Image Details
Caption: Figure 20.
Magnetar initial spin period and magnetic field contours (in units of 1014 G) from Kasen & Bildsten (2010); assuming an explosion energy of 1051 erg and an opacity κ = 0.2 cm2 gr−1) for an ejecta mass of 5M⊙ (top) and 2M⊙ (bottom). The magnetar models can reproduce the rise time and peak luminosity of our events only with extremely rapid initial spin periods and low ejecta masses.
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