Please use this identifier to cite or link to this item:
http://hdl.handle.net/20.500.12386/31985
Title: | Accurate flux calibration of GW170817: is the X-ray counterpart on the rise? | Authors: | E. Troja B. O'Connor G. Ryan PIRO, LUIGI RICCI, ROBERTO B. Zhang T. Piran Bruni, Gabriele S. B. Cenko H. van Eerten |
Issue Date: | 2022 | Journal: | MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | Number: | 510 | Issue: | 2 | First Page: | 1902 | Abstract: | X-ray emission from the gravitational wave transient GW170817 is well described as non-thermal afterglow radiation produced by a structured relativistic jet viewed off-axis. We show that the X-ray counterpart continues to be detected at 3.3 years after the merger. Such long-lasting signal is not a prediction of the earlier jet models characterized by a narrow jet core and a viewing angle of about 20 deg, and is spurring a renewed interest in the origin of the X-ray emission. We present a comprehensive analysis of the X-ray dataset aimed at clarifying existing discrepancies in the literature, and in particular the presence of an X-ray rebrightening at late times. Our analysis does not find evidence for an increase in the X-ray flux, but confirms a growing tension between the observations and the jet model. Further observations at radio and X-ray wavelengths would be critical to break the degeneracy between models. | URI: | http://hdl.handle.net/20.500.12386/31985 | URL: | http://arxiv.org/abs/2104.13378v1 https://academic.oup.com/mnras/article/510/2/1902/6449400?login=true |
ISSN: | 0035-8711 | DOI: | 10.1093/mnras/stab3533 | Fulltext: | open |
Appears in Collections: | 1.01 Articoli in rivista |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
2104.13378-4.pdf | postprint | 895.17 kB | Adobe PDF | View/Open |
stab3533.pdf | Pdf editoriale | 883.85 kB | Adobe PDF | View/Open |
Page view(s)
53
checked on Sep 12, 2024
Download(s)
25
checked on Sep 12, 2024
Google ScholarTM
Check
Altmetric
Altmetric
Items in DSpace are published in Open Access, unless otherwise indicated.