The evolution of the UV/optical lag spectrum of NGC 7469 seen by the Liverpool Telescope
MetadataShow full item record
We present the results regarding the analysis of an intensive monitoring of the Active Galactic Nucleus (AGN) NGC 7469. We observed the source for 4 months with almost daily cadence in the ugriz bands, using the IO:O on the Liverpool Telescope. We measured the lags with respect to the u band and found a clear change in the lag spectrum between the first and the second half of the campaign. Given that the source varies on different timescales during these two segments, it is likely that different components are dominating the variability at different times. This result further confirms that reverberation models require a more complex geometry than a static illuminating point source and that particular attention has to be given in the interpretation of these delays.
Vincentelli , F M , Beard , M , Hardy , I M , Cackett , E , Horne , K & Pahari , M 2023 , ' The evolution of the UV/optical lag spectrum of NGC 7469 seen by the Liverpool Telescope ' , Astronomische Nachrichten , vol. 344 , no. 4 , e20230018 . https://doi.org/10.48550/arXiv.2302.09152 , https://doi.org/10.1002/asna.20230018
Copyright © 2023 Publisher / the Authors. This work has been made available online in accordance with publisher policies or with permission. This is the author created accepted manuscript following peer review and may differ slightly from the final published version. The final published version of this work is available at https://doi.org/10.1002/asna.20230018
DescriptionFunding: This project was supported by the STFC funding ST/R000638/1. F. M. Vincentelli acknowledges financial support from grant FJC2020-043334-I financed by MCIN/AEI/10.13039/501100011033 and NextGenerationEU/PRTR as well as from the Spanish Ministery of Science and Innovation research project PID2020-120323GB-I00.
Items in the St Andrews Research Repository are protected by copyright, with all rights reserved, unless otherwise indicated.