All Outputs (3)

An obscured quasar census with the 4MOST IR AGN survey: design, predicted properties, and scientific goals (2025)
Journal Article
Andonie, C., Alexander, D. M., Greenwell, C., Fotopoulou, S., Hickox, R., Rosario, D. J., Villforth, C., Buchner, J., Krogager, J.-K., Laloux, B., Merloni, A., Salvato, M., Streicher, O., & Yan, W. (2025). An obscured quasar census with the 4MOST IR AGN survey: design, predicted properties, and scientific goals. Monthly Notices of the Royal Astronomical Society, 539(3), 2202-2229. https://doi.org/10.1093/mnras/staf624

We present the 4MOST (4-metre Multi-Object Spectroscopic Telescope) infrared (IR) AGN survey, the first large-scale optical spectroscopic survey characterizing mid-infrared (MIR) selected obscured active galactic nuclei (AGNs). The survey targets ≈ 2... Read More about An obscured quasar census with the 4MOST IR AGN survey: design, predicted properties, and scientific goals.

The NuSTAR Serendipitous Survey: The 80 Month Catalog and Source Properties of the High-energy Emitting Active Galactic Nucleus and Quasar Population (2024)
Journal Article
Klindt, L., Lansbury, G. B., Rosario, D. J., Alexander, D. M., Aird, J., Stern, D., Forster, K., Koss, M. J., Greenwell, C. L., Bauer, F. E., Ricci, C., Tomsick, J., Brandt, W. N., Connor, T., Boorman, P. G., Annuar, A., Ballantyne, D. R., Chen, C.-T., Civano, F., Comastri, A., …van Soelen, B. (2024). The NuSTAR Serendipitous Survey: The 80 Month Catalog and Source Properties of the High-energy Emitting Active Galactic Nucleus and Quasar Population. Astrophysical Journal Supplement, 273(2), Article 20. https://doi.org/10.3847/1538-4365/ad4a71

We present a catalog of hard X-ray serendipitous sources detected in the first 80 months of observations by the Nuclear Spectroscopic Telescope Array (NuSTAR). The NuSTAR serendipitous survey 80 month (NSS80) catalog has an unprecedented ∼62 Ms of ef... Read More about The NuSTAR Serendipitous Survey: The 80 Month Catalog and Source Properties of the High-energy Emitting Active Galactic Nucleus and Quasar Population.

Accretion properties of X-ray AGN: evidence for radiation-regulated obscuration with redshift-dependent host galaxy contribution (2024)
Journal Article
Laloux, B., Georgakakis, A., Alexander, D. M., Buchner, J., Andonie, C., Acharya, N., Aird, J., Alonso-Tetilla, A. V., Bongiorno, A., Hickox, R. C., Lapi, A., Musiimenta, B., Almeida, C. R., Villforth, C., & Shankar, F. (2024). Accretion properties of X-ray AGN: evidence for radiation-regulated obscuration with redshift-dependent host galaxy contribution. Monthly Notices of the Royal Astronomical Society, 532(3), 3459-3479. https://doi.org/10.1093/mnras/stae1649