Research output per year
Research output per year
Personal profile
Research Interests
Observational Cosmology
Quasars and Active Galactic Nuclei
Galaxy Formation and Evolution
Surveys and Time-Domain Science
Professional Information
I am an extragalactic observer. I mainly work on a range of topics centered on quasars and supermassive black holes (SMBHs), to understand the physics and evolution of these exotic objects in the cosmological context. Specifically, I work on the large-scale structure traced by quasars, the demography of SMBHs as a function of cosmic time, the phenomenology and physics of black hole accretion, and the co-evolution of black holes and host galaxies. I use multi-wavelength survey data and dedicated observing programs to carry out these studies.
Teaching
Office Address
124 Astronomy
1002 W. Green St.
Urbana, IL
Office Phone
Education/Academic qualification
Astronomy, PHD, Princeton University
Sep 1 2005 → Aug 31 2009
Award Date: Oct 1 2009
Fingerprint
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Collaborations and top research areas from the last five years
Recent external collaboration on country/territory level. Dive into details by clicking on the dots or
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A SPectroscopic Survey of Biased Halos in the Reionization Era (ASPIRE): Spectroscopically Complete Census of Obscured Cosmic Star Formation Rate Density at z = 4-6
Sun, F., Wang, F., Yang, J., Champagne, J. B., Decarli, R., Fan, X., Bañados, E., Cai, Z., Colina, L., Egami, E., Hennawi, J. F., Jin, X., Jun, H. D., Khusanova, Y., Li, M., Li, Z., Lin, X., Liu, W., Meyer, R. A. & Pudoka, M. A. & 8 others, , Feb 10 2025, In: Astrophysical Journal. 980, 1, 12.Research output: Contribution to journal › Article › peer-review
Open Access -
Estimating masses of supermassive black holes in active galactic nuclei from the H α emission line
Dalla Bontà, E., Peterson, B. M., Grier, C. J., Berton, M., Brandt, W. N., Ciroi, S., Corsini, E. M., Dalla Barba, B., Davies, R., Dehghanian, M., Edelson, R., Foschini, L., Gasparri, D., Ho, L. C., Horne, K., Iodice, E., Morelli, L., Pizzella, A., Portaluri, E. & Shen, Y. & 2 others, , Apr 1 2025, In: Astronomy and Astrophysics. 696, A48.Research output: Contribution to journal › Article › peer-review
Open Access -
Testing disc reprocessing models for AGN optical variability by comparison of X-ray and optical power spectra of NGC 4395
Beard, M. W. J., MᶜHardy, I. M., Horne, K., Cackett, E. M., Vincentelli, F., Santisteban, J. V. H., Miller, J., Dhillon, V. S., Knapen, J. H., Littlefair, S. P., Kynoch, D., Breedt, E., Shen, Y. & Gelbord, J., Feb 1 2025, In: Monthly Notices of the Royal Astronomical Society. 537, 1, p. 293-305 13 p.Research output: Contribution to journal › Article › peer-review
Open Access -
The eROSITA Final Equatorial Depth Survey (eFEDS): The hard X-ray selected sample
Nandra, K., Waddell, S. G. H., Liu, T., Buchner, J., Dwelly, T., Salvato, M., Shen, Y., Wu, Q., Arcodia, R., Boller, T., Brunner, H., Brusa, M., Collmar, W., Comparat, J., Georgakakis, A., Grau, M., Hämmerich, S., Ibarra-Medel, H., Igo, Z. & Krumpe, M. & 8 others, , Jan 1 2025, In: Astronomy and Astrophysics. 693, A212.Research output: Contribution to journal › Article › peer-review
Open Access -
Tip of the Iceberg: Overmassive Black Holes at 4 < z < 7 Found by JWST Are Not Inconsistent with the Local MBH-M* Relation
Li, J., Silverman, J. D., Shen, Y., Volonteri, M., Jahnke, K., Zhuang, M. Y., Scoggins, M. T., Ding, X., Harikane, Y., Onoue, M. & Tanaka, T. S., Mar 1 2025, In: Astrophysical Journal. 981, 1, 19.Research output: Contribution to journal › Article › peer-review
Open Access