924 citations · 7.3k across the 114 of their papers we have counts for
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Dramatic X-ray Spectral Variability of the Broad Absorption Line Quasar PG2112+059
S. C. Gallagher, W. N. Brandt, Beverley J. Wills +3
With a 1999 ASCA observation, PG2112+059 became notable as the first Broad Absorption Line (BAL) quasar found to exhibit a typical radio-quiet quasar X-ray continuum underlying a l…
XMM-NEWTON Reveals the Quasar Outflow in PG 1115+080
G. Chartas, W. N. Brandt, S. C. Gallagher
We report on an observation of the Broad Absorption Line (BAL) quasar PG 1115+080 performed with the XMM-Newton observatory. Spectral analysis reveals the second case of a relativi…
A New Method to Map Flares in Quasars
Atsunori Yonehara, Shin Mineshige, Yoh Takei +2
Recently, Chartas et al. (2001) detected a rapid X-ray flare in the gravitationally lensed, multiple image quasar RX J0911.4+0551. Dramatic events, such as rapid X-ray flares, are…
Detection of x-rays from galaxy groups associated with the gravitationally lensed systems PG 1115+080 and B1422+231
C. E. Grant, M. W. Bautz, G. Chartas +1
Gravitational lenses that produce multiple images of background quasars can be an invaluable cosmological tool. Deriving cosmological parameters, however, requires modeling the pot…
The Chandra Deep Field-North Survey. XIII. 2 Ms Point-Source Catalogs
D. M. Alexander, F. E. Bauer, W. N. Brandt +11
We present catalogs for the ~2 Ms Chandra Deep Field-North, currently the deepest X-ray observation of the Universe in the 0.5-8.0 keV band. Five hundred and three (503) X-ray sour…
Coronal X-ray emission from an intermediate-age brown dwarf
Yohko Tsuboi, Yoshitomo Maeda, Eric D. Feigelson +4
We report the X-ray detection of the brown dwarf (BD) companion TWA 5B in a Myr old pre-main sequence binary system. We clearly resolve the faint companion (35 photons)…
Chandra Observations of Nuclear X-ray Emission from a Sample of Radio Sources
J. K. Gambill, R. M. Sambruna, G. Chartas +5
We present the X-ray properties of a sample of 17 radio sources observed with the Chandra X-ray Observatory as part of a project aimed at studying the X-ray emission from their rad…
Chandra Observations of QSO 2237+0305
X. Dai, G. Chartas, E. Agol +2
We present the observations of the gravitationally lensed system QSO 2237+0305 performed with the Chandra X-ray Observatory on 2000 Sept. 6, and on 2001 Dec. 8 for 30.3 ks and 9.5…