Results 51 to 60 of about 44,335 (276)

Mapping Nanoscale Buckling in Atomically Thin Cr2Ge2Te6

Advanced Functional Materials, EarlyView.
Atomic‐resolution STEM is used to resolve nanoscale buckling in monolayer Cr2Ge2Te₆. A noise‐robust image analysis reconstructs three‐dimensional lattice distortions from single plan‐view images, revealing pronounced defect‐driven nm‐scale out‐of‐plane buckling.
Amy Carl, Nicholas Clark, David G. Hopkinson, Matthew Hamer, Matthew Watson, Laxman Nagireddy, James E. Nunn, Alexei Barinov, Yichao Zou, William Thornley, Casey Cheung, Wendong Wang, Sam Sullivan‐Allsop, Xiao Li, Astrid Weston, Eli G. Castanon, Andrey V Kretinin, Cephise Cacho, Neil R. Wilson, Sarah J. Haigh, Roman Gorbachev   +20 more
wiley   +1 more source

The Inner 2 pc of Sagittarius A*: Simulations of the Circumnuclear Disk and Multiphase Gas Accretion in the Galactic Center

The Astrophysical Journal, 2023
The inner few parsecs of the Milky Way’s Galactic center contain the central accreting supermassive black hole, over a million stars, and multiple large gaseous structures.
Siddhant Solanki, Sean M. Ressler, Lena Murchikova, James M. Stone, Mark R. Morris   +4 more
doaj   +1 more source

The fate of heavy elements in dwarf galaxies - the role of mass and geometry

, 2013
Energetic feedback from Supernovae and stellar winds can drive galactic winds. Dwarf galaxies, due to their shallower potential wells, are assumed to be more vulnerable to this phenomenon.
Hensler, G., Recchi, S.
core   +1 more source

Harnessing the Orientation of Columnar Discotic Liquid Crystals for Narrowband Blue Emission with Enhanced Out‐Coupling Efficiency Toward Improvement of SP‐OLEDs Performance

Advanced Functional Materials, EarlyView.
Solution‐processed OLEDs containing discotic liquid‐crystalline MR‐TADF emitters are reported. Supramolecular self‐assembly induces homeotropic columnar alignment, enforcing preferential horizontal orientation of the emitter transition dipole moment in spin‐coated films, which leads to an enhancement in the device light outcoupling efficiency while ...
Joydip De, Abhishek Kumar Gupta, Džiugas Litvinas, Francisco Tenopala‐Carmona, Matthias Lehmann, Malte C. Gather, Eli Zysman‐Colman   +6 more
wiley   +1 more source

Evidence for a Fast Soft X-Ray Wind in M82 from XMM-RGS

The Astrophysical Journal
Starburst wind models predict that metals and energy are primarily carried out of the disk by hot gas ( T > 10 ^6 K), but the low energy resolution of X-ray CCD observations results in large uncertainties on the mass and energy loading.
Erin Boettcher, Edmund Hodges-Kluck
doaj   +1 more source

Uncovering the Origin of Efficiency Roll‐Off in TADF OLEDs

Advanced Functional Materials, EarlyView.
OLEDs based on thermally activated delayed fluorescent (TADF) materials often suffer from a severe drop in efficiency at high brightness levels. This work presents a technique to uncover the source of this efficiency drop, and quantifies the exciton‐exciton and exciton‐polaron annihilation processes responsible for efficiency losses in our TADF OLEDs ...
Liam G. King, Kou Yoshida, Arvydas Ruseckas, Ifor D. W. Samuel   +3 more
wiley   +1 more source

Hot Gas Outflow Properties of the Starburst Galaxy NGC 4945

The Astrophysical Journal
We analyze 330 ks of Chandra X-ray imaging and spectra of the nearby, edge-on starburst and Seyfert type 2 galaxy NGC 4945 to measure the hot gas properties along the galactic outflows. We extract and model spectra from 15 regions extending from −0.55 to
Natalia Porraz Barrera, Sebastian Lopez, Laura A. Lopez, Adi Foord, Dustin D. Nguyen, Todd A. Thompson, Smita Mathur, Alberto D. Bolatto   +7 more
doaj   +1 more source

Damping of Alfvén Waves in MHD Turbulence and Implications for Cosmic Ray Streaming Instability and Galactic Winds

Frontiers in Physics, 2022
Alfvénic component of MHD turbulence damps Alfvénic waves. The consequences of this effect are important for many processes, from cosmic ray (CR) propagation to launching outflows and winds in galaxies and other magnetized systems.
Alex Lazarian, Alex Lazarian, Siyao Xu
doaj   +1 more source

The physics of galactic winds driven by active galactic nuclei

, 2012
Active galactic nuclei (AGN) drive fast winds in the interstellar medium of their host galaxies. It is commonly assumed that the high ambient densities and intense radiation fields in galactic nuclei imply short cooling times, thus making the outflows ...
Abbott, Alexander, Baum, Bautista, Beck, Berger, Bland-Hawthorn, Blandford, Blandford, Booth, Braito, Chang, Chartas, Cioffi, Ciotti, Ciotti, Claude-André Faucher-Giguère, Creasey, Dai, DeBuhr, DeBuhr, Di Matteo, Dobler, Downes, Dunn, Durier, Eliot Quataert, Emmering, Falle, Ferrarese, Feruglio, Fischer, France, Fu, Gallimore, Gebhardt, Ghavamian, Gibson, Greene, Greene, Gültekin, Hainline, Hopkins, Hopkins, Hutchings, Kay, King, King, King, King, Konigl, Koo, Koo, Lacki, Lacki, Lacki, Levin, Markevitch, McKee, Mihos, Moe, Murray, Murray, Narayan, Ostriker, Paumard, Pounds, Pounds, Proga, Rees, Riquelme, Risaliti, Rupke, Saitoh, Sanders, Sazonov, Sazonov, Sazonov, Schwartz, Scoville, Sijacki, Silk, Silk, Spitzer, Springel, Sturm, Su, Thompson, Thompson, Tombesi, Treister, Tremaine, Tremonti, Tripp, Turnshek, Ulvestad, Veilleux, Weaver, Weymann, Weymann, Wyithe   +100 more
core   +1 more source

Galactic Centre stellar winds and Sgr A* accretion [PDF]

, 2005
(ABRIDGED) We present in detail our new 3D numerical models for the accretion of stellar winds on to Sgr A*. In our most sophisticated models, we put stars on realistic orbits around Sgr A*, include `slow' winds (300 km/s), and account for radiative ...
Cuadra, J., Di Matteo, T., Nayakshin, S., Springel, V.   +3 more
core   +2 more sources