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Title: Simulations of the OzDES AGN reverberation mapping project

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 (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 ~35–45 % 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 R–L relationship parameters for Hβ, MgIIλ2798, and C IVλ1549. As a result, extending the baseline survey by either increasing the spectroscopic cadence,more » 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.« less

Authors:
 [1];  [2];  [3];  [2];  [2];  [2];  [4];  [5];  [2];  [4];  [6];  [6];  [7];  [8]
+ Show Author Affiliations
  1. Univ. of Queensland, Brisbane (Australia); Univ. of Copenhagen, Copenhagen (Denmark)
  2. The Ohio State Univ., Columbus, OH (United States)
  3. Univ. of Queensland, Brisbane (Australia)
  4. Univ. of Copenhagen, Copenhagen (Denmark)
  5. Univ. of Copenhagen, Copenhagen (Denmark); Univ. of Arizona, Tucson, AZ (United States)
  6. Univ. of Cambridge, Cambridge (United Kingdom)
  7. Australian National Univ., Canberra (Australia)
  8. Australian Astronomical Observatory, North Ryde (Australia)
Publication Date:
Research Org.:
Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC), High Energy Physics (HEP)
Contributing Org.:
DES
OSTI Identifier:
1212756
Report Number(s):
FERMILAB-PUB-15-139-AE
Journal ID: ISSN 0035-8711; arXiv eprint number arXiv:1504.03031
Grant/Contract Number:  
AC02-07CH11359
Resource Type:
Accepted Manuscript
Journal Name:
Monthly Notices of the Royal Astronomical Society
Additional Journal Information:
Journal Volume: 453; Journal Issue: 2; Journal ID: ISSN 0035-8711
Publisher:
Royal Astronomical Society
Country of Publication:
United States
Language:
English
Subject:
79 ASTRONOMY AND ASTROPHYSICS; quasars: general; quasars: supermassive black holes; dark energy

Citation Formats

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. Simulations of the OzDES AGN reverberation mapping project. United States: N. p., 2015. Web. doi:10.1093/mnras/stv1718.
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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. Simulations of the OzDES AGN reverberation mapping project. United States. https://doi.org/10.1093/mnras/stv1718
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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. Wed . "Simulations of the OzDES AGN reverberation mapping project". United States. https://doi.org/10.1093/mnras/stv1718. https://www.osti.gov/servlets/purl/1212756.
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@article{osti_1212756,
title = {Simulations of the OzDES AGN reverberation mapping project},
author = {King, Anthea L. and Martini, Paul and Davis, Tamara M. and Denney, K. D. and Kochanek, C. S. and Peterson, Bradley M. and Skielboe, Andreas and Vestergaard, Marianne and Huff, Eric and Watson, Darach and Banerji, Manda and McMahon, Richard and Sharp, Rob and Lidman, C.},
abstractNote = {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 (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 ~35–45 % 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 R–L relationship parameters for Hβ, MgIIλ2798, and C IVλ1549. As a result, 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.},
doi = {10.1093/mnras/stv1718},
journal = {Monthly Notices of the Royal Astronomical Society},
number = 2,
volume = 453,
place = {United States},
year = {Wed Aug 26 00:00:00 EDT 2015},
month = {Wed Aug 26 00:00:00 EDT 2015}
}
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https://doi.org/10.1093/mnras/stv1718
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    The Dark Energy Survey: more than dark energy - an overview
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    CIV Black Hole Mass Measurements with the Australian Dark Energy Survey (OzDES)
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