Evolution of relativistic binary systems

Mar 24, 2014, 5:30 PM
15m

Speaker

Jorge Horvath (I)

Description

We present a general picture for the evolution of relativistic binary systems, including those recycling NSs to millisecond periods, and those ending in “redbacks” and “black widow” systems . The theoretical framework includes all physical effects though to be relevant for the description of mass transfer $\dot{M}$ namely accretion, evaporation of matter by pulsar irradiation and X-rays irradiation feedback. We follow evolutionary tracks and show that the interplay of $\dot{M}$ and orbital evolution, calculated with a fully implicit code, is capable of explaining the whole variety of observed binary systems. In particular, we show that “redback” systems are just a transitory (but very long) stage driven by an oscillatory mass transfer. Finally, we demonstrate that very high masses $\geq 2 M_{\odot}$ are a natural outcome and match the observed values reported recently for the NS in these systems.

Primary author

Co-authors

Dr M.A. De Vito (FCAGLP/UNLP) Prof. Omar Benvenuto (FCAGLP/UNLP)

Presentation materials