Oates, SR;
Racusin, JL;
De Pasquale, M;
Kocevski, D;
Page, MJ;
Castro-Tirado, AJ;
Gorosabel, J;
... Smith, PJ; + view all
(2023)
Exploring the canonical behaviour of long Gamma-Ray Bursts using an intrinsic multi-wavelength afterglow correlation.
In:
The Sixteenth Marcel Grossmann Meeting.
(pp. pp. 3150-3161).
World Scientific
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Abstract
In this conference proceeding we summarise our investigation of a correlation discovered between the afterglow luminosity (measured at restframe 200 s; log L200s) and average afterglow decay rate (measured from restframe 200 s onwards; α>200s) of long duration Gamma-ray Burst (GRB) afterglows, found in both the optical/UV and X-ray afterglows. We examine the correlation in the X-ray light curves and find that it does not depend on the presence of specific features in the X-ray light curve. We test how the optical and X-ray parameters log LO,200s, log LX,200s, αO,>200s, αX,>200s relate to each other and to parameters from the prompt emission phase. Using a Monte Carlo simulation, we explore whether these relationships are consistent with predictions of a basic standard afterglow model. We conclude that most of the correlations we observe are consistent with a common underlying physical mechanism producing GRBs and their afterglows regardless of their detailed temporal behaviour, but this basic model has difficulty explaining correlations involving α>200s. We therefore briefly discuss alternative more complex afterglow models.
Type: | Proceedings paper |
---|---|
Title: | Exploring the canonical behaviour of long Gamma-Ray Bursts using an intrinsic multi-wavelength afterglow correlation |
Event: | Proceedings of the MG16 Meeting on General Relativity |
Open access status: | An open access version is available from UCL Discovery |
DOI: | 10.1142/9789811269776_0258 |
Publisher version: | http://dx.doi.org/10.1142/9789811269776_0258 |
Language: | English |
Additional information: | © The Editors© The Editors Open Access volume published by World Scientific Publishing Company. It is distributed under the terms of the Creative Commons Attribution Non-Commercial 4.0 (CC BY-NC) License. |
Keywords: | Gamma-ray bursts; correlations |
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.ucl.ac.uk/id/eprint/10193295 |
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