ar X iv : a st ro - p h / 06 10 41 7 v 1 1 3 O ct 2 00 6 Optical observations of GRB 060218 / SN 2006 aj and its host galaxy

ar X iv : a st ro - p h / 06 03 83 2 v 4 3 0 M ay 2 00 6 SN 2006 aj and the nature of low - luminosity gamma - ray bursts

We present SMARTS consortium optical/IR light curves of SN 2006aj associated with GRB 060218. We find that this event is broadly similar to two previously observed events SN 1998bw/GRB 980425 and SN 2003lw/GRB 031203. In particular, all of these events are greatly under-luminous in gamma-rays compared to typical long-duration GRBs. We find that the observation by Swift of even one such event im...

ar X iv : a st ro - p h / 06 10 94 5 v 1 3 1 O ct 2 00 6 First results of galactic observations with MAGIC

During its first cycle, the MAGIC (Major Atmospheric Gamma-ray Imaging Cherenkov) telescope was performing an observational campaign covering a total of about 250 hours on galactic sources. Here we review the results for the very high energy (> 100 GeV) γ-ray emission from some of those sources.

ar X iv : a st ro - p h / 06 04 01 6 v 5 2 7 Ju l 2 00 6 The Interpretation and Implication of the Afterglow of GRB 060218

The nearby GRB 060216/SN 2006aj was an extremely long, weak and very soft GRB. It was peculiar in many aspects. We show here that the X-ray, ultraviolet/optical and radio afterglow of GRB 060218 have to be attributed to different physical processes arising from different emission regions. From the several components in this burst’s afterglow only the radio afterglow can be interpreted in terms ...

ar X iv : a st ro - p h / 06 10 24 6 v 1 9 O ct 2 00 6 Special Features of Galactic Dynamics

ar X iv : a st ro - p h / 06 03 49 5 v 1 2 0 M ar 2 00 6 Supernova 2006 aj and the associated X - Ray Flash

We present optical lightcurves and spectra of the afterglow of the gamma-ray burst (GRB) of February 18, 2006. GRB060218 is a nearby long GRB which is clearly associated with a supernova – dubbed SN2006aj. Our optical lightcurves define the rise times, the lightcurve shapes and the absolute magnitudes in the U , V and R bands, and we compare these data with data for other relevant supernovae. S...