Dr Christopher Onken

Contacts

Contact email:christopher.onken@anu.edu.au
Contact phone:(02) 6125 8039
Location:Woolley - Lower - W5
Link:ANU Researchers profile
Research Fellow

Research interests

AGNs, black holes

Projects

  • Bentz, M, Street, R, Onken, C et al. 2021, 'Robotic reverberation mapping of the southern seyfert NGC 3783', The Astrophysical Journal, vol. 906, no. 1.
  • Yuan, W, Macri, L, Peterson, B et al. 2021, 'The Cepheid Distance to the Narrow-line Seyfert 1 Galaxy NGC 4051', The Astrophysical Journal, vol. 913, no. 1.
  • Roberts, C, Bentz, M, Vasiliev, E et al. 2021, 'The Black Hole Mass of NGC 4151 from Stellar Dynamical Modeling', The Astrophysical Journal, vol. 916, no. 1.
  • Chang, S, Onken, C, Wolf, C et al. 2021, 'SkyMapper optical follow-up of gravitational wave triggers: Alert science data pipeline and LIGO/Virgo O3 run', Publications of the Astronomical Society of Australia, vol. 38, pp. 1-11.
  • Jenniskens, P, Gabadirwe, M, Yin, Q et al. 2021, 'The impact and recovery of asteroid 2018 LA', Meteoritics and Planetary Science, vol. 56, no. 4, pp. 844ââ¬â893.
  • Wolf, C, Golding, J, Hon, W et al. 2020, 'SkyMapper colours of Seyfert galaxies and Changing-Look AGN', Monthly Notices of the Royal Astronomical Society, vol. 499, no. 1, pp. 1005-1022.
  • Chang, S, Wolf, C & Onken, C 2020, 'Photometric flaring fraction of M dwarf stars from the SkyMapper Southern Survey', Monthly Notices of the Royal Astronomical Society, vol. 491, pp. 39-50.
  • Wolf, C, Hon, W, Bian, F et al. 2020, 'Ultra-luminous quasars at redshift z > 4.5 from SkyMapper', Monthly Notices of the Royal Astronomical Society, vol. 491, no. 2, pp. 1970-1979.
  • Hlabathe, M, Starkey , D, Horne, K et al. 2020, 'Robotic reverberation mapping of the broad-line radio galaxy 3C 120', Monthly Notices of the Royal Astronomical Society, vol. 497, no. 3, pp. 2910-2929.
  • Yuan, W, Fausnaugh, M, Hoffman, S et al. 2020, 'The cepheid distance to the seyfert 1 galaxy NGC 4151', The Astrophysical Journal, vol. 902, no. 1, pp. 1-15.
  • Hernandez Santisteban, J, Edelson, R, Horne, K et al. 2020, 'Intensive disc-reverberation mapping of Fairall 9: First year of Swift and LCO monitoring', Monthly Notices of the Royal Astronomical Society, vol. 498, no. 4, pp. 5399-5416.
  • Onken, C, Bian, F, Fan, X et al. 2020, 'A thirty-four billion solar mass black hole in SMSS J2157-3602, the most luminous known quasar', Monthly Notices of the Royal Astronomical Society, vol. 496, no. 2, pp. 2309-2314.
  • Bentz, M, Ferrarese, L, Onken, C et al. 2019, 'A Cepheid-based Distance to the Seyfert Galaxy NGC 6814', The Astrophysical Journal, vol. 885, no. 2, pp. -.
  • Onken, C, Wolf, C, Bessell, M et al. 2019, 'SkyMapper Southern Survey: Second data release (DR2)', Publications of the Astronomical Society of Australia, vol. 36.
  • Tonry, J, Denneau, L, Flewelling, H et al. 2018, 'The ATLAS All-Sky Stellar Reference Catalog', The Astrophysical Journal, vol. 867, no. 105, pp. -.
  • De Rosa, G, Fausnaugh, M, Grier, C et al. 2018, 'Velocity-resolved Reverberation Mapping of Five Bright Seyfert 1 Galaxies', The Astrophysical Journal, vol. 866, no. 133, pp. 20pp.
  • Fausnaugh, M, Starkey , D, Horne, K et al. 2018, 'Continuum Reverberation Mapping of the Accretion Disks in Two Seyfert 1 Galaxies', The Astrophysical Journal, vol. 854, no. 107, pp. 20pp.
  • Wolf, C, Bian, F, Onken, C et al 2018, 'Discovery of the Most Ultra-Luminous QSO Using GAIA, SkyMapper, and WISE', Publications of the Astronomical Society of Australia, vol. 35, pp. 1-6.
  • Wolf, C, Onken, C, Luvaul, L et al 2018, 'SkyMapper Southern Survey: First Data Release (DR1)', Publications of the Astronomical Society of Australia, vol. 35, pp. 1-29.
  • Scalzo, R, Yuan, F, Childress, M et al. 2017, 'The SkyMapper Transient Survey', Publications of the Astronomical Society of Australia, vol. 34, pp. e030 (13 pp).
