A research team led by researchers from the Mizusawa VLBI Observatory of the National Astronomical Observatory and Kagoshima University combined the observation data of radio telescopes from four domestic observatories such as Oshu City in Iwate Prefecture and Ishigaki City in Okinawa Prefecture to combine the observation data of the distance to the celestial body and the celestial body. The results of 4 years of position astronomical observations that accurately measure motion are summarized in 20 papers.
According to the National Astronomical Observatory of Japan, the research results were announced in the special issue of the Publications of the Astronomical Society of Japan in August 2020.Among them, the survey data of 8 objects obtained by the observations so far were released, and the spiral structure of the Milky Way galaxy was clearly grasped.
By combining the observation data of the research group with the observation data of other groups, the basic scale of the Milky Way galaxy was determined with higher accuracy.As a result, the distance from the solar system to the center of the Milky Way galaxy was 2 light-years, and the galaxy rotation speed at the position of the solar system was 5,800 km / s.
The distance to the center of the Milky Way galaxy was 1985 light-years by the International Astronomical Union in 2, but it was smaller than that.The estimated distance from the orbit of a celestial body revolving in a supermassive black hole in the center of the Milky Way galaxy is 7,700 to 2 light-years, which is consistent with this.
Koichi Hagiuda, Minister of Education, Culture, Sports, Science and Technology, visited the Mizusawa VLBI Observatory VERA Ishigakijima Bureau and the National Ishigakijima Astronomical Observatory in Ishigaki City, Okinawa Prefecture, and said, "We would like to support the Ministry of Education, Culture, Sports, Science and Technology so that these facilities can play an even greater role."
reference:[National Astronomical Observatory] 20 years of VERA project results are summarized — National Astronomical Observatory of Japan Mizusawa 120 years of history achieved high accuracy of position astronomy —
[Ministry of Education, Culture, Sports, Science and Technology] Minister Hagita visits Okinawa and visits Mizusawa VLBI Observatory VERA Ishigakijima Bureau and Okinawa Institute of Science and Technology Graduate University.
