Quark deconfinement in the proto-magnetar model of long gamma-ray bursts
Abstract
We investigate the possible implications of quark deconfinement on the phenomenology of long gamma-ray bursts focusing, in particular, on the possibility to describe multiple prompt emission phases in the context of the proto-magnetar model. Starting from numerical models of rotating Hadron Stars and Quark Stars in full general relativity we track the electromagnetic spin-down evolution in both the hadronic and quark phase, linking the two families through conservation of baryon number and angular momentum. We give estimates of the time-scales and the energetics involved in the spin-down process deriving, in the relevant spin range, the relation between the initial and the final masses and rotational energies, whenever hadron-quark conversion is possible. We show how the results can be used in relevant astrophysical cases such as the double burst GRB 110709B.
- Publication:
-
Monthly Notices of the Royal Astronomical Society
- Pub Date:
- October 2016
- DOI:
- 10.1093/mnrasl/slw115
- arXiv:
- arXiv:1606.02075
- Bibcode:
- 2016MNRAS.462L..26P
- Keywords:
-
- dense matter;
- gravitation;
- gamma-ray burst: general;
- stars: magnetars;
- stars: neutron;
- Astrophysics - High Energy Astrophysical Phenomena;
- High Energy Physics - Phenomenology;
- Nuclear Theory
- E-Print:
- 5 pages, 3 figures, 2 tables