2016 - 2017 Astro Seminar Schedule

DateEvent TypeSpeakerTitle
09/23/2016Astro SeminarAshley ZaudererObservational Signatures of Tidal Disruption Events: Are Jets and Radio Emission Ubiquitous? [ + Description ]
09/30/2016Astro SeminarZoltan HaimanRapid Formation of the First Supermassive Black Holes [ + Description ]
10/07/2016Astro SeminarPeter GarnavichThe Earliest Hours of Supernovae with Kepler/K2 [ + Description ]
10/21/2016Astro SeminarRachel SommervilleThe impact of AGN driven winds on galaxy quenching, morphology, and structure [ + Description ]
11/04/2016Astro SeminarAdrian LiuThe Past, Present, and Future of 21cm Cosmology [ + Description ]
11/11/2016Astro SeminarPieter van DokkumExploring the low surface brightness sky with the Dragonfly Telephoto Array [ + Description ]
11/18/2016Astro SeminarJo BovyStellar streams and fundamental physics [ -- Description ]

Description: 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 show some examples of this machinery in fitting observed streams and what it tells us about the shape of the Milky Way’s halo. 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. (2:00 PM, Meyer 5th Fl. CCPP Lounge)
12/02/2016Astro SeminarSjoert van VelzenNew ways to study the tidal disruption of stars by supermassive black holes [ + Description ]
01/23/2017Astro SeminarMaryam ModjazStellar Forensics with the Most Powerful Explosions in the Universe [ + Description ]
01/27/2017Big Apple ColloquiumHiranya PeirisTowards Fundamental Physics from the Cosmic Microwave Background [ + Description ]
02/03/2017Astro SeminarPhilipp MoestaModeling the most powerful explosions in 3D [ + Description ]
02/10/2017Astro SeminarBenoit CotéConnecting Nuclear Astrophysics to Cosmological Structure Formation with Galactic Chemical Evolution [ + Description ]
02/17/2017Astro SeminarOr GraurRage against the dying of the light: what can we learn from three-year-old supernovae? [ + Description ]
03/10/2017Astro SeminarAna BonacaThe Milky Way halo in the Gaia era [ + Description ]
03/17/2017Astro Seminarn/ano astro seminar -- Spring Break [ + Description ]
03/24/2017Astro Seminarn/ano astro seminar -- prospective graduate student day [ + Description ]
03/31/2017Astro SeminarEmanuele CastorinaCosmology with Neutral Hydrogen [ + Description ]
04/07/2017Astro SeminarColin HillNew Information in Ancient Photons: Novel Approaches to CMB Secondary Anisotropies [ + Description ]
04/14/2017Astro SeminarRuth AngusUnlocking stellar ages with Gaia: prospects for galactic archaeology and exoplanet populations [ + Description ]
04/21/2017Astro SeminarEliot QuataertThe Surprisingly Dynamic Last Years in the Lives of Massive Stars [ + Description ]
04/28/2017Astro SeminarAndy HowellA new window into supernovae and their progenitors with Las Cumbres Observatory [ + Description ]
05/19/2017Astro SeminarAbigail PolinModeling Sub-Chandrasekhar Mass White Dwarf Explosions [ + Description ]