Alfonso-Garzón, J;
Van Den Eijnden, J;
Kuin, NPM;
Fürst, F;
Rouco-Escorial, A;
Fabregat, J;
Reig, P;
... Wilson-Hodge, C; + view all
(2024)
Modelling the optical/UV emission of Swift J0243.6+6124 during its 2017-2018 giant outburst.
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Proceedings of Science.
Sissa Medialab
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Abstract
The Be X-ray binary Swift J0243.6+6124 underwent a super-Eddington giant outburst that lasted from September 2017 to February 2018. The reached luminosity was so high, that it became the first Ultraluminous X-ray pulsar (ULXP) in the Galaxy. Simultaneously to this X-ray outburst, optical and UV outbursts were observed. In this work, we try to explain the origin of this emission. We built a physical model considering the heating of the surface of the Be star, the emission from the viscously heated accretion disk, and the irradiation of this accretion disk by the central Xray source. Using this model, we fit the Spectral Energy Distributions built with the available photometric measurements obtained each day along the outburst.
| Type: | Proceedings paper |
|---|---|
| Title: | Modelling the optical/UV emission of Swift J0243.6+6124 during its 2017-2018 giant outburst |
| Event: | MULTIF2023 - Multifrequency Behaviour of High Energy Cosmic Sources XIV |
| Dates: | 12 Jun 2023 |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.22323/1.447.0046 |
| Publisher version: | https://doi.org/10.22323/1.447.0046 |
| Language: | English |
| Additional information: | © Copyright owned by the author(s) under the terms of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License (CC BY-NC-ND 4.0) |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Space and Climate Physics |
| URI: | https://discovery-pp.ucl.ac.uk/id/eprint/10191575 |
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