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  Partner: UNT College of Arts and Sciences
 Department: Physics
 Language: English
Flexible Holographic Fabrication of 3D Photonic Crystal Templates with Polarization Control through a 3D Printed Reflective Optical Element

Flexible Holographic Fabrication of 3D Photonic Crystal Templates with Polarization Control through a 3D Printed Reflective Optical Element

Date: July 21, 2016
Creator: Lowell, David; George, David; Lutkenhaus, Jeffrey; Tian, Chris; Adewole, Murthada; Zhang, Hualiang et al.
Description: This article systematically studies the holographic fabrication of three-dimensional (3D) structures using a single 3D printed reflective optical element (ROE), taking advantage of the ease of design and 3D printing of the ROE.
Contributing Partner: UNT College of Arts and Sciences
Accelerator-based neutron source using a cold deuterium target with degenerate electrons

Accelerator-based neutron source using a cold deuterium target with degenerate electrons

Date: July 17, 2013
Creator: Phillips, R.E. & Ordonez, Carlos A.
Description: This article discusses recent reports of potential cold deuterium targets.
Contributing Partner: UNT College of Arts and Sciences
Holographic Fabrication of Designed Functional Defect Lines in Photonic Crystal Lattice Using a Spatial Light Modulator

Holographic Fabrication of Designed Functional Defect Lines in Photonic Crystal Lattice Using a Spatial Light Modulator

Date: April 1, 2016
Creator: Lutkenhaus, Jeffrey; Lowell, David; George, David; Zhang, Hualiang; Lin, Yuankun & Lin, Yuankun
Description: This article reports the holographic fabrication of designed defect lines in photonic crystal lattices through phase engineering using a spatial light modulator.
Contributing Partner: UNT College of Arts and Sciences
From neural and social cooperation to the global emergence of cognition

From neural and social cooperation to the global emergence of cognition

Date: June 16, 2015
Creator: Grigolini, Paolo; Piccinni, Nicola; Svenkeson, Adam; Pramukkul, Pensri; Lambert, David & West, Bruce J.
Description: This article elaborates on a discussion of the emergence of intelligence via criticality as a consequence of locality breakdown, by using criticality for the foundation of a novel generation of game theory making the local interaction between players yield long-range effects.
Contributing Partner: UNT College of Arts and Sciences
Undistorted 3D microstructures in SU8 formed through two-photon polymerization

Undistorted 3D microstructures in SU8 formed through two-photon polymerization

Date: September 21, 2011
Creator: Ohlinger, Kris; Lin, Yuankun; Poole, Zsolt & Chen, Kevin P.
Description: This article presents the wavelength dependence of two-photon polymerization in SU-8 between 720-780 nm.
Contributing Partner: UNT College of Arts and Sciences
Aperture-based antihydrogen gravity experiment: Parallel plate geometry

Aperture-based antihydrogen gravity experiment: Parallel plate geometry

Date: October 24, 2013
Creator: Rocha, J.R.; Hedlof, R.M. & Ordonez, Carlos A.
Description: This article presents an analytical model and a Monte Carlo simulation of an experiment that could be used to determine the direction of the acceleration of antihydrogen due to gravity.
Contributing Partner: UNT College of Arts and Sciences
FAUST observations of ultraviolet sources in the directions of NGC 4038-39 and 6752

FAUST observations of ultraviolet sources in the directions of NGC 4038-39 and 6752

Date: December 29, 2000
Creator: Daniels, Julian; Brosch, Noah; Almoznino, Elchanan; Shemmer, Ohad; Bowyer, Stuart & Lampton, Michael
Description: This article discusses an analysis of ultraviolet observations with the FAUST shuttle-borne telescope toward the Antennae and NGC 6752 celestial regions resulting in the detection of 46 and 221 candidate sources respectively, for a signal-to-noise ratio of 8.
Contributing Partner: UNT College of Arts and Sciences
Multiwavelength monitoring of the narrow-line Seyfert 1 galaxy Arakelian 564. II. Ultraviolet continuum and emission-line variability

Multiwavelength monitoring of the narrow-line Seyfert 1 galaxy Arakelian 564. II. Ultraviolet continuum and emission-line variability

Date: July 3, 2001
Creator: Collier, S.; Crenshaw, D.M.; Peterson, Bradley M.; Brandt, William Nielsen; Clavel, J.; Edelson, R. et al.
Description: This article presents the results of an intensive 2 month campaign of approximately daily spectrophotometric monitoring of the narrow-line Seyfert 1 galaxy Ark 564 with the Hubble Space Telescope.
Contributing Partner: UNT College of Arts and Sciences
Reverberation Mapping of High-Luminosity Quasars: First Results

