Volume 457, Number 3, October III 2006
|Page(s)||857 - 864|
|Published online||12 September 2006|
The GRB 060218/SN 2006aj event in the context of other gamma-ray burst supernovae
Thüringer Landessternwarte Tautenburg, 07778 Tautenburg, Germany e-mail: email@example.com
2 Istituto Nazionale di Astrofisica-OATs, 34131 Trieste, Italy
3 INAF, Istituto di Astrofisica Spaziale e Fisica Cosmica, Sez. di Bologna, 40129 Bologna, Italy
4 Clemson University, Department of Physics and Astronomy, Clemson, SC 29634-0978, USA
5 Dark Cosmology Center, Niels Bohr Institute, Copenhagen University, 2100 Copenhagen, Denmark
6 National Astronomical Observatories, CAS, Chaoyang District, Beijing 100012, PR China
7 Department of Astronomy, University of California, Berkeley, CA 94720-3411, USA
8 Max-Planck-Institut für extraterrestische Physik, 85741 Garching, Germany
9 Centre for Astrophysics Research, University of Hertfordshire, College Lane, Hatfield, AL10 9AB, UK
10 Max-Planck Institut für Astrophysik, 85748 Garching, Germany
11 Department of Physics and Astronomy, University of Leicester, Leicester, LE1 7RH, UK
12 Astrophysics Research Institute, Liverpool John Moores University, Twelve Quays House, Birkenhead, CH41 1LD, UK
Accepted: 13 July 2006
The supernova SN 2006aj associated with GRB 060218 is the second-closest GRB-SN observed to date (). 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.
Key words: gamma rays: bursts: X-rays: individuals: GRB 060218 / supernovae: individual: SN 2006aj
© ESO, 2006
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