The Milky Way is a messy eater.The Milky Way is a messy eater.Adrian Price-Whelan(Columbia University)
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The Milky Way
The Milky WayDisk
The Milky WayDiskSpheroid
The Milky WayDiskSpheroidYou are here
The Milky WayHalo
Dark Matter
Dark MatterF = ma
Dark MatterF = maForce = mass x acceleration
Dark MatterF = maForce = mass x accelerationGM1M2r2Gravity
Dark MatterF = maForce = mass x accelerationGM1M2r2Gravity Circularmotion= M1⇥v2r
Dark MatterF = maForce = mass x accelerationGM1M2r2e.g. M2 could be the mass of the SunM1 could be the mass of a planetGravity Circularmotion= M1⇥v2rrM1M2
Dark MatterF = maForce = mass x accelerationGM1M2r2Gravity Circularmotion= M1⇥v2rrM1M2
Dark MatterF = maForce = mass x accelerationGM1M2r2Gravity Circularmotion= M1⇥v2rrM1M2v /r1r
Dark Matterv /r1rvr
Dark Matterv /r1rPredictedvr
Dark Matterv /r1rPredictedvrObserved
Dark Matterv /r1rPredictedDarkMatter!vrObserved
We can use the orbits of streamsto learn about dark matter!
In the neighborhood•What would one of these streams look like from the inside?
Questions?