activity
20072023
most citedThe Hot and Energetic Universe: A White Paper presenting the science theme motivating the Athena+ mission

395 citations · 1.1k across the 23 of their papers we have counts for

collaborators

23 papers

astro-ph.HE2023★ 6 cited

Coordinated X-ray and UV absorption within the accretion disk wind of the active galactic nucleus PG 1126-041

M. Giustini, P. Rodríguez Hidalgo, J. N. Reeves +14

Accretion disk winds launched close to supermassive black holes (SMBHs) are a viable mechanism to provide feedback between the SMBH and the host galaxy. We aim to characterize the…

astro-ph.GA2021★ 12 cited

On Synthetic Absorption Line Profiles of Thermally Driven Winds from Active Galactic Nuclei

Shalini Ganguly, Daniel Proga, Tim Waters +7

The warm absorbers observed in more than half of all nearby active galactic nuclei (AGN) are tracers of ionized outflows located at parsec scale distances from the central engine.…

astro-ph.GA2018★ 12 cited

X-ray and multi-epoch optical/UV investigations of BAL to non-BAL quasar transformations

Sameer, W. N. Brandt, S. Anderson +10

We report on an X-ray and optical/UV study of eight Broad Absorption Line (BAL) to non-BAL transforming quasars at 1.7-2.2 over 0.29-4.95 rest-frame years with at lea…

astro-ph.GA2018★ 29 cited

Emergence and Variability of Broad Absorption Line Quasar Outflows

Jesse A. Rogerson, Patrick B. Hall, Nabeel S. Ahmed +3

We isolate a set of quasars that exhibit emergent C iv broad absorption lines (BALs) in their spectra by comparing spectra in the SDSS Data Release 7 and the SDSS/BOSS Data Release…

astro-ph.GA2017★ 27 cited

HST and Ground-Based Spectroscopy of Quasar Outflows: From Mini-BALs to BALs

E. A. Moravec, F. Hamann, D. M. Capellupo +3

Quasar outflows have been posited as a mechanism to couple super-massive black holes to evolution in their host galaxies. We use multi-epoch spectra from the Hubble Space Telescope…

astro-ph.GA2015★ 43 cited

Multi-Epoch Observations of Extremely High-Velocity Emergent Broad Absorption

Jesse A. Rogerson, Patrick B. Hall, Paola Rodríguez Hidalgo +3

We present the discovery of the highest velocity CIV broad absorption line to date in the z=2.47 quasar SDSS J023011.28+005913.6, hereafter J0230. In comparing the public DR7 and D…