How does the presence of a galactic bar influence the angular momentum of gas clouds?
Answer
It forces gas to lose angular momentum, causing it to flow inward
In unbarred galaxies, gas moves in fairly steady circular orbits. However, a bar breaks this symmetry, creating significant gravitational disturbances. These forces cause the gas to lose angular momentum, which prevents it from maintaining its original orbit. As a result, the gas drifts inward, often channeling into the central regions of the galaxy.
#Videos
What Are Barred Spiral Galaxies? - YouTube
Related Questions
What is the approximate prevalence of galactic bars among spiral galaxies?What physical process triggers the initial formation of a galactic bar through disk instability?What specific type of stellar orbital path stabilizes the structure of a galactic bar?How does the presence of a galactic bar influence the angular momentum of gas clouds?What term describes the gradual, internal reconfiguration of matter such as the inward gas drift?What causes a galactic bar to eventually dissolve or fade away?How do external environmental triggers like satellite galaxies influence bar formation?What is the function of corotation resonance in a barred spiral galaxy?Why do spiral arms often emerge from the ends of a galactic bar?What observational challenge complicates the study of the Milky Way's galactic bar?