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  Partner: UNT College of Arts and Sciences
 Department: Physics
A Statistical Relation Between the X-ray Spectral Index and Eddington Ratio of Active Galactic Nuclei in Deep Surveys

A Statistical Relation Between the X-ray Spectral Index and Eddington Ratio of Active Galactic Nuclei in Deep Surveys

Date: May 22, 2013
Creator: Brightman, M.; Silverman, John David; Mainieri, Vincenzo; Ueda, Yoshihiro; Schramm, Malte; Matsuoka, Kenta et al.
Description: This article presents an investigation into how well the properties of the accretion flow on to a supermassive black hole may be coupled to those of the overlying hot corona.
Contributing Partner: UNT College of Arts and Sciences
Investigation of Structural and Optical Properties of Ag Nanoclusters Formed in Si(100) After Multiple Implantations of Low Energies Ag Ions and Post-Thermal Annealing at a Temperature Below the Ag-Si Eutectic Point

Investigation of Structural and Optical Properties of Ag Nanoclusters Formed in Si(100) After Multiple Implantations of Low Energies Ag Ions and Post-Thermal Annealing at a Temperature Below the Ag-Si Eutectic Point

Date: April 2, 2014
Creator: Dhoubhadel, Mangal; Rout, Bibhudutta; Lakshantha, Wickramaarachchige J.; Das, Sushanta K.; D'Souza, Francis; Glass, Gary A. et al.
Description: This paper investigates the synthesis of Ag NCs in Si(100) substrate by implanting multiple energies and fluences of Ag ions and subsequent thermal annealing.
Contributing Partner: UNT College of Arts and Sciences
PAH Emission and Star Formation in the Host of the z ~ 2.56 Cloverleaf QSO

PAH Emission and Star Formation in the Host of the z ~ 2.56 Cloverleaf QSO

Date: March 30, 2007
Creator: Lutz, Dieter; Sturm, Eckhard; Tacconi, Linda; Valiante, Elisabetta; Schweitzer, Mario; Netzer, Hagai et al.
Description: This article reports the first detection of the 6.2 and 7.7 μm infrared polycyclic aromatic hydrocarbon emission features in the spectrum of a high-redshift QSO, from the Spitzer IRS spectrum of the Cloverleaf lensed QSO.
Contributing Partner: UNT College of Arts and Sciences
Locating Star-Forming Regions in Quasar Host Galaxies

Locating Star-Forming Regions in Quasar Host Galaxies

Date: November 5, 2013
Creator: Young, Jason E.; Eracleous, Michael; Shemmer, Ohad; Netzer, Hagai; Gronwall, Caryl; Lutz, Dieter et al.
Description: This article presents a study of the morphology and intensity of star formation in the host galaxies of eight Palomar-Green quasars using observations with the Hubble Space Telescope.
Contributing Partner: UNT College of Arts and Sciences
Dust Covering Factor, Silicate Emission, and Star Formation in Luminous QSOs

Dust Covering Factor, Silicate Emission, and Star Formation in Luminous QSOs

Date: April 5, 2007
Creator: Maiolino, Roberto; Shemmer, Ohad; Imanishi, Masatoshi; Netzer, Hagai; Oliva, Ernesto; Lutz, Dieter et al.
Description: This article presents Spitzer IRS low resolution, mid-IR spectra of a sample of 25 high luminosity QSOs at 2 < z < 3.5.
Contributing Partner: UNT College of Arts and Sciences
A Population of X-Ray Weak Quasars: PHL 1811 Analogs at High Redshift

A Population of X-Ray Weak Quasars: PHL 1811 Analogs at High Redshift

Date: April 15, 2011
Creator: Wu, Jianfeng; Brandt, William Nielsen; Hall, Patrick B.; Gibson, Robert R.; Richards, Gordon T.; Schneider, Donald P. et al.
Description: This article reports the results from Chandra and XMM-Newton observations of a sample of 10 type 1 quasars selected to have unusual UV emission-line properties similar to those of PHL 1811.
Contributing Partner: UNT College of Arts and Sciences
GRB 060505: A Possible Short-Duration Gamma-Ray Burst in a Star-Forming Region at a Redshift of 0.09

GRB 060505: A Possible Short-Duration Gamma-Ray Burst in a Star-Forming Region at a Redshift of 0.09

Date: March 13, 2007
Creator: Ofek, Efran; Cenko, Brad; Gal-Yam, Avishay; Fox, Derek B.; Nakar, Ehud; Rau, Arne et al.
Description: This article reports the discovery of the GRB optical afterglow and observations of its environment using Gemini South, the Hubble Space Telescope, Chandra, Swift, and the Very Large Array.
Contributing Partner: UNT College of Arts and Sciences
Optically Selected BL Lacertae Candidates from the Sloan Digital Sky Survey Data Release Seven

Optically Selected BL Lacertae Candidates from the Sloan Digital Sky Survey Data Release Seven

Date: October 30, 2009
Creator: Plotkin, Richard M.; Anderson, Scott F.; Brandt, William Nielsen; Diamond-Stanic, Aleksandar M.; Fan, Xiaohui; Hall, Patrick B. et al.
Description: This article presents a sample of 723 optically selected BL Lac candidates from the Sloan Digital Sky Survey Data Release 7 spectroscopic database.
Contributing Partner: UNT College of Arts and Sciences
The X-Ray Properties of the Most Luminous Quasars From the Sloan Digital Sky Survey

The X-Ray Properties of the Most Luminous Quasars From the Sloan Digital Sky Survey

Date: May 18, 2007
Creator: Just, Dennis W.; Brandt, William Nielsen; Shemmer, Ohad; Steffen, Aaron; Schneider, Donald P.; Chartas, George et al.
Description: This article studies the X-ray properties of a representative sample of 59 of the most optically luminous quasars in the universe spanning a redshift range of z ≈ 1.5-4.5.
Contributing Partner: UNT College of Arts and Sciences
Exploratory X-Ray Monitoring of Luminous Radio-Quiet Quasars at High Redshift: Initial Results

Exploratory X-Ray Monitoring of Luminous Radio-Quiet Quasars at High Redshift: Initial Results

Date: January 17, 2014
Creator: Shemmer, Ohad; Brandt, William Nielsen; Paolillo, Maurizio; Kaspi, Shai; Vignali, Christian; Stein, Matthew S. et al.
Description: This article presents initial results from an exploratory X-ray monitoring project of two groups of comparably luminous radio-quiet quasars.
Contributing Partner: UNT College of Arts and Sciences
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