activity
20012021
most citedThe Hard X-ray Spectrum as a Probe for Black-Hole Growth in Radio-Quiet Active Galactic Nuclei

274 citations · 991 across the 6 of their papers we have counts for

collaborators

6 papers

astro-ph.HE2021★ 53 cited

Light bending and X-ray echoes from behind a supermassive black hole

D. R. Wilkins, L. C. Gallo, E. Costantini +2

The innermost regions of accretion disks around black holes are strongly irradiated by X-rays that are emitted from a highly variable, compact corona, in the immediate vicinity of…

astro-ph.HE2009★ 2 cited

Fundamental Accretion and Ejection Astrophysics

J. M. Miller, M. Nowak, K. Nandra +11

Disk accretion may be the fundamental astrophysical process. Stars and planets form through the accretion of gas in a disk. Black holes and galaxies co-evolve through efficient dis…

astro-ph2008★ 274 cited

The Hard X-ray Spectrum as a Probe for Black-Hole Growth in Radio-Quiet Active Galactic Nuclei

Ohad Shemmer, W. N. Brandt, Hagai Netzer +2

We study the hard-X-ray spectral properties of ten highly luminous radio-quiet (RQ) active galactic nuclei (AGNs) at z=1.3-3.2, including new XMM-Newton observations of four of the…

astro-ph2007★ 218 cited

An X-ray, IR, and Submillimeter Flare of Sagittarius A*

D. P. Marrone, F. K. Baganoff, M. R. Morris +14

Energetic flares are observed in the Galactic supermassive black hole Sagittarius A* from radio to X-ray wavelengths. On a few occasions, simultaneous flares have been detected in…

astro-ph2004★ 181 cited

First Simultaneous NIR/X-ray Detection of a Flare from SgrA*

A. Eckart, F. K. Baganoff, M. Morris +9

We report on the first simultaneous near-infrared/X-ray detection of the Sgr A* counterpart which is associated with the massive black hole at the center of the Milky Way. The obse…

astro-ph2001★ 263 cited

The Chandra Deep Survey of the Hubble Deep Field North Area. II. Results from the Caltech Faint Field Galaxy Redshift Survey Area

A. E. Hornschemeier, W. N. Brandt, G. P. Garmire +14

We present results from a 221.9 ks Chandra exposure of the HDF-N and its vicinity, concentrating on the 8.6' X 8.7' area covered by the Caltech Faint Field Galaxy Redshift Survey (…