X-ray View of Growing Supermassive Black Holes and Their Connections to the Host Galaxies

Postdoctoral Researcher Opportunity

BHOLE Project

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SUPERVISOR/HOST INSTITUTION: Bin Luo (School of Astronomy and Space Science, Nanjing University)

PROJECT TITLE: X-ray View of Growing Supermassive Black Holes and Their Connections to the Host Galaxies

PROJECT DESCRIPTION:  The evolution of galaxies and their central supermassive black holes (SMBHs) are closely linked. X-ray emission is a ubiquitous property of luminous AGNs that dominate SMBH growth through cosmic time, and it provides a clear view of the central engine due to its penetrating power, low dilution from host-galaxy starlight, and the diagnostic power of X-ray spectra. Focusing on a large sample of optical and NIR selected active galaxies, we aim to systematically (1) analyze their available X-ray data, (2) study X-ray images, continua, emission/absorption features, and/or variability, and (3) obtain crucial AGN characteristics such as luminosities, SMBH accretion rates, obscuration properties, SMBH masses, and outflow properties. Utilizing the host-galaxy properties (e.g., stellar mass, star-formation rate, and morphology) obtained via multiwavelength data, we will further investigate the connections between AGNs and their host galaxies.

PROJECT REQUIREMENTS: General familiarity with handling of large astronomical data sets; general knowledge of AGNs and extragalactic astronomy. Expertise in Chandra and XMM-Newton data analysis would be an advantage.

SUPERVISOR’S CONTACT:  bluo@nju.edu.cn  http://astronomy.nju.edu.cn/luobin

RELEVANT PUBLICATIONS:

  1. Yang, Brandt, Luo et al. 2016, arXiv:1608.08224: Long-Term X-ray Variability of Typical Active Galactic Nuclei in the Distant Universe
  2. Luo et al. 2015, ApJ, 805, 122: X-ray Insights into the Nature of PHL 1811 Analogs and Weak Emission-line Quasars: Unification with a Geometrically Thick Accretion Disk?
  3. Luo et al. 2011, ApJ, 740, 37: Revealing a Population of Heavily Obscured Active Galactic Nuclei at z ≈ 0.5-1 in the Chandra Deep Field-South
  4. Xue, Brandt, Luo et al. 2010, ApJ, 720, 368: Color-Magnitude Relations of Active and Non-active Galaxies in the Chandra Deep Fields: High-redshift Constraints and Stellar-mass Selection Effects
  5. Luo et al. 2008, ApJS, 179, 19: The Chandra Deep Field-South Survey: 2 Ms Source Catalogs