Gravitational wave background from sub-luminous GRBs: prospects for second and third generation detectors

Understand

We assess the detection prospects of a gravitational wave background associated with sub-luminous gamma-ray bursts (SL-GRBs).

• We assume that the central engines of a significant proportion of these bursts are provided by newly born magnetars and consider two plausible GW emission mechanisms.
• Firstly, the deformation-induced triaxial GW emission from a newly born magnetar.
• Secondly, the onset of a secular bar-mode instability, associated with the long lived plateau observed in the X-ray afterglows of many gamma-ray bursts (Corsi & Meszaros 2009a).