2015 JSI Mini-Symposia
2014 JSI Mini-Symposia
- "New JSI Scientists Jamoboree" (October 3rd @ UMD)
- "Neutron Stars as Physics Labs: Future Opportunities with NICER" (March 27th @ NASA/GSFC Visitor's Center)
2013 JSI Mini-Symposia
- "JSI Scientists Jamboree" (November 15th @ UMD)
- "A Nearby Ordinary Monster -- An Afternoon to Discuss GRB130427A" (July 17th @ UMD)
- "Multi-Messenger Time Domain" (May 31st @ NASA/GSFC)
2012 JSI Mini-Symposia
- "JSI Scientists Jamboree" (October 5th @ UMD)
- "Electromagnetic Counterparts to Gravitational Wave Sources" (May 11th @ NASA/GSFC)
- "Plasma Physics and Particle Acceleration" (April 6th @ UMD)
- "Accretion Astrophysics" (February 17th @ UMD)
2011 JSI Mini-Symposia
- "Accretion Physics and Particle Acceleration" (November 4th @ NASA/GSFC)
- "JSI Scientists Overview" (September 16th @ UMD)
- "Emerging from the Dark Ages" (April 8th @ NASA/GSFC)
- "Milli-second Pulsars" (February 25th @ UMD)
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.
Advances in Theoretical and Observational Cosmology Workshop
Matter and Electromagnetic Fields in Strong Gravity
Shedding Light on Dark Matter