2015MNRAS.451..282S

Query : 2015MNRAS.451..282S

2015MNRAS.451..282S - Mon. Not. R. Astron. Soc., 451, 282-287 (2015/July-3)

How much can 56Ni be synthesized by the magnetar model for long gamma-ray bursts and hypernovae?

SUWA Y. and TOMINAGA N.

Abstract (from CDS):

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 Ωi) for synthesizing enough 56Ni mass to explain HNe (M_^56Ni\gtrsim 0.2 M_☉), that is, (Bp/1016G)1/2(Ωi/104rad/s) ≳ 0.7.

Abstract Copyright: © 2015 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society (2015)

Journal keyword(s): gamma-ray burst: general - stars: magnetars - supernovae: general - stars: winds, outflows

Simbad objects: 3

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Number of rows : 3
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 SN 1987A SN* 05 35 27.98840 -69 16 11.1134           SNIIpec 5203 2
2 SN 2003dh SN* 10 44 50.030 +21 31 18.15     16.2     SNIcpec 1261 1
3 SN 1998bw SN* 19 35 03.17 -52 50 46.1   14.09       SNIc 1928 2

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