Results 21 to 30 of about 21,384 (312)
Photonics, 2022 A novel AlGaInAs/InP electro-absorption modulated laser (EML) with a simple fabrication process is proposed, in which the electro-absorption modulator (EAM) has a 10 nm blueshift induced by quantum well intermixing (QWI) and is monolithically integrated ...
Xiao Sun +12 more
doaj +1 more source
Unusual Temperature Dependence of Bandgap in 2D Inorganic Lead‐Halide Perovskite Nanoplatelets
Advanced Science, 2021 Understanding the origin of temperature‐dependent bandgap in inorganic lead‐halide perovskites is essential and important for their applications in photovoltaics and optoelectronics.
Shaohua Yu +8 more
doaj +1 more source
Variability of stellar granulation and convective blueshift with spectral type and magnetic activity. I. K and G main sequence stars [PDF]
, 2016 In solar-type stars, the attenuation of convective blueshift by stellar magnetic activity dominates the RV variations over the low amplitude signal induced by low mass planets. Models of stars that differ from the Sun will require a good knowledge of the
Alex, M. +5 more
core +3 more sources
Magneto-optical study of thermally annealed InAs-InGaAs-GaAs self-assembled quantum dots [PDF]
, 2009 We report a magneto-optical study of InAs-InGaAs-GaAs self-assembled quantum dots (QDs) subjected to post-growth thermal annealing at different temperatures.
Bimberg D. +7 more
core +1 more source
Blueshift without blueshift: Red hole gamma-ray burst models explain the peak energy distribution [PDF]
AIP Conference Proceedings, 2000 Gamma-ray bursts are still a puzzle. In particular, the central engine, the total energy and the very narrow distribution of peak energies challenge model builders. We consider here an extreme model of gamma-ray bursts based on highly red- and blue-shifted positron annihilation radiation.
openaire +2 more sources
Vanishing absorption and blueshifted emission in FeLoBAL quasars [PDF]
Monthly Notices of the Royal Astronomical Society, 2016 We study the dramatic decrease in iron absorption strength in the iron low-ionization broad absorption line quasar SDSS J084133.15+200525.8. We report on the continued weakening of absorption in the prototype of this class of variable broad absorption line quasar, FBQS J140806.2+305448.
Rafiee, Alireza +5 more
openaire +2 more sources
Maximum observable blueshift from circular equatorial Kerr orbiters [PDF]
Physical Review D, 2020 The region of spacetime near the event horizon of a black hole can be viewed as a deep potential well at large gravitational redshift relative to distant observers. However, matter orbiting in this region travels at relativistic speeds and can impart a significant Doppler shift to its electromagnetic emission, sometimes resulting in a net observed ...
Delilah E. A. Gates +2 more
openaire +2 more sources
Green Processing and Synthesis, 2019 Synthesis of nanoparticles (NPs) using plant extracts has been suggested as an environmentally friendly alternative to chemical synthesis of semiconductor NPs.
Singh Jagpreet +4 more
doaj +1 more source
Redshift/blueshift Inside the Schwarzschild Black Hole [PDF]
General Relativity and Gravitation, 2020 We consider an observer who moves under the horizon of the Schwarzschild black hole and absorbs a photon. There are two different situations when (i) a photon comes from infinity, (ii) it is emitted by another observer under the horizon (say, by a surface of a collapsing star).
openaire +2 more sources
Blueshifts in the Lemaître-Tolman models [PDF]
Physical Review D, 2014 13 pages, 12 figures; axis labels added in all figures, new paragraph added after (2.16), Ref.
openaire +2 more sources