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 ]
12/02/2016Astro SeminarSjoert van VelzenNew ways to study the tidal disruption of stars by supermassive black holes [ -- Description ]

Description: When perturbations to a star's orbit bring it within a few tens of Schwarzschild radii of a supermassive black hole, the star will be torn apart by tidal forces. This tidal disruption injects a large amount of gas close to the black hole horizon and the resulting flare of thermal emission can be detected in optical and X-ray surveys. Tidal disruption flares (TDFs) could potentially be used to measure the mass of quiescent black holes in galactic nuclei and can also probe black hole spin. Over the last decade, a few dozen TDFs have been discovered, but our understanding of these events is far from complete. Many fundamental properties, such as the origin of the observed optical emission or the production of relativistic TDF jets, are poorly understood. In this talk, I will present two recent (and unexpected) discoveries that provide a completely new way to study TDFs: reprocessed emission from hot dust and short-lived radio flares. (2:00 PM, Meyer 5th Fl. CCPP Lounge)
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 ]
04/21/2017Astro SeminarEliot Quataert [ + Description ]
04/28/2017Astro SeminarAndy Howel [ + Description ]
05/05/2017Astro SeminarTjitske StarkenburgTBA [ + Description ]