6 papers
AGNFormer I: Reconstruction of AGN spectra using a probabilistic transformer model
Benedict L. Rouse, Franz E. Bauer, Tomasz RóżaÅski +8
We explore how an uncertainty-aware transformer-based architecture can leverage information embedded across the entire observed optical spectra of AGN, focusing on the algorithm's…
The X-ray properties of the most luminous quasars with strong emission-line outflows
Anastasia Shlentsova, Bartolomeo Trefoloni, Matilde Signorini +7
Strong outflows from active galactic nuclei are frequently observed in objects with lower coronal X-ray luminosity. This intrinsic X-ray weakness is considered a requirement for th…
Early Stages of Dusty Tori: The First Infrared Spectra from a Highly Multiscale Quasar Simulation
Jaeden Bardati, Philip F. Hopkins, Gordon T. Richards
We present the first infrared spectral predictions from a self-consistent simulation of the formation of a quasar in a starburst galaxy, spanning the cosmological environment to sc…
Luminous Mid-IR Selected Obscured Quasars at Cosmic Noon in SDSS Stripe82 II: Spectroscopic Diversity and Broad H Emissions
Ben Wang, Yuzo Ishikawa, Joseph F. Hennawi +5
We present a multiwavelength spectroscopic survey of 23 luminous mid-infrared-selected Type-2 quasars at redshifts z = 0.88 to 3.49. The targets were selected in the SDSS Stripe 82…
Gemini Near Infrared SpectrographDistant Quasar Survey: the Chandra View
Andrea Marlar, Ohad Shemmer, Michael S. Brotherton +5
We present Chandra observations of 63 sources from the Gemini Near Infrared SpectrographDistant Quasar Survey (GNIRS-DQS) of which 54 were targeted by snapshot observations in C…
Luminous Mid-IR Selected Type-2 Quasars at Cosmic Noon in SDSS Stripe82 I: Selection, Composite Photometry, and Spectral Energy Distributions
Ben Wang, Joseph F. Hennawi, Zheng Cai +6
We analyze 23 spectroscopically confirmed Type-2 quasars (QSOs) selected from the WISE 22m band in the SDSS Stripe 82 region, focusing on their multi-band photometry and sp…