27 citations · 27 across the 3 of their papers we have counts for
3 papers
astro-ph.GA2025
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…
astro-ph.GA2022
Can X-ray Observations Improve Optical-UV-based Accretion-Rate Estimates for Quasars?
Andrea Marlar, Ohad Shemmer, Michael S. Brotherton +2
Current estimates of the normalized accretion rates of quasars (L/L_Edd), rely on measuring the velocity widths of broad optical-UV emission lines (e.g., H and Mg II $\lambda280…
astro-ph.HE2018★ 27 cited
Steep Hard-X-ray Spectra Indicate Extremely High Accretion Rates in Weak Emission-Line Quasars
Andrea Marlar, Ohad Shemmer, S. F. Anderson +8
We present XMM-Newton imaging spectroscopy of ten weak emission-line quasars (WLQs) at , six of which are radio quiet and four which are radio intermediate.…