OzDES Reverberation - K Romer Apr 2022.pdf (1.2 MB)
OzDES reverberation mapping program: lag recovery reliability for 6-yr C IV analysis
journal contribution
posted on 2023-06-10, 03:10 authored by A Penton, U Malik, T M Davis, P Martini, Z Yu, R Sharp, C Lidman, B E Tucker, J K Hoormann, M Aguena, S Allam, J Annis, Sunayana Bhargava, Kathy RomerKathy Romer, Reese WilkinsonReese Wilkinson, DES Collaboration, othersWe present the statistical methods that have been developed to analyse the OzDES reverberation mapping sample. To perform this statistical analysis we have created a suite of customizable simulations that mimic the characteristics of each source in the OzDES sample. These characteristics include: the variability in the photometric and spectroscopic light curves, the measurement uncertainties, and the observational cadence. By simulating the sources in the OzDES sample that contain the C iv emission line, we developed a set of criteria that rank the reliability of a recovered time-lag depending on the agreement between different recovery methods, the magnitude of the uncertainties, and the rate at which false positives were found in the simulations. These criteria were applied to simulated light curves and these results used to estimate the quality of the resulting Radius-Luminosity relation. We grade the results using three quality levels (gold, silver, and bronze). The input slope of the R-L relation was recovered within 1s for each of the three quality samples, with the gold standard having the lowest dispersion with a recovered a R-L relation slope of 0.454 ± 0.016 with an input slope of 0.47. Future work will apply these methods to the entire OzDES sample of 771 AGN.
History
Publication status
- Published
File Version
- Accepted version
Journal
Monthly Notices of the Royal Astronomical SocietyISSN
0035-8711Publisher
Oxford University PressExternal DOI
Issue
3Volume
509Page range
4008-4023Department affiliated with
- Physics and Astronomy Publications
Full text available
- Yes
Peer reviewed?
- Yes
Legacy Posted Date
2022-04-20First Open Access (FOA) Date
2022-04-20First Compliant Deposit (FCD) Date
2022-04-13Usage metrics
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