NS5 - Highly magnetized neutron stars: theories, observations and connection with gamma-ray bursts |
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Speaker |
Bernardini, Maria Grazia |
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| Talk Title |
Gamma-Ray Bursts And Magnetars: Observational Signatures And Predictions |
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Abstract |
Newly-born millisecond magnetars are competing with black holes as source of the gamma-ray burst (GRB) power, mainly with their rotational energy reservoir. In ten years of activity, Swift has provided compelling observational evidences supporting the magnetar central engine, as the presence of a plateau phase in the X-ray light curve and the precursor and flaring activity. We review the major observational evidences for the possible presence of a newly-born magnetar as the central engine for long GRBs. We then discuss about the possibility that all GRBs are powered by magnetars, and we propose a unification scheme that accommodates both magnetars and black holes, connected to the different properties and energetics of GRBs. |
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