The GRB 060218/SN 2006aj event in the context of other gamma-ray burst supernovae
Abstract
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.
- Publication:
-
Astronomy and Astrophysics
- Pub Date:
- October 2006
- DOI:
- 10.1051/0004-6361:20065530
- arXiv:
- arXiv:astro-ph/0605058
- Bibcode:
- 2006A&A...457..857F
- Keywords:
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- gamma rays: bursts: X-rays: individuals: GRB 060218;
- supernovae: individual: SN 2006aj;
- Astrophysics
- E-Print:
- accepted for publication in A&