The GRB 060218/SN 2006aj event in the context of other gamma-ray burst supernovae
journal contributionposted on 24.10.2012, 09:07 by P. Ferrero, D. A. Kann, A. Zeh, S. Klose, E. Pian, E. Palazzi, N. Masetti, D. H. Hartmann, J. Sollerman, J. Deng, A. V. Filippenko, J. Greiner, M. A. Hughes, P. Mazzali, W. Li, E. Rol, R. J. Smith, N. R. Tanvir
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.