A Thousand Days After the Merger: Continued X-ray Emission from GW170817

Recent observations with the Chandra X-ray telescope continue to detect X-ray emission from the transient GW170817. In a total exposure of 96.6 ks, performed between 2020 March 9 and 16 (935–942 d after the merger), a total of 8 photons are measured at the source position, corresponding to a signifi...

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Veröffentlicht in:Monthly notices of the Royal Astronomical Society 2020-10, Vol.498 (4), p.5643-5651
Hauptverfasser: Troja, E., Eerten, H. van, Zhang, B., Ryan, G., Piro, L., Ricci, R., O’Connor, B., Wieringa, M.H., Cenko, S. B., Sakamoto, T.
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Sprache:eng
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Zusammenfassung:Recent observations with the Chandra X-ray telescope continue to detect X-ray emission from the transient GW170817. In a total exposure of 96.6 ks, performed between 2020 March 9 and 16 (935–942 d after the merger), a total of 8 photons are measured at the source position, corresponding to a significance of ≈5σ. Radio monitoring with the Australian Telescope Compact Array (ATCA) shows instead that the source has faded below our detection threshold (
ISSN:0035-8711
1365-2966
DOI:10.1093/mnras/staa2626