301 citations
- Goddard Space Flight CenterUS76 papers
- University of Maryland, Baltimore CountyUS29 papers
- University of Maryland, College ParkUS18 papers
- Universities Space Research AssociationUS16 papers
- Centre National de la Recherche ScientifiqueFR11 papers
- Max Planck Institute for AstrophysicsDE11 papers
- Pennsylvania State UniversityUS11 papers
- European Space Astronomy CentreES10 papers
- Johns Hopkins UniversityUS9 papers
- Max Planck Institute for Extraterrestrial PhysicsDE9 papers
- National Institute for AstrophysicsIT9 papers
- University of OxfordGB8 papers
7 papers · 1 filter
Chandra Discovery of a Binary Active Galactic Nucleus in Mrk 739
Michael Koss, Richard Mushotzky, Ezequiel Treister +6
We have discovered a binary AGN in the galaxy Mrk 739 using Chandra and Swift BAT. We find two luminous L_2-10 keV=1.1*10^43 and 1.0*10^42 erg/s, unresolved nuclei with a projected…
High-energy emission from NGC 5506, the brightest hard X-ray Narrow Line Seyfert 1 galaxy
S. Soldi, V. Beckmann, N. Gehrels +2
We present results on the hard X-ray emission of NGC 5506, the brightest narrow line Seyfert 1 galaxy above 20 keV. All the recent observations by INTEGRAL, Swift and Suzaku have b…
Merging and Clustering of the Swift BAT AGN Sample
Michael Koss, Richard Mushotzky, Sylvain Veilleux +1
We discuss the merger rate, close galaxy environment, and clustering on scales up to a Mpc of the SWIFT BAT hard X-ray sample of nearby (z<0.05), moderate-luminosity active galacti…
The Herschel-ATLAS: Evolution of the 250um luminosity function out to z=0.5
S. Dye, L. Dunne, S. Eales +65
We have determined the luminosity function of 250um-selected galaxies detected in the ~14 sq.deg science demonstration region of the Herschel-ATLAS project out to a redshift of z=0…
GRB 090417B and its Host Galaxy: A Step Towards an Understanding of Optically-Dark Gamma-Ray Bursts
Stephen T. Holland, Boris Sbarufatti, Rongfeng Shen +10
GRB 090417B was an unusually long burst with a T_90 duration of at least 2130 s and a multi-peaked light curve at energies of 15-150 keV. It was optically dark and has been associa…
Searching for dark matter in X-rays: how not to check the dark matter origin of a spectral feature
Alexander Kusenko, Michael Loewenstein
In a recent preprint entitled "Searching for dark matter in X-rays: how to check the dark matter origin of a spectral feature" [arXiv:1001.0644v1], the authors have claimed that so…