SIMBAD references

2012MNRAS.425L..15S - Mon. Not. R. Astron. Soc., 425, L15-L18 (2012/September-1)

Understanding the low magnetic field magnetar, Sgr 0418+5279, from a magnetized core model.


Abstract (from CDS):

We consider the newly found low magnetic field magnetar, SGR 0418+5279, which exhibits flares, in the context of a model recently proposed by us in which magnetars owe their strong magnetic fields to a high baryon density, magnetized core. We calculate the characteristic core size which will give rise to a surface polar field of about 1013 G, observed for this magnetar. We then estimate the time of transport of the magnetic field to the crust by ambipolar diffusion, and find this time to be roughly consistent with the spin-down age of SGR 0418+5279. Our model suggests that a precise post-flare timing analysis for this magnetar would show a persistent increase in the spin-down rate of {dot}nu, as observed, for example, in PSR 1846-0258, and in due course a decrease in the braking index, consistent with a post-flare increase in the surface field. A peculiar galaxy appears at redshift 11: properties of a moderate-redshift interloper

Abstract Copyright: 2012 The Author Monthly Notices of the Royal Astronomical Society2012 RAS

Journal keyword(s): stars: magnetars

CDS comments: SGR 0418+5279 is a misprint for SGR 0418+5729.

Simbad objects: 3

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