescope project
Atsushi Nishimura, Kazuki Tokuda, Ryohei Harada +25
We report the current status of the 1.85-m mm-submm telescope installed at the Nobeyama Radio Observatory (altitude 1400 m) and the future plan. The scientific goal is to reveal th…
OH 18 cm Transition as a Thermometer for Molecular Clouds
Yuji Ebisawa, Hiroshi Inokuma, Nami Sakai +3
We have observed the four hyperfine components of the 18 cm OH transition toward the translucent cloud eastward of Heiles Cloud 2 (HCL2E), the cold dark cloud L134N, and the photod…
Molecular Line Observations of Carbon-Chain-Producing Regions L1495B and L1521B
Tomoya Hirota, Hiroyuki Maezawa, Satoshi Yamamoto
We present the first comprehensive study on physical and chemical properties of quiescent starless cores L1495B and L1521B, which are known to be rich in carbon-chain molecules lik…