SIMBAD references

2020MNRAS.498.5399H - Mon. Not. R. Astron. Soc., 498, 5399-5416 (2020/November-2)

Intensive disc-reverberation mapping of Fairall 9: first year of Swift and LCO monitoring.

HERNANDEZ SANTISTEBAN J.V., EDELSON R., HORNE K., GELBORD J.M., BARTH A.J., CACKETT E.M., GOAD M.R., NETZER H., STARKEY D., UTTLEY P., BRANDT W.N., KORISTA K., LOHFINK A.M., ONKEN C.A., PAGE K.L., SIEGEL M., VESTERGAARD M., BISOGNI S., BREEVELD A.A., CENKO S.B., DALLA BONTA E., EVANS P.A., FERLAND G., GONZALEZ-BUITRAGO D.H., GRUPE D., JONER M.D., KRISS G., LAPORTE S.J., MATHUR S., MARSHALL F., MEHDIPOUR M., MUDD D., PETERSON B.M., SCHMIDT T., VAUGHAN S. and VALENTI S.

Abstract (from CDS):

We present results of time-series analysis of the first year of the Fairall 9 intensive disc-reverberation campaign. We used Swift and the Las Cumbres Observatory global telescope network to continuously monitor Fairall 9 from X-rays to near-infrared at a daily to subdaily cadence. The cross-correlation function between bands provides evidence for a lag spectrum consistent with the τ ∝ λ4/3 scaling expected for an optically thick, geometrically thin blackbody accretion disc. Decomposing the flux into constant and variable components, the variable component's spectral energy distribution is slightly steeper than the standard accretion disc prediction. We find evidence at the Balmer edge in both the lag and flux spectra for an additional bound-free continuum contribution that may arise from reprocessing in the broad-line region. The inferred driving light curve suggests two distinct components, a rapidly variable (<4 d) component arising from X-ray reprocessing, and a more slowly varying (>100 d) component with an opposite lag to the reverberation signal.

Abstract Copyright: © 2020 The Author(s) Published by Oxford University Press on behalf of the Royal Astronomical Society

Journal keyword(s): accretion, accretion discs - galaxies: active - quasars: individual: Fairall 9

Status at CDS : Large table(s) will be appraised for possible ingestion in VizieR.

Simbad objects: 8

goto Full paper

goto View the references in ADS

To bookmark this query, right click on this link: simbad:2020MNRAS.498.5399H and select 'bookmark this link' or equivalent in the popup menu