Precession and Jitter in FRB 180916B
J. I. Katz
Abstract
ABSTRACT Recent CHIME/FRB observations of the periodic repeating fast radio bursts (FRB) 180916B have produced a homogeneous sample of 44 bursts. These permit a redetermination of the modulation period and phase window, in agreement with earlier results. If the periodicity results from the precession of an accretion disc, in analogy with those of Her X-1, SS 433, and many other superorbital periods, the width of the observable phase window indicates that the disc axis jitters by an angle of about 0.14 of the inclination angle, similar to the ratio of 0.14 in the well-observed jittering jet source SS 433.
Topics & Concepts
PhysicsAstrophysicsPrecessionJitterPhase (matter)HomogeneousObservableAccretion discJet (fluid)Window (computing)Accretion (finance)AstronomyMechanicsOperating systemThermodynamicsComputer scienceElectronic engineeringQuantum mechanicsEngineeringAstrophysical Phenomena and ObservationsGamma-ray bursts and supernovaePulsars and Gravitational Waves Research