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http://hdl.handle.net/20.500.12386/27085
Titolo: | A luminous blue kilonova and an off-axis jet from a compact binary merger at z = 0.1341 | Autori: | Troja, E. Ryan, G. PIRO, LUIGI van Eerten, H. Cenko, S. B. Yoon, Y. Lee, S.-K. Im, M. Sakamoto, T. Gatkine, P. Kutyrev, A. Veilleux, S. |
Data pubblicazione: | 2018 | Rivista: | NATURE COMMUNICATIONS | Numero: | 9 | Fascicolo: | 1 | Da pagina:: | 4089 | Abstract: | The recent discovery of a gamma-ray burst (GRB) coincident with the gravitational-wave (GW) event GW170817 revealed the existence of a population of low-luminosity short duration gamma-ray transients produced by neutron star mergers in the nearby Universe. These events could be routinely detected by existing gamma-ray monitors, yet previous observations failed to identify them without the aid of GW triggers. Here we show that GRB150101B is an analogue of GRB170817A located at a cosmological distance. GRB150101B is a faint short burst characterized by a bright optical counterpart and a long-lived X-ray afterglow. These properties are unusual for standard short GRBs and are instead consistent with an explosion viewed off-axis: the optical light is produced by a luminous kilonova, while the observed X-rays trace the GRB afterglow viewed at an angle of 13°. Our findings suggest that these properties could be common among future electromagnetic counterparts of GW sources. | URI: | http://hdl.handle.net/20.500.12386/27085 | URL: | https://www.nature.com/articles/s41467-018-06558-7 | ISSN: | 2041-1723 | DOI: | 10.1038/s41467-018-06558-7 | Bibcode ADS: | 2018NatCo...9.4089T | Fulltext: | open |
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