IAR 05382
INSTITUTO ARGENTINO DE RADIOASTRONOMIA
Unidad Ejecutora - UE
congresos y reuniones científicas
Título:
Observational properties of magnetized accretion disks and cosmic censorship
Autor/es:
IGNACIO F. RANEA-SANDOVAL; FEDERICO GARCÍA; TIM JOHANNSEN
Lugar:
La Plata
Reunión:
Congreso; HEPRO V: 5th High Energy Phenomena in Relativistic Outflows; 2015
Institución organizadora:
Grupo de Astrofísica Relativista y Radioastronomía (GARRA)
Resumen:
In general relativity, black holes are uniquely described by the Kerrmetric and, according to the cosmic censorship conjecture, curvature singularities are always hidden behind an event horizon. We study the effect of an external magnetic eld on the observed light curves of orbiting hot spots in thin accretion disks in Kerr spacetimes with (black holes) and without (super-extreme solutions) horizons. We employ a ray-tracing algorithm to calculate the light curves and power spectra of such hot spots for uniform and dipolar magnetic field congurations and show that the presence of a dipolar magnetic field produces potentially observable signatures which might be useful to probe the nature of compact objects and to test the cosmic censorship conjecture.
