Astronomy and Astrophysics – Astrophysics
Scientific paper
2005-11-29
Mon.Not.Roy.Astron.Soc.Lett.368:L20-L24,2006
Astronomy and Astrophysics
Astrophysics
5 pages, 5 figures, accepted for publication in MNRAS
Scientific paper
10.1111/j.1745-3933.2006.00147.x
We cross correlate Gamma--Ray Bursts and X--Ray selected clusters of galaxies at z\leq0.45. We find a positive 2\sigma signal for the angular cross--correlation function w_{bc}(\theta) on scales \theta\leq 3 deg between short GRBs and clusters. Conversely, no correlation is found between clusters and the population of long GRBs. The comparison with the cluster autocorrelation function shows that short GRBs do not trace the cluster distribution as not all short GRBs are found in clusters. A higher signal in w_{bc}(\theta) is found if we only consider the cluster population up to z=0.1. By comparing the short burst autocorrelation function with model predictions we then constrain short bursts to mostly originate within \sim 270 Mpc (i.e. z\leq 0.06). Our analysis also reveals that short GRBs are better correlated with ``normal'' galaxies. The double compact object merger model for short GRBs would associate them preferentially to early--type galaxies but the present statistics do not allow us to exclude that at least a fraction of these events might also take place in late--type galaxies, in agreement with recent evidences.
Ghirlanda Giancarlo
Ghisellini Gabriele
Guzzo Luigi
Magliocchetti Manuela
No associations
LandOfFree
On the correlation of Short Gamma--Ray Bursts and Clusters of galaxies does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with On the correlation of Short Gamma--Ray Bursts and Clusters of galaxies, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and On the correlation of Short Gamma--Ray Bursts and Clusters of galaxies will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-715402