Oates, S;
Racusin, JL;
De Pasquale, M;
Kocevski, D;
Page, MJ;
Castro-Tirado, AJ;
Gorosabel, J;
... Smith, PJ; + view all
(2020)
Exploring the canonical behaviour of long gamma-ray bursts with an intrinsic multiwavelength afterglow correlation.
In:
Proceedings of Multifrequency Behaviour of High Energy Cosmic Sources - XIII — PoS(MULTIF2019).
Sissa Medialab: Palermo, Italy.
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Abstract
In this conference proceeding we examine a correlation between the afterglow luminosity (measured at restframe 200 s; logL200s) and average afterglow decay rate (measured from restframe 200 s onwards; α>200s) found in both the optical/UV and X-ray afterglows of long duration Gamma-ray Bursts (GRBs). Examining the X-ray light curves, we find the correlation does not depend on the presence of specific light curve features. We explore how the parameters in the optical/UV and X-ray bands relate to each other and to the prompt emission phase. We also use a Monte Carlo simulation to explore whether these relationships are consistent with predictions of the standard afterglow model. We conclude that the correlations are consistent with a common underlying physical mechanism producing GRBs and their afterglows regardless of their detailed temporal behaviour. However, a basic afterglow model has difficulty explaining correlations involving α>200s. We therefore briefly discuss alternative more complex models.
Type: | Proceedings paper |
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Title: | Exploring the canonical behaviour of long gamma-ray bursts with an intrinsic multiwavelength afterglow correlation |
Event: | Multifrequency Behaviour of High Energy Cosmic Sources - XIII |
Dates: | 03 June 2019 |
Open access status: | An open access version is available from UCL Discovery |
DOI: | 10.22323/1.362.0058 |
Publisher version: | https://doi.org/10.22323/1.362.0058 |
Language: | English |
Additional information: | Copyright owned by the author(s) under the term of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License. https://creativecommons.org/licenses/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.ucl.ac.uk/id/eprint/10118626 |
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