Hideaki Takemura at The Graduate University for Advanced Studies, SOKENDAI released his research results.
See the URL below for the details.
NAOJ : https://www.nao.ac.jp/news/science/2021/20210416-nro.html
NAOJ Nobeyama Radio Observatory : https://www.nro.nao.ac.jp/news/2021/0416-takemura.html