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arxiv: astro-ph/0605058 · v3 · submitted 2006-05-02 · 🌌 astro-ph

The GRB 060218/SN 2006aj event in the context of other Gamma-Ray Burst Supernovae

P. Ferrero , D. A. Kann , A. Zeh , S. Klose , E. Pian , E. Palazzi , N. Masetti , D. H. Hartmann
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J. Sollerman J. Deng A. V. Filippenko J. Greiner M. A. Hughes P. Mazzali W. Li E. Rol R. J. Smith N. R. Tanvir
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classification 🌌 astro-ph
keywords contextsupernovatelescopegrb-snlightsamplesupernovaeadditional
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The supernova SN 2006aj associated with GRB 060218 is the second-closest GRB-SN observed to date (z=0.033). We present Very Large Telescope, Liverpool Telescope, and Katzman Automatic Imaging Telescope multi-color photometry of SN 2006aj. This supernova is found to be subluminous and rapidly evolving. Its early light curve includes an additional wavelength-dependent component, which can be interpreted as shock break-out. We compare the photometric evolution of multi-band light curves with the corresponding properties of the present sample of more than 10 GRB-SNe with precisely known redshifts. Using host-galaxy extinction measurements, we derive extinction-corrected GRB-SN luminosities and place SN 2006aj in the context of this GRB-selected supernova sample as well as in the context of local stripped-envelope supernovae.

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