Valencia from 20 to 22 March 2013
3rd Iberian Gravitational-Wave Meeting 2013

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General programme, activity sheet

Thursday 21 March, 2013 12:00 to 12:30 Conference
Magnetized Accretion onto Inspiraling Binary Black Holes.
Speaker: Bruno Mundim, AEI, Postdoc

Authors: S. Noble, Bruno C. Mundim, H. Nakano, M. Campanelli, Y. Zlochower, J. Krolik, N. Yunes

Fully general relativistic numerical solutions to magnetized accretion onto black hole binaries are computationally very expensive. Current efforts are limited to very short binary separations. On the other extreme, however, point-particle Newtonian mechanics is used to accurately model accretion onto binaries with very large separations. In order to bridge the gap between these two extreme regimes, we construct a global time-dependent analytic approximation to the binary spacetime metric by asymptotically matching analytic metric approximations with different regions of validity. We apply black hole perturbation theory in the inner zone; 2.5 post-Newtonian theory in the near zone; and post-Minkowskian theory consistent with post-Newtonian theory in the far zone. In addition, we employ 3.5 post-Newtonian equations of motion to accurately describe the binary dynamics in its inspiral phase. We find the spacetime to be accurate to the expected leading post-Newtonian order, and demonstrate its reasonably small violations of the Hamiltonian and momentum constraints. With our PN gravity model, we evolve a magnetized disk using a modern general relativistic magnetohydrodynamics code. We show that many aspects of the disk follow the binary inward as its separation diminishes up until when the binary shrinkage timescale becomes smaller than the inflow timescale at the inner edge of the disk. We also present predictions for the bolometric luminosity using our radiative cooling function as a proxy for emissivity.
Morning Sessions
Place: Salon Grados

Other activities in Morning Sessions
10:00 h. to 11:00 h.Conference

Using numerical relativity to explore fundamental physics and astrophysics

Speaker: Luciano Rezzolla, Albert Einstein Institute
11:30 h. to 12:00 h.Conference

Binary Black Hole Gravitational Waves: Simple or Complex?

Speaker: Deirdre Shoemaker, Georgia Institute of Technology, Associate Professor
11:00 h. to 11:30 h.Coffee break

09:00 h. to 12:00 h.Conference

Modelling Gravitational Waves from Black Hole Binaries

Speaker: Sascha Husa, A
12:30 h. to 13:00 h.Conference

Models of Black-Hole Accretion Tori as Remnants of Neutron-Star Mergers

Speaker: Oliver Just, Max-Planck Institute Astrophysics

Organizers, sponsors, collaborators


ADEIT Fundació Universitat Empresa

Plaza Virgen de la Paz, 3 · E-46001 Valencia
Phone: +34 96 160 3000