Reverberation Mapping of High-Luminosity Quasars: First Results

Date: December 19, 2006
Creator: Kaspi, Shai; Brandt, William Nielsen; Maoz, Dan; Netzer, Hagai; Schneider, Donald P. & Shemmer, Ohad
Description: This article discusses reverberation mapping of quasars of high luminosity or high redshift.
Contributing Partner: UNT College of Arts and Sciences
Complex optical-X-ray correlations in the narrow-line Seyfert 1 galaxy NGC 4051

Complex optical-X-ray correlations in the narrow-line Seyfert 1 galaxy NGC 4051

Date: May 6, 2003
Creator: Shemmer, Ohad; Uttley, P.; Netzer, Hagai & McHardy, I.M.
Description: This article presents the results of a dense and intensive X-ray and optical monitoring of the narrow-line Seyfert 1 galaxy NGC 4051 carried out in 2000.
Contributing Partner: UNT College of Arts and Sciences
Multiwavelength monitoring of the narrow-line Seyfert 1 galaxy Arakelian 564. III. Optical observations and the optical-UV-X-ray connection

Multiwavelength monitoring of the narrow-line Seyfert 1 galaxy Arakelian 564. III. Optical observations and the optical-UV-X-ray connection

Date: July 3, 2001
Creator: Shemmer, Ohad; Romano, P.; Bertram, Ray; Brinkman, Jon; Collier, S.; Crowley, K.A. et al.
Description: This article presents the results of a 2 year long optical monitoring program of the narrow-line Seyfert 1 galaxy Ark 564.
Contributing Partner: UNT College of Arts and Sciences
Supernova 2002ap: the first month

Supernova 2002ap: the first month

Date: March 27, 2002
Creator: Gal-Yam, Avishay; Ofek, Efran & Shemmer, Ohad
Description: This article reports the results of the first month of an intensive photometric and spectroscopic monitoring campaign of Supernova 2002ap.
Contributing Partner: UNT College of Arts and Sciences
The Spectral Energy Distribution and Emission-Line Properties of the Narrow-Line Seyfert 1 Galaxy Arakelian 564

The Spectral Energy Distribution and Emission-Line Properties of the Narrow-Line Seyfert 1 Galaxy Arakelian 564

Date: November 7, 2003
Creator: Romano, P.; Mathur, S.; Turner, T.J.; Kraemer, S.B.; Crenshaw, D.M.; Peterson, Bradley M. et al.
Description: This article presents the intrinsic spectral energy distribution of the narrow-line Seyfert 1 galaxy Ark 564, constructed with contemporaneous data obtained during a multiwavelength, multisatellite observing campaign in 2000 and 2001.
Contributing Partner: UNT College of Arts and Sciences
Reddening, Emission-Line, and Intrinsic Absorption Properties in the Narrow-Line Seyfert 1 Galaxy Arakelian 564

Reddening, Emission-Line, and Intrinsic Absorption Properties in the Narrow-Line Seyfert 1 Galaxy Arakelian 564

Date: October 12, 2001
Creator: Crenshaw, D.M.; Kraemer, S.B.; Turner, T.J.; Collier, S.; Peterson, Bradley M.; Brandt, William Nielsen et al.
Description: This article uses Hubble Space Telescope UV and optical spectra of the narrow-line Seyfert 1 galaxy Ark 564 to investigate its internal reddening and properties of its emission-line and intrinsic UV absorption gas.
Contributing Partner: UNT College of Arts and Sciences
Periodic microvariation of B416, a new luminous blue variable in M33

Periodic microvariation of B416, a new luminous blue variable in M33

Date: September 2, 1999
Creator: Shemmer, Ohad; Leibowitz, E.M. & Szkody, Paula
Description: This article reports optical photometric and spectroscopic observations of the M33 star B416, establishing it as the fifth identified luminous blue variable (LBV) in that galaxy.
Contributing Partner: UNT College of Arts and Sciences
Is There a Metallicity-Luminosity Relationship in Active Galactic Nuclei? The Case of Narrow-Line Seyfert 1 Galaxies

Is There a Metallicity-Luminosity Relationship in Active Galactic Nuclei? The Case of Narrow-Line Seyfert 1 Galaxies

Date: February 8, 2002
Creator: Shemmer, Ohad & Netzer, Hagai
Description: This article discusses the relationship between metallicity and luminosity in active galactic nuclei by introducing new metallicity measurements for a sample of narrow-line Seyfert 1 galaxies.
Contributing Partner: UNT College of Arts and Sciences
The Hard X-Ray Spectral Slope as an Accretion Rate Indicator in Radio-Quiet Active Galactic Nuclei

The Hard X-Ray Spectral Slope as an Accretion Rate Indicator in Radio-Quiet Active Galactic Nuclei

