NS5 - Highly magnetized neutron stars: theories, observations and connection with gamma-ray bursts |
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Speaker |
Suwa, Yudai |
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Coauthors |
Tominaga, Nozomu |
| Talk Title |
On 56Ni synthesis by the magnetar model for long gamma-ray bursts and hypernovae |
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Abstract |
A rapidly rotating neutron star with strong magnetic fields, called a magnetar, is a possible candidate for the central engine of long gamma-ray bursts and hypernovae (HNe). We solve the evolution of a shock wave driven by the wind from a magnetar and we evaluate the temperature evolution, by which we estimate the amount of 56Ni that produces the bright emission of HNe. We obtain a constraint on the magnetar parameters (i.e. the poloidal magnetic field strength Bp and initial angular velocity Omega_i) for synthesizing enough 56Ni mass to explain HNe. |
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