Results 171 to 180 of about 3,407 (289)

Optical Skyrmions with Tunable or Reconfigurable Topology Using Spin‐Decoupled Metaoptics

Laser &Photonics Reviews, EarlyView.
The work introduces advanced optical elements capable of generating and dynamically reconfiguring complex light patterns known as optical skyrmions. By precisely shaping light polarization at the nanoscale, a single engineered metasurface can generate and manipulate robust and tunable polarization textures in an efficient and scalable way.
Andrea Vogliardi, Daniele Bonaldo, Simone Dal Zilio, Vittorio Apolloni, Filippo Romanato, Gianluca Ruffato   +5 more
wiley   +1 more source

A large, long-lived, slowly-expanding superbubble across the Perseus arm. [PDF]

Nat Commun
Chen B, Li G, Yuan H, Xiang M, Zhou J, Chen P, Krause M, Coombs A.   +7 more
europepmc   +1 more source

Polarized thermal emission from dust in a galaxy at redshift 2.6. [PDF]

Nature, 2023
Geach JE, Lopez-Rodriguez E, Doherty MJ, Chen J, Ivison RJ, Bendo GJ, Dye S, Coppin KEK.   +7 more
europepmc   +1 more source

High N/O ratio at high redshift as a result of a strong burst of star formation and differential galactic winds

Context. Recent observations by JWST have revealed supersolar 14N abundances in galaxies at very high redshift. On the other hand, these galaxies show subsolar metallicity.
P. Molaro, F. Matteucci, G. Cescutti, R. Maiolino, F. Rizzuti   +4 more
core   +1 more source

Optical‐to‐Microcomb Stability Transfer for Ultrastable Timing and Microwave/Millimeter‐Wave Generation

Laser &Photonics Reviews, EarlyView.
This work demonstrates a high‐fidelity stability transfer from an optical reference to a high‐repetition‐rate microcomb using a mode‐locked laser bridge. By employing electro‐optic sampling timing detection, femtosecond‐level synchronization and 10−18‐level fractional frequency stability are achieved.
Changmin Ahn, Junyong Choi, Daewon Suk, Hansuek Lee, Jungwon Kim   +4 more
wiley   +1 more source

CONfirm: A Spectacular Galactic Scale MHD Powered Wind in ESO~320-G030

, 2023
Gorski M, Aalto S, König S, Wethers C, Yang C, Onishi K, Falstad N, Barcos-Muñoz L, Combes F, Dìaz-Santos T, Evans A, Gallagher J, Garcia-Burillo S, González-Alfonso E, Harada N, Henkel C, Imanishi M, Linden S, Muller S, Sato M, Mangum J, Martin S, Stanley F, Werf Pvd, Viti S, Wada K.   +25 more
europepmc   +1 more source

The contribution of winds from star clusters to the Galactic cosmic-ray population

International audienceCosmic rays (CR) are energetic nuclei that permeate the entire Galactic disk. Their existence requires the presence of powerful particle accelerators.
Peron, G. ; https://orcid.org/, Casanova, Sabrina, Baghmanyan, Vardan, Aharonian, F. ; https://orcid.org/, Aharonian, Felix, Casanova, S., Peron, Giada, Baghmanyan, V., Gabici, Stefano, Gabici, S.   +9 more
core   +1 more source

Epitaxial Integration of III–V Membrane Photodetectors With Lateral p–i–n Junctions on the Silicon‐On‐Insulator Waveguide Platform

Laser &Photonics Reviews, EarlyView.
Epitaxial growth forms III–V membranes directly atop the silicon waveguide layer on SOI, while in‐plane in situ doping defines lateral p–i–n InP/InGaAs junctions in a single growth step. The membrane photodetectors achieve 50 Gb/s NRZ‐OOK operation.
Zhao Yan, Yifu Chen, Martin Ebert, Ka Ming Wong, Wenjie Wang, Tim Grieb, Florian F. Krause, Andreas Rosenauer, Graham T. Reed, David J. Thomson, Qiang Li   +10 more
wiley   +1 more source

A cosmic-ray loaded nascent outflow driven by a massive star cluster. [PDF]

Nat Commun
Lemoine-Goumard M, Härer L, Mohrmann L, Bernet R, Hinton J, Peron G, Reville B, Tibaldo L, Vieu T.   +8 more
europepmc   +1 more source

LHAASO and Galactic cosmic rays. [PDF]

Innovation (Camb), 2022
Yang R.
europepmc   +1 more source