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Latest results from the monitoring of GW170817

Presentation #440.02 in the session “Multi-messenger SIgnatures of Binary Mergers”.

Published onJan 11, 2021
Latest results from the monitoring of GW170817

Recent observations with the Chandra X-ray telescope continue to detect X-ray emission from the transient GW170817. The observed X-ray flux is higher than earlier predictions, yet still consistent with a simple structured jet model. We discuss possible scenarios that could account for prolonged emission from the merger remnant. The current dataset appears consistent both with energy injection by a long-lived central engine and with the onset of a kilonova afterglow, arising from the interaction of the sub-relativistic merger ejecta with the surrounding medium. Long-term monitoring of this source will be essential to test these different models.

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