The observed enhancement of the Fe Kα line in three gravitationally lensed QSOs (MG J0414+0534, QSO 2237+0305, and H1413+117) is interpreted in terms of...
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PublicationA Study of the Correlation between the Amplification of the Fe Kα Line and the X-Ray Continuum of Quasars due to Microlensing
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PublicationA Substantial Population of Red Galaxies at z > 2: Modeling of the Spectral Energy Distributions of an Extended Sample
We investigate the nature of the substantial population of high-redshift galaxies with Js-Ks>=2.3 colors recently discovered as part of our Faint Infrared...
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PublicationA Survey of z>5.7 Quasars in the Sloan Digital Sky Survey. II. Discovery of Three Additional Quasars at z>6
We present the discovery of three new quasars at z>6 in ~ 1300 deg2 of Sloan Digital Sky Survey imaging data, J114816.64+525150.3 (z=6.43), J104845.05+463718.3...
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PublicationA Very Small Array search for the extended Sunyaev-Zel'dovich effect in the Corona Borealis supercluster
We present interferometric imaging at 33 GHz of the Corona Borealis supercluster, using the extended configuration of the Very Small Array. A total area of 24...
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PublicationA virial approach to the relation between the cosmological density parameter Ω0 and the microwave background temperature T0.
Contents: 1. Introduction. 2. The virial equation. 3. Components of kinetic energy. 4. Gravitational potential energy. 5. Validity of putting r.h.s. terms zero...
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PublicationAbsence of anti-correlations and of baryon acoustic oscillations in the galaxy correlation function from the Sloan Digital Sky Survey data release 7
Aims: One of the most striking features predicted by standard models of galaxy formation is the presence of anti-correlations in the matter distribution on...
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PublicationAbsorption signatures of warm-hot gas at low redshift: broad H I Lyα absorbers
We investigate the physical state of H I absorbing gas at low redshift (z = 0.25) using a subset of cosmological, hydrodynamic simulations from the...
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PublicationAbsorption signatures of warm-hot gas at low redshift: O VI
We investigate the origin and physical properties of O VI absorbers at low redshift (z= 0.25) using a subset of cosmological, hydrodynamical simulations from...
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PublicationAbundance of LIGO/Virgo Black Holes from Microlensing Observations of Quasars with Reverberation Mapping Size Estimates
Assuming a population of black holes (BHs) with masses in the range inferred by LIGO/Virgo from BH mergers, we use quasar microlensing observations to estimate...