Results 21 to 30 of about 3,651,668 (354)

In Situ Spectroscopic Analysis of the Carbothermal Reduction Process of Iron Oxides during Microwave Irradiation

open access: yesMetals, 2018
The effects of microwave plasma induction and reduction on the promotion of the carbothermal reduction of iron oxides (α-Fe2O3, γ-Fe2O3, and Fe3O4) are investigated using in situ emission spectroscopy measurements during 2.45 GHz microwave processing ...
Jun Fukushima, Hirotsugu Takizawa
doaj   +1 more source

The Binary Neutron Star Event LIGO/Virgo GW170817 160 Days after Merger: Synchrotron Emission across the Electromagnetic Spectrum [PDF]

open access: yes, 2018
We report deep Chandra X-ray Observatory (CXO), Hubble Space Telescope (HST), and Karl J. Jansky Very Large Array (VLA) observations of the binary neutron star event GW170817 at t < 160 days after merger.
R. Margutti   +19 more
semanticscholar   +1 more source

Real-time emission spectrum from a hybrid atom-optomechanical cavity [PDF]

open access: yes, 2015
We theoretically investigate the real-time emission spectrum of a two-level atom coupled to an optomechanical cavity (OMC). Using the quantum trajectory approach, we obtain the single-photon time-dependent spectrum in this hybrid system where the ...
I. Mirza
semanticscholar   +1 more source

InPBi Quantum Dots for Super-Luminescence Diodes

open access: yesNanomaterials, 2018
InPBi thin film has shown ultra-broad room temperature photoluminescence, which is promising for applications in super-luminescent diodes (SLDs) but met problems with low light emission efficiency.
Liyao Zhang   +4 more
doaj   +1 more source

Investigation of Er3+-Doped Phosphate Glass for L+ Band Optical Amplification

open access: yesIEEE Photonics Journal, 2021
In this work, Er3+-doped phosphate glass with good flatness of the emission spectrum of the L+ band was prepared by optimizing the content of BaO. The absorption and emission spectra were measured.
Xiao Shen   +5 more
doaj   +1 more source

DETECTION OF AN UNIDENTIFIED EMISSION LINE IN THE STACKED X-RAY SPECTRUM OF GALAXY CLUSTERS [PDF]

open access: yes, 2014
We detect a weak unidentified emission line at E = (3.55–3.57) ± 0.03 keV in a stacked XMM-Newton spectrum of 73 galaxy clusters spanning a redshift range 0.01–0.35. When the full sample is divided into three subsamples (Perseus, Centaurus+Ophiuchus+Coma,
E. Bulbul   +5 more
semanticscholar   +1 more source

CIGALE: a python Code Investigating GALaxy Emission [PDF]

open access: yesAstronomy & Astrophysics, 2018
Context. Measuring how the physical properties of galaxies change across cosmic times is essential to understand galaxy formation and evolution. With the advent of numerous ground-based and space-borne instruments launched over the past few decades we ...
M. Boquien   +7 more
semanticscholar   +1 more source

Catalogue of emission lines in the spectrum of the comet C/2004 Q2 (Machholz) on 15 January, 2004

open access: yesВісник Астрономічної школи, 2013
Idetified the emission lines in the spectrum of comet C/2004 Q2 (MACHHOLZ), obtained in the region λλ4760÷6580ÅÅ on 15 January, 2005 with the 2-meter telescope of Shamakha AO of NAS of Azerbaijan.
Kh. M. Mikailov   +3 more
doaj   +1 more source

The Energy Spectrum of the Acoustic Emission Signals of Nanoscale Objects [PDF]

open access: yesЖурнал нано- та електронної фізики, 2017
A one-dimensional discrete-continuum model of the energy spectrum of the acoustic emission signal, allowing filter oscillating components of the acoustic emission signals.
V.V. Marasanov, A.A. Sharko
doaj   +1 more source

On the integrated continuum radio spectrum of supernova remnant W44 (G34.7-0.4): New insights from Planck [PDF]

open access: yesSerbian Astronomical Journal, 2015
In this paper, the integrated continuum radio spectrum of supernova remnant (SNR) W44 was analyzed up to 70 GHz, testing the different emission models that can be responsible for its particular shape.
Onić D.
doaj   +1 more source

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