2015 JSI Mini-Symposia

2014 JSI Mini-Symposia

2013 JSI Mini-Symposia

2012 JSI Mini-Symposia

2011 JSI Mini-Symposia

 


JSI Seminars

Wednesday, February 16, 2011, 2:45 pm - 3:45 pm, Room 1201 Physics Building

Speaker:Neal Dalal (CITA, University of Toronto)

Title:"The Handwaver's Guide to Dark Matter Halos"

Abstract: Dark matter halos are the endpoints of cosmological structure formation. They play a crucial role in many areas of astrophysics and cosmology, and are host to most of the `interesting' objects that we see around us, like galaxies and quasars. Our understanding of halos is based almost entirely on numerical experiments in N-body simulations, with relatively poor theoretical understanding of what determines halo properties. In my talk, I will try to give a simple way to understand many properties of halos, including their internal structure and their abundance. I will show how this approach opens new avenues for exploring our cosmology, with a focus on physics beyond the standard (cosmological) model.

 


Wednesday, February 9, 2011, 3 pm - 4 pm, Room 4102 Physics Building

Speaker:Jonathan McKinney (Stanford University)

Title:"Observing Black Holes"

Abstract: Black hole accretion systems are among the most powerful phenomena in the Universe and are excellent laboratories for probing and testing general relativity. I discuss how such systems work, and I show how black hole spins can be measured using photon spectra from black hole x-ray binaries. Such measurements are then shown to be reliable by using three-dimensional general relativistic magnetohydrodynamical simulations. I also use black hole accretion simulations to reveal how relativistic jets are launched and remain stable despite well-known magnetic kink instabilities. Such jet simulations show how observations of jets from active galactic nuclei implicate the cosmological evolution of black hole spin.


 

JSI organizes workshops in the areas of cosmology, black holes, and compact object research, and also hosts internal monthly meetings to foster collaboration amongst JSI fellows.

JSI Workshop - There will be a JSI workshop, "The Ins and Outs of Black Holes", November 15-17, 2010 in Annapolis, Maryland.

 

Past Workshops

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Advances in Theoretical and Observational Cosmology Workshop
May 26-28, 2010

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Matter and Electromagnetic Fields in Strong Gravity
August 24-28, 2009

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Shedding Light on Dark Matter
April 2-4, 2009