Millisecond proto-magnetars and gamma ray bursts

Thompson, T. A. (2005) Millisecond proto-magnetars and gamma ray bursts. Il nuovo cimento C, 28 (4\5). pp. 583-588. ISSN 1826-9885

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In the seconds after core collapse and explosion, a thermal drivenneutrino wind emerges from the cooling, deleptonizing newly-born neutron star. If the neutron star has a large-scale magnetar-strength surface magnetic field and millisecond rotation period, then the wind is driven primarily by magneto-centrifugal slinging, and only secondarily by neutrino interactions. The strong magnetic field forces the wind to corotate with the stellar surface and the neutron star’s rotational energy is efficiently extracted. As the neutron star cools, and the wind becomes increasingly magnetically-dominated, the outflow becomes relativistic. Here I review the millisecond magnetar model for long-duration gamma ray bursts and explore some of the basic physics of neutrino-magnetocentrifugal winds. I further speculate on some issues of collimation and geometry in the millisecond magnetar model.

Item Type: Article
Additional Information: Paper presented at the “4th Workshop on Gamma-Ray Burst in the Afterglow Era”, Rome, October 18-22, 2004.
Uncontrolled Keywords: Supernovae ; Neutron stars ; γ-ray sources; γ-ray bursts ; Mass loss and stellar winds
Subjects: 500 Scienze naturali e Matematica > 520 Astronomia e scienze connesse
Depositing User: Marina Spanti
Date Deposited: 16 Mar 2020 17:33
Last Modified: 16 Mar 2020 17:33

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