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The Rotation of Spiral Galaxies
Science, 1983There is accumulating evidence that as much as 90 percent of the mass of the universe is nonluminous and is clumped, halo-like, around individual galaxies. The gravitational force of this dark matter is presumed to be responsible for the high rotational velocities of stars and gas in the disks of spiral galaxies.
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Bisymmetric Spiral Magnetic Fields in Spiral Galaxies
1987A radio polarization analysis was presented in 1978 by TOSA and FUJIMOTO [1] to determine a large-scale configuration of magnetic fields in the spiral galaxy M51. On the basis of the distributions of planes of polarization at 6 cm and 21 cm [2], they determined the rotation measures (RMs) of the Faraday effect and the intrinsic polarization angles. The
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Phenomenology of Spiral Galaxies
1975Galaxies have probably been formed from fluctuations in density and motion in the universe. Many cosmologists have suggested that the separation into individual units took place around the time of decoupling of matter and radiation, when the radius of the universe was about 1/1000th of the present radius.
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Rotation Curves of Spiral Galaxies
Annual Review of Astronomy and Astrophysics, 2001Yoshiaki Sofue
exaly