Stellar streams and fundamental physics

by Jo Bovy

at Physics Colloquium

Thu, 09 Jun 2016, 15:30
Physics building (#54) room 207

Abstract

Stellar tidal streams originating from disrupting globular clusters in the Milky Way s halo hold enormous promise as probes of both the large scale structure of the Milky Way halo s density distribution and its small scale structure As such the observed density spatial and kinematic structure of stellar streams can provide important new constraints on the interactions and small scale structure of dark matter I will discuss the simple gravitational dynamics of tidal stream formation and evolution and how we can use it to build simple and fast models for tidal streams I will further present a fast perturbation theory for computing the effects of impacts between a stream and many small dark matter subhalos and its application to existing and future data sets Refreshments are served at 3:20pm

Created on 18-05-2016 by Bar Lev, Yevgeny (ybarlev)
Updaded on 18-05-2016 by Bar Lev, Yevgeny (ybarlev)