Simulations of the OzDES AGN reverberation mapping project

King, Anthea L., Martini, Paul, Davis, Tamara M., Denney, K. D., Kochanek, C. S., Peterson, Bradley M., Skielboe, Andreas, Vestergaard, Marianne, Huff, Eric, Watson, Darach, Banerji, Manda, McMahon, Richard, Sharp, Rob and Lidman, C. (2015) Simulations of the OzDES AGN reverberation mapping project. Monthly Notices of the Royal Astronomical Society, 453 2: 1701-1726. doi:10.1093/mnras/stv1718

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Author King, Anthea L.
Martini, Paul
Davis, Tamara M.
Denney, K. D.
Kochanek, C. S.
Peterson, Bradley M.
Skielboe, Andreas
Vestergaard, Marianne
Huff, Eric
Watson, Darach
Banerji, Manda
McMahon, Richard
Sharp, Rob
Lidman, C.
Title Simulations of the OzDES AGN reverberation mapping project
Journal name Monthly Notices of the Royal Astronomical Society   Check publisher's open access policy
ISSN 1365-2966
0035-8711
Publication date 2015-08-06
Year available 2015
Sub-type Article (original research)
DOI 10.1093/mnras/stv1718
Open Access Status File (Publisher version)
Volume 453
Issue 2
Start page 1701
End page 1726
Total pages 26
Place of publication Oxford, United Kingdom
Publisher Oxford University Press
Language eng
Subject 3103 Astronomy and Astrophysics
1912 Space and Planetary Science
Abstract As part of the Australian spectroscopic dark energy survey (OzDES) we are carrying out a large-scale reverberation mapping study of >= 500 quasars over five years in the 30 deg(2) area of the Dark Energy Survey (DES) supernova fields. These quasars have redshifts ranging up to 4 and have apparent AB magnitudes between 16.8 mag < r < 22.5 mag. The aim of the survey is to measure time lags between fluctuations in the quasar continuum and broad emission-line fluxes of individual objects in order to measure black hole masses for a broad range of active galactic nuclei (AGN) and constrain the radius-luminosity (R-L) relationship. Here we investigate the expected efficiency of the OzDES reverberation mapping campaign and its possible extensions. We expect to recover lags for similar to 35-45 per cent of the quasars. AGN with shorter lags and greater variability are more likely to yield a lag measurement, and objects with lags less than or similar to 6 months or similar to 1 yr are expected to be recovered the most accurately. The baseline OzDES reverberation mapping campaign is predicted to produce an unbiased measurement of the R-L relationship parameters for H beta, MgII lambda 2798, and C IV lambda 1549. Extending the baseline survey by either increasing the spectroscopic cadence, extending the survey season, or improving the emission-line flux measurement accuracy will significantly improve the R-L parameter constraints for all broad emission lines.
Formatted abstract
As part of the Australian spectroscopic dark energy survey (OzDES) we are carrying out a large-scale reverberation mapping study of ≥500 quasars over five years in the 30 deg2 area of the Dark Energy Survey (DES) supernova fields. These quasars have redshifts ranging up to 4 and have apparent AB magnitudes between 16.8 mag < r < 22.5 mag. The aim of the survey is to measure time lags between fluctuations in the quasar continuum and broad emission-line fluxes of individual objects in order to measure black hole masses for a broad range of active galactic nuclei (AGN) and constrain the radius–luminosity (RL) relationship. Here we investigate the expected efficiency of the OzDES reverberation mapping campaign and its possible extensions. We expect to recover lags for ∼35–45 per cent of the quasars. AGN with shorter lags and greater variability are more likely to yield a lag measurement, and objects with lags ≲6 months or ∼1 yr are expected to be recovered the most accurately. The baseline OzDES reverberation mapping campaign is predicted to produce an unbiased measurement of the RL relationship parameters for H β, Mg II λ2798, and C IV λ1549. Extending the baseline survey by either increasing the spectroscopic cadence, extending the survey season, or improving the emission-line flux measurement accuracy will significantly improve the RL parameter constraints for all broad emission lines.
Keyword Dark energy
Quasars: general
Quasars: supermassive black holes
Q-Index Code C1
Q-Index Status Confirmed Code
Grant ID CE110001020
FT100100595
AST-1302093
AST-1009756
DFF 4002-00275
AST-1138766
AYA2012-39559
SEV-2012-0234
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Mathematics and Physics
Official 2016 Collection
 
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