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The Host Galaxies of Short GRBs as Probes of Their Progenitor Properties

Department of Astronomy and Space Sciences, Faculty of Science, Istanbul University, 34119 Istanbul, Turkey
Galaxies 2019, 7(1), 30;
Received: 30 November 2018 / Revised: 11 January 2019 / Accepted: 22 January 2019 / Published: 7 February 2019
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We present and discuss the properties of host galaxies of short Gamma-ray Burst (SGRBs). In particular, we examine those observations that contribute to the understanding of the progenitor systems of these explosions. Most SGRB hosts are found to be star forming objects, but an important fraction, ∼1/5, of all hosts are elliptical with negligible star formation. Short bursts often occur at very large off-sets from their hosts, in regions where there is little or no underlying host light. Such results have enabled the community to test and improve the models for the production of short GRBs. In particular, the data are in favour of the merger of compact object binaries, provided that the kick velocities from the birth site are a few tens of km/s, and merger times of ∼1 Gyr. View Full-Text
Keywords: short GRBs; galaxies; compact object mergers short GRBs; galaxies; compact object mergers

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De Pasquale, M. The Host Galaxies of Short GRBs as Probes of Their Progenitor Properties. Galaxies 2019, 7, 30.

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