The galaxy density environment of gamma-ray burst host galaxies

Abstract

We analyze cross-correlation functions between Gamma-Ray Burst (GRB) hosts and surrounding galaxies. We have used data obtained with the Very Large Telescope at Cerro Paranal (Chile), as well as public Hubble Space Telescope data. Our results indicate that Gamma-Ray Burst host galaxies do not reside in high galaxy density environments. Moreover, the host-galaxy cross-correlations show a relatively low amplitude. Our results are in agreement with the cross-correlation function between star-forming galaxies and surrounding objects in the HDF-N.

arXiv comment6 figures, accepted for publication in ApJ

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• The Galaxy Hosts and Large-Scale Environments of Short-Hard Gamma-Ray Bursts
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• The GRB 030329 host: a blue low metallicity subluminous galaxy with intense star formation
• The metallicity properties of simulated long-GRB galaxy hosts and the Fundamental Metallicity Relation
• Properties of Long Gamma-Ray Burst Host Galaxies in Cosmological Simulation
• The galaxies in the field of the nearby GRB980425/SN1998bw
• Host galaxies of long gamma-ray bursts in the Millennium Simulation
• Testing the gravitational lensing explanation for the MgII problem in GRBs
• Long Gamma-Ray Burst Host Galaxies and their Environments
• Clustering of galaxies around GRB sight-lines