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http://hdl.handle.net/20.500.12386/31983
Title: | Searching for the radio remnants of short duration gamma-ray bursts | Authors: | RICCI, ROBERTO Eleonora Troja Bruni, Gabriele Tatsuya Matsumoto PIRO, LUIGI Brendan O'Connor Tsvi Piran Niloofar Navaieelavasani Alessandra Corsi Bruno Giacomazzo Mark H. Wieringa |
Issue Date: | 2021 | Journal: | MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | Number: | 500 | Issue: | 2 | First Page: | 1708 | Abstract: | Neutron star mergers produce a substantial amount of fast-moving ejecta, expanding outwardly for years after the merger. The interaction of these ejecta with the surrounding medium may produce a weak isotropic radio remnant, detectable in relatively nearby events. We use late-time radio observations of short duration gamma-ray bursts (sGRBs) to constrain this model. Two samples of events were studied: four sGRBs that are possibly in the local (<200 Mpc) universe were selected to constrain the remnant non-thermal emission from the sub-relativistic ejecta, whereas 17 sGRBs at cosmological distances were used to constrain the presence of a proto-magnetar central engine, possibly re-energezing the merger ejecta. We consider the case of GRB~170817A/GW170817, and find that in this case the early radio emission may be quenched by the jet blast-wave. In all cases, for ejecta mass range of M_ej \lesssim 10^{-2} (5 * 10^{-2}) M_sun, we can rule out very energetic merger ejecta E_ej \gtrsim 5 * 10^{52}(10^{53}) erg, thus excluding the presence of a powerful magnetar as a merger remnant. | URI: | http://hdl.handle.net/20.500.12386/31983 | URL: | http://arxiv.org/abs/2008.03659v2 https://academic.oup.com/mnras/article/500/2/1708/5936666?login=true |
ISSN: | 0035-8711 | DOI: | 10.1093/mnras/staa3241 | Fulltext: | open |
Appears in Collections: | 1.01 Articoli in rivista |
Files in This Item:
File | Description | Size | Format | |
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2008.03659.pdf | postprint | 3.76 MB | Adobe PDF | View/Open |
staa3241.pdf | Pdf editoriale | 2.49 MB | Adobe PDF | View/Open |
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