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arXiv · 1003.5052

No Enough Evidence In Support Of Correlation Between Gamma-ray Bursts And Foreground Galaxiy Clusters In the Swift Era

J. Wang·J. Y. Wei
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Abstract

The correlation between distant Gamma-Ray Bursts (GRBs) and foreground galaxy clusters is re-examined by using the well localized (with an accuracy down to a few arcseconds) Swift/XRT GRBs. The galaxy clusters are compiled from both X-ray selected ROSAT brightest cluster sample (BCS) and BCS extension by requiring $\delta \geq0\degr$ and $b\geq20\degr$. The Swift/XRT GRBs fulfilling the above selection criteria are cross-correlated with the clusters. Both Nearest-Neighbor Analysis and angular two-point cross-correlation function show that there is no enough evidence supporting the correlation between the GRBs and foreground clusters. We suggest that the non-correlation is probably related to the GRB number-flux relation slope.

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J. Wang, J. Y. Wei. 2010-03-26. No Enough Evidence In Support Of Correlation Between Gamma-ray Bursts And Foreground Galaxiy Clusters In the Swift Era. https://doi.org/10.1088/1674-4527/10/6/003

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