Mass of Dark Matter Revealed by Precise Measurements of the Galaxy
The Galactic rotation velocity from this research is higher than that of previously known (220km/s). This results in the conclusion that the mass of the Galaxy, especially that of dark matter, is about 20% larger than what has been previously considered.
A research team, led by Associate Professor Mareki Honma（NAOJ) has reached the following two conclusions:
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The above story is reprinted from materials provided byNational Astronomical Observatory of Japan.
Note: Materials may be edited for content and length.
ScienceDaily (Oct. 5, 2012) — A research team, led by Associate Professor Mareki Honma from the National Astronomical Observatory of Japan (NAOJ), has succeeded in precisely determining the astronomical yardstick for the Galaxy based upon the precise distance measurements with VERA from NAOJ and other advanced radio telescopes. The new findings are that the distance from the sun to the Galactic center is 26,100 light-years, and that the Galactic rotation velocity in the solar system/.../
The Galactic rotation velocity from this research is higher than that of previously known (220km/s). This results in the conclusion that the mass of the Galaxy, especially that of dark matter, is about 20% larger than what has been previously considered.
The above story is reprinted from materials provided byNational Astronomical Observatory of Japan.
Note: Materials may be edited for content and length.
ScienceDaily (Oct. 5, 2012) — A research team, led by Associate Professor Mareki Honma from the National Astronomical Observatory of Japan (NAOJ), has succeeded in precisely determining the astronomical yardstick for the Galaxy based upon the precise distance measurements with VERA from NAOJ and other advanced radio telescopes. The new findings are that the distance from the sun to the Galactic center is 26,100 light-years, and that the Galactic rotation velocity in the solar system/.../
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