  • Murphy, T, Kaplan, D, Croft, S et al. 2017, 'A search for long-time-scale, low-frequency radio transients', Monthly Notices of the Royal Astronomical Society, vol. 466, no. 2, pp. 1944-1953pp.
  • Acharyya, A, Anderson, G, Bessell, M et al 2017, 'Follow Up of GW170817 and Its Electromagnetic Counterpart by Australian-Led Observing Programmes', Publications of the Astronomical Society of Australia, vol. 34, pp. 1-21.
  • Fausnaugh, M, Grier, C, Bentz, M et al 2017, 'Reverberation Mapping of Optical Emission Lines in Five Active Galaxies', Astrophysical Journal, The, vol. 840, no. 2, 27pp.
  • Batiste, M, Bentz, M, Raimundo, S et al. 2017, 'Recalibration of the M BH-s * Relation for AGN', Astrophysical Journal Letters, vol. 838, no. 1, pp. 6pp.
  • Batiste, M, Bentz, M, Manne-Nicholas, E et al. 2017, 'The BRAVE Program. I. Improved Bulge Stellar Velocity Dispersion Estimates for a Sample of Active Galaxies', The Astrophysical Journal, vol. 835, no. 2, pp. 11pp.
  • Abbott, B, Abbott, R, Abbott, T et al 2016, 'Supplement: "Localization and broadband follow-up of the gravitational-wave transient GW150914"', Astrophysical Journal Supplement Series, vol. 225, no. 1, pp. (15pp).
  • Karouzos, M, Woo, J, Matsuoka, K et al 2015, 'Rest-Frame UV Single-Epoch Black Hole Mass Estimates of Low-Luminosity AGNs at Intermediate Redshifts', The Astrophysical Journal, vol. 815, no. 2, pp. 1-19.
  • Onken, C, Valluri, M, Brown, J et al 2014, 'The Black Hole Mass of NGC 4151. II. Stellar Dynamical Measurement from Near-Infrared Integral Field Spectroscopy', The Astrophysical Journal, vol. 791, no. 1, pp. 1-20.
  • Rapoport, S, Onken, C, Wyithe, J et al. 2013, 'On the significance of the excess number of strong Mg II absorbers observed toward gamma-ray bursts', The Astrophysical Journal, vol. 766, no. 1, p. 7.
  • Kozlowski, S, Onken, C, Kochanek, C et al. 2013, 'The magellanic quasars survey. III. Spectroscopic confirmation of 758 active galactic nuclei behind the magellanic clouds', The Astrophysical Journal, vol. 775, no. 2.
  • Rapoport, S, Onken, C, Schmidt, B et al. 2012, 'Testing gravitational lensing as the source of enhanced strong Mg II absorption toward gamma-ray bursts', The Astrophysical Journal, vol. 754, no. 2, pp. 1-10.
  • Graham, A, Onken, C, Athanassoula, E, Combes, F 2011, 'An expanded Mbh-sigma diagram, and a new calibration of active galactic nuclei masses', Monthly Notices of the Royal Astronomical Society, vol. 412, no. 4, pp. 2211-2228.
  • Denney, K, Peterson, B, Pogge, R et al. 2010, 'Reverberation mapping measurements of black hole masses in six local Seyfert galaxies', The Astrophysical Journal, vol. 721, no. 1, pp. 715-737.
  • Denny, K, Peterson, B, Pogge, R et al. 2009, 'Diverse Kinematic Signatures from Reverberation Mapping of the Broad-Line Region in AGNs', The Astrophysical Journal, vol. 704, no. 2, pp. L80-L84.
  • Onken, C & Kollmeier, J 2008, 'An Improved Method for Using Mg II to Estimate Black Hole Masses in Active Galactic Nuclei', The Astrophysical Journal, vol. 689, no. 1, pp. L13-L16.
  • Onken, C, Valluri, M, Peterson, B et al. 2007, 'The Black Hole Mass of NGC 4151: Comparison of Reverberation Mapping and Stellar Dynamical Measurements', The Astrophysical Journal, vol. 670, no. 1, pp. 105-115.
  • Kollmeier, J, Onken, C, Kochanek, C et al. 2006, 'Black Hole Masses and Eddington Ratios at 0.3
  • Onken, C & Miralda-Escude, J 2004, 'History of Hydrogen Reionization in the Cold Dark Matter Model', The Astrophysical Journal, vol. 610, pp. 1-8.
  • Onken, C, Ferrarese, L, Merritt, D et al. 2004, 'Supermassive Black Holes in Active Galactic Nuclei. II. Calibration of the Black Hole Mass-Velocity Dispersion Relationship for Active Galactic Nuclei', The Astrophysical Journal, vol. 615, pp. 645-651.
  • Peterson, B, Ferrarese, L, Gilbert, K et al. 2004, 'Central Masses and Broad-Line Region Sizes of Active Galactic Nuclei. II. A Homogeneous Analysis of a Large Reverberation-Mapping Database', The Astrophysical Journal, vol. 613, no. 1, pp. 682-699.