A correlation between low-level x-ray fluctuations in the cosmic x-ray background flux and the large numbers of galaxies found in deep optical imaging, to m(sub v) is less than or equal to 24 - 26, is desired. These (faint) galaxies by their morphology and color in deep multi-color CCD images and plate material were optically identified. Statistically significant correlations between these galaxies and low-level x-ray fluctuations at the same positions in multiple deep Einstein HRI observations in PAVO and in a ROSAT PSPC field were searched for. Our aim is to test the hypothesis that faint 'star burst' galaxies might contribute significantly to the cosmic x-ray background (at approximately 1 keV)
Context. Most of the X-ray background (XRB) is generated by discrete X-ray sources. It is likely tha...
Significant uncertainties exist in the measured amplitude of the angular two-point correlation funct...
We present Ginga measurements of the spatial fluctuations in the diffuse X-ray background. When comb...
We present a cross-correlation analysis to constrain the faint galaxy contribution to the cosmic X-r...
We have studied the fluctuations of the soft (0.9-2 keV) X-ray background intensity for ∼10 and ∼2 a...
We have studied the fluctuations of the soft (0.9-2 keV) X-ray background intensity for ~10 arcmin a...
We examine models for the expected contribution to the X-ray background (XRB) from clusters of galax...
I briefly report on the X-ray detection of 10 radio sub-mJy sources in the 2 Ms Chandra observation ...
We test the prediction of Hamilton and Helfand (1993) that faint radio selected galaxies are a new c...
Recent observations of faint galaxies to $b_J \approx 28$ (e.g., Tyson & Seitzer, 1988) show an exce...
A photometric survey of faint galaxies in three high Galactic latitude fields (each ~ 49 arcmin2) w...
In this thesis a study of faint X-ray sources is undertaken to understand the nature and origin of t...
Emission is studied at luminosities lower than those for which individual discrete sources can be st...
We report the detection of the X-ray background fluctuations at small angular scales. ROSAT PSPC ar...
Optical spectroscopy has enabled us to identify the optical counterparts to over 200 faint X-ray sou...
Context. Most of the X-ray background (XRB) is generated by discrete X-ray sources. It is likely tha...
Significant uncertainties exist in the measured amplitude of the angular two-point correlation funct...
We present Ginga measurements of the spatial fluctuations in the diffuse X-ray background. When comb...
We present a cross-correlation analysis to constrain the faint galaxy contribution to the cosmic X-r...
We have studied the fluctuations of the soft (0.9-2 keV) X-ray background intensity for ∼10 and ∼2 a...
We have studied the fluctuations of the soft (0.9-2 keV) X-ray background intensity for ~10 arcmin a...
We examine models for the expected contribution to the X-ray background (XRB) from clusters of galax...
I briefly report on the X-ray detection of 10 radio sub-mJy sources in the 2 Ms Chandra observation ...
We test the prediction of Hamilton and Helfand (1993) that faint radio selected galaxies are a new c...
Recent observations of faint galaxies to $b_J \approx 28$ (e.g., Tyson & Seitzer, 1988) show an exce...
A photometric survey of faint galaxies in three high Galactic latitude fields (each ~ 49 arcmin2) w...
In this thesis a study of faint X-ray sources is undertaken to understand the nature and origin of t...
Emission is studied at luminosities lower than those for which individual discrete sources can be st...
We report the detection of the X-ray background fluctuations at small angular scales. ROSAT PSPC ar...
Optical spectroscopy has enabled us to identify the optical counterparts to over 200 faint X-ray sou...
Context. Most of the X-ray background (XRB) is generated by discrete X-ray sources. It is likely tha...
Significant uncertainties exist in the measured amplitude of the angular two-point correlation funct...
We present Ginga measurements of the spatial fluctuations in the diffuse X-ray background. When comb...