WebSep 8, 2024 · This discovery has given considerable impetus to radio astronomy research and has allowed to highlight the spiral structure of our Galaxy and its rotation curve. … WebJun 9, 2009 · Rotation curve of a typical spiral galaxy: predicted and observed. The rotation curve of a galaxy is a graph that plots the orbital velocity of the stars or gas in the galaxy …
The Alternative to Dark Matter May be General Relativity Itself
WebObservations of the spiral galaxy NGC 3198 in the 21-cm line are presented. The H I distribution extends to about two Holmberg radii and the radial velocity field is symmetric and regular over the entire area. A new method for the derivation of rotation curves is described. Results obtained show that the rotation curve of NGC 3198 is flat to ... WebAtmospheric cyclones have smaller length- and time-scales and involve different forces than self-gravitating galaxies, yet their images and rotation curves strongly resemble those of … thermotron ast-35
Galaxies - Astronomy Notes
WebThe interpretation of rotation curves of spiral galaxies as evidence of DM halos was probably first proposed by Freeman (1970) who noticed that the expected Keplerian … WebWhat the rotation curve B tells us is that our model of the Milky Way so far is missing something. In order for objects far from the center of the Galaxy to be moving faster than predicted, there must be significant additional … WebJun 28, 2024 · The rotation curve shows how orbital speeds in a galaxy depend on their distance from the galaxy's center. ... In the 1970s, Vera Rubin (lived 1928-2016) found that in spiral galaxies, the rotation curve remains at about the same value at great distances from the center (it is said to be ``flat''). tracey c wallace md