ASTRON 2B03 Lecture Notes - Virgo Cluster, Local Group, Observable Universe
25 Sep 2013
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Document Summary
Material after mid term weighted a little more heavily. Galactic cannabilism (eating of small galaxies by big galaxies) - classic example happening in the milky way. Lot of mass in the dark matter halo. As they collide, we can separate parts of the galaxy. Even though black holes relatively small, it can affect the whole galaxy around it. Are there things bigger than galaxy clusters: reason she stops at galaxy clusters the largest gravitationally bound systems. Stable system: there are structures on larger scales but are not gravitationally bound. Position plot of stars in the nearby universe. Clearly some overdensities and places where no galaxies at all. Walls where there is a lot of galaxies. As you move away of origin, you can only see the brigher ones: on small scales, big fluctuations wall or void, on bigger scales, looks uniform though.