Date: June 14, 2006
Creator: Shemmer, Ohad; Brandt, William Nielsen; Netzer, Hagai; Maiolino, Roberto & Kaspi, Shai
Description: This article presents XMM-Newton observations of two luminous and high accretion rate radio-quiet active galactic nuclei at z ~ 2.
Contributing Partner: UNT College of Arts and Sciences
Erratum: "Is there a metallicity-luminosity relationship in active galactic nuclei? The case of narrow-line Seyfert 1 galaxies"

Erratum: "Is there a metallicity-luminosity relationship in active galactic nuclei? The case of narrow-line Seyfert 1 galaxies"

Date: April 10, 2002
Creator: Shemmer, Ohad & Netzer, Hagai
Description: This erratum corrects a computational error affecting the calculation of the intrinsic luminosities of several objects in the article "Is there a metallicity-luminosity relationship in active galactic nuclei? The case of narrow-line Seyfert 1 galaxies." This does not affect any of the main results of the article.
Contributing Partner: UNT College of Arts and Sciences
Nova Sagittarii 1998 (V4633 Sgr): a permanent superhump system or an asynchronous polar?

Nova Sagittarii 1998 (V4633 Sgr): a permanent superhump system or an asynchronous polar?

Date: August 23, 2001
Creator: Lipkin, Yaacov; Leibowitz, E.M.; Retter, A. & Shemmer, Ohad
Description: This article reports the results of observations of V4633 Sgr (Nova Sagittarii 1998) during 1998-2000.
Contributing Partner: UNT College of Arts and Sciences
Near-Infrared Spectroscopy of High-Redshift Active Galactic Nuclei. I. A Metallicity-Accretion Rate Relationship

Near-Infrared Spectroscopy of High-Redshift Active Galactic Nuclei. I. A Metallicity-Accretion Rate Relationship

Date: June 22, 2004
Creator: Shemmer, Ohad; Netzer, Hagai; Maiolino, Roberto; Oliva, Ernesto; Croom, Scott; Corbett, E. et al.
Description: This article presents near-infrared spectroscopic measurements of the Hβ region for a sample of 29 luminous high-redshift quasars.
Contributing Partner: UNT College of Arts and Sciences
Near-Infrared Spectroscopy of High-Redshift Active Galactic Nuclei. II. Disappearing Narrow-Line Regions and the Role of Accretion

Near-Infrared Spectroscopy of High-Redshift Active Galactic Nuclei. II. Disappearing Narrow-Line Regions and the Role of Accretion

Date: June 22, 2004
Creator: Shemmer, Ohad; Netzer, Hagai; Maiolino, Roberto; Oliva, Ernesto; Croom, Scott; Corbett, E. et al.
Description: This article presents near-infrared spectroscopic measurements of the Hβ region for a sample of 29 luminous high-redshift quasars, and uses the data to discuss the size and other properties of the narrow-line regions in those sources.
Contributing Partner: UNT College of Arts and Sciences
The X-ray Spectral Properties and Variability of Luminous High-Redshift Active Galactic Nuclei

The X-ray Spectral Properties and Variability of Luminous High-Redshift Active Galactic Nuclei

Date: May 20, 2005
Creator: Shemmer, Ohad; Brandt, William Nielsen; Vignali, Christian; Schneider, Donald P.; Fan, Xiaohui; Richards, Gordon T. et al.
Description: This article contains a detailed investigation of moderate- to high-quality X-ray spectra of 10 of the most luminous active galactic nuclei known at z > 4.
Contributing Partner: UNT College of Arts and Sciences
Chandra Observations of the Highest Redshift Quasars from the Sloan Digital Sky Survey

Chandra Observations of the Highest Redshift Quasars from the Sloan Digital Sky Survey

Date: February 17, 2006
Creator: Shemmer, Ohad; Brandt, William Nielsen; Schneider, Donald P.; Fan, Xiaohui; Strauss, Michael A.; Diamond-Stanic, Aleksandar M. et al.
Description: This article presents Chandra observations of 21 z > 4 quasars, including 11 sources at z > 5.
Contributing Partner: UNT College of Arts and Sciences
XMM-Newton spectroscopy of the highly polarized and luminous broad absorption line quasar CSO 755

XMM-Newton spectroscopy of the highly polarized and luminous broad absorption line quasar CSO 755

Date: September 4, 2005
Creator: Shemmer, Ohad; Brandt, William Nielsen; Gallagher, S.C.; Vignali, Christian; Boller, TH.; Chartas, George et al.
Description: This article presents results from the XMM-Newton observations of the highly optically polarized broad absorption line quasar CSO 755.
Contributing Partner: UNT College of Arts and Sciences