101 citations · 287 across the 6 of their papers we have counts for
13 papers
Mass Loss by X-ray Winds from Active Galactic Nuclei
Doron Chelouche
We consider a sample of type-I active galactic nuclei (AGN) that were observed by Chandra/HETG and resulted in high signal-to-noise grating spectra, which we study in detail. All o…
Spectroscopic Constraints on (pseudo-)Scalar Particles from Compact Astrophysical Objects
Doron Chelouche, Raul Rabadan, Sergey Pavlov +1
We propose a new method to search for light (pseudo-)scalar particles in the spectra of compact astrophysical objects such as magnetars, pulsars, and quasars. On accounts of compac…
On the HI content, dust-to-gas ratio and nature of MgII absorbers
Brice Ménard, Doron Chelouche
We estimate the mean dust-to-gas ratio of MgII absorbers as a function of rest equivalent width W_0 and redshift over the range 0.5<z<1.4. Using the expanded SDSS/HST sample of low…
The Dust Content of Galaxy Clusters
Doron Chelouche, Benjamin P. Koester, David V. Bowen
We report on the detection of reddening toward z ~ 0.2 galaxy clusters. This is measured by correlating the Sloan Digital Sky Survey cluster and quasar catalogs and by comparing th…
On the Connection Between Metal Absorbers and Quasar Nebulae
Doron Chelouche, Brice Ménard, David V. Bowen +1
We establish a simple model for the distribution of cold gas around L* galaxies using a large set of observational constraints on the properties of strong MgII absorber systems. Ou…
Lensing, reddening and extinction effects of MgII absorbers from z=0.4 to z=2
Brice Ménard, Daniel Nestor, David Turnshek +5
Using a sample of almost 7000 strong MgII absorbers with 0.4 < z < 2.2 detected in the SDSS DR4 dataset, we investigate the gravitational lensing and dust extinction effects they i…