Results 41 to 50 of about 409,231 (284)

The LyAlpha Line Profiles of Ultraluminous Infrared Galaxies: Fast Winds and Lyman Continuum Leakage

, 2015
We present new Hubble Space Telescope Cosmic Origins Spectrograph far-ultraviolet (far-UV) spectroscopy and Keck Echellete optical spectroscopy of 11 ultraluminous infrared galaxies (ULIRGs), a rare population of local galaxies experiencing massive gas ...
Danforth, Charles W., Dijkstra, Mark, Henry, Alaina, Martin, Crystal L., Soto, Kurt T., Wong, Joseph   +5 more
core   +1 more source

Surface acoustic wave modulation of single photon emission from GaN/InGaN nanowire quantum dots [PDF]

, 2018
On-chip quantum information processing requires controllable quantum light sources that can be operated on-demand at high-speeds and with the possibility of in-situ control of the photon emission wavelength and its optical polarization properties.
Chernysheva, E., Hernández-Mínguez, A., Lazic, S., Santos, P. V., van der Meulen, H. P.   +4 more
core   +2 more sources

Evaluation of the Potential of Laser Shock Peening Compared with Cold Expansion for Improving Fatigue Resistance of Riveted Lap Joints of Aerospace Grade 7175 Al Alloy

Advanced Engineering Materials, EarlyView.
This study investigates laser shock peening for enhancing fatigue performance of riveted aerospace aluminum joints. A comparative approach with cold expansion combines fatigue testing and synchrotron X‐ray methods. Integrating mechanical testing with residual stress and strain characterization provides insights into how different treatments affect the ...
Ogün Baris Tapar, David Osman Busse, Maximilian Sprengel, Domenico Furfari, Marc‐André Nielsen, Guilherme Abreu Faria, Jérémy Epp   +6 more
wiley   +1 more source

Variability of the coronal line region in NGC 4151 [PDF]

, 2015
We present the first extensive study of the coronal line variability in an active galaxy. Our data set for the nearby source NGC 4151 consists of six epochs of quasi-simultaneous optical and near-infrared spectroscopy spanning a period of about eight ...
Ferland, Gary J., Landt, Hermine, Steenbrugge, Katrien C., Ward, Martin J.   +3 more
core   +7 more sources

Combined experimental and TD-DFT/DMOl3 investigations, optical properties, and photoluminescence behavior of a thiazolopyrimidine derivative

Scientific Reports, 2022
We present here the FT-IR, DFT computation, XRD, optical, and photophysical characterization of a heterocyclic compound with thienopyrimidine and pyran moieties.
Amina A. Abozeed, Osama Younis, Ahmed F. Al-Hossainy, Nada Abd El-Mawla, Mostafa Sayed, Adel M. Kamal El-dean, Mahmoud S. Tolba   +6 more
doaj   +1 more source

Direct Measurements of the Stellar Continua and Balmer/4000 Angstrom Breaks of Red z>2 Galaxies: Redshifts and Improved Constraints on Stellar Populations

, 2006
We use near-infrared (NIR) spectroscopy obtained with GNIRS on Gemini, NIRSPEC on KECK, and ISAAC on the VLT to study the rest-frame optical continua of three `Distant Red Galaxies' (having Js - Ks > 2.3) at z>2.
Danilo Marchesini, Eric Gawiser, Garth D. Illingworth, Gregory Rudnick, Hans‐Walter Rix, Ivo Labbe, Madau P., Marijn Franx, Mariska Kriek, Natascha M. Forster Schreiber, Paul van der Werf, Pieter G. van Dokkum, Ryan Quadri, Stijn Wuyts, Sune Toft   +14 more
core   +1 more source

Spectroscopy of Broad Line Blazars from 1LAC [PDF]

, 2012
We report on optical spectroscopy of 165 Flat Spectrum Radio Quasars (FSRQs) in the Fermi 1LAC sample, which have helped allow a nearly complete study of this population.
Abdo, Abdo, Abdo, Ajello, Anthony C. S. Readhead, Appenzeller, Atwood, Bohlin, Buzzoni, Dekker, Garret Cotter, Greene, Healey, Joseph L. Richards, Kong, Michael S. Shaw, Oliver G. King, Peter F. Michelson, Richards, Richards, Roger W. Romani, Salviander, Schlegel, Schneider, Shen, Stephen E. Healey, Szokoly, Tody, Valdes, Valdes, Vestergaard, Vestergaard, Vestergaard, Walter Max-Moerbeck, William J. Potter   +34 more
core   +2 more sources

Duplex Stainless Steel Laser‐Surface Textured: Stability in Brine Solution

Advanced Engineering Materials, EarlyView.
Controlled laser‐surface treatment (LST) of duplex DSS2205 steel is performed to increase its stability in brine solution under cyclic electrochemical assays. The superior protection with respect to flat and smooth panels is attributed to the presence of FeCr2O4 as the main protective oxide layer in the LST surface, after corrosion tests. The stability
Mohammad Rezayat, Hamidreza Enshaei, Elaine Armelin, José I. Iribarren, Antonio Mateo, Miguel Morales   +5 more
wiley   +1 more source

Novel ceramic Gd3M2Al3O12: M=Ce+3, Fe+3:Optical properties and potential applications

Chemical Physics Impact
Garnets are becoming popular for improving photonic device efficiency due to their chemical and physical stability, making them ideal for electronics, optics, and material science.
Dewasthali Tejaswi Ramchandra, Suman Rani   +1 more
doaj   +1 more source

Surface Effects and Optical Properties of Self-Assembled Nanostructured a-Si:Al

Nanomaterials, 2019
We present a study of the surface effects and optical properties of the self-assembled nanostructures comprised of vertically aligned 5 nm-diameter Al nanowires embedded in an amorphous Si matrix (a-Si:Al).
Torunn Kjeldstad, Annett Thøgersen, Marit Stange, Ingvild Thue Jensen, Eduard Monakhov, Augustinas Galeckas   +5 more
doaj   +1 more source