Prof. Paul O’Brien

University of Leicester

v ponedeljek, 24. marca 2014, ob 13h v F4

Long duration GRBs are thought to arise from the core-collapse of a rapidly-rotating massive star while short-duration GRBs are thought to originate from the merger of compact binary systems. I will summarise recent multi-wavelength observations of short GRBs which have complex light curves which are hard to explain with black holes. An alternative central engine is a magnetar, a massive, rapidly-rotating, highly magnetised neutron star. While consistent with the data, the existence of magnetars and the large derived magnetic fields could pose a major problem for merger models. Future gravitational wave observations may allow us to distinguish between black hole and magnetar models. I will also discuss the current status of GRB finders and the options for future space-based, high-energy missions to monitor the transient universe.