Now showing items 1-10 of 191
Supermassive black hole binaries at high energies
(World Scientific, 2014-03)
An accretion disk around a supermassive black hole may be strongly perturbed by the presence of a secondary black hole. Recent simulations have shown that, under certain conditions, the tidal torques exerted by the secondary ...
Fast radio bursts and their gamma-ray or radio afterglows as Kerr-Newman black hole binaries
(IOP Publishing, 2016-07)
Fast radio bursts (FRBs) are radio transients lasting only about a few milliseconds. They seem to occur at cosmological distances. We propose that these events can originate in the collapse of the magnetospheres of Kerr-Newman ...
Gap formation and its consequence in the evolution of SMBHs binaries in galaxy mergers
(Wiley & Sons, 2015)
Motivated by the theoretical and observational evidence that after a major merger of gas-rich galaxies a massive gaseous disk with a SMBH binary will be formed in the nuclear region of the remnant, we study the interaction ...
Testing the binary black hole paradigm through the Fe K alfha line profile : application to 3C 273
(IOP Publishing, 2003-12)
We propose the study of long-term variations in the Fe Ka line profile as a discriminator for binary black hole (BH) systems. The existence of a binary BH in the center of an active galaxy will produce a particular signature ...
Measuring the Spin of Black Holes in Binary Systems Using Gravitational Waves
(Amer Physical Soc, 2014-06-25)
Compact binary coalescences are the most promising sources of gravitational waves (GWs) for ground-based detectors. Binary systems containing one or two spinning black holes are particularly interesting due to spin-orbit ...
Binary-disk interaction. ii. Gap-opening criteria for unequal-mass binaries
(The American Astronomical Society, 2014)
We study the interaction of an unequal-mass binary with an isothermal circumbinary disk, motivated by the theoretical and observational evidence that after a major merger of gas-rich galaxies, a massive gaseous disk with a ...