Results 81 to 90 of about 1,342 (185)

Circular Differential Scattering Spectroscopy for the Characterization of Single Chiral Nanostructures: Fundamentals, Development, and Perspectives

open access: yesNational Materials, Volume 1, Issue 1, Page 48-71, July 2026.
Circular differential scattering (CDS) spectroscopy relies on a modified dark‐field optical microscope to study single chiral nanostructures, avoiding the averaging effects of ensemble methods. Recently achieving improved detection limits of 1.5%, this robust technique analyzes plasmonic chirality and molecular interactions, with the future goal of ...
Hao Li   +3 more
wiley   +1 more source

Simulations of normal spiral galaxies [PDF]

open access: yesMonthly Notices of the Royal Astronomical Society, 2003
Accepted for publication in: Monthly Notices of the Royal Astron. Soc. The astro-ph copy has a few figures with degraded resolution. A copy with high quality graphics (4281 kb) can be downloaded from the kapteyn institute weg page at http://www.astro.rug.nl (Goto preprints and preprints 2003)
openaire   +2 more sources

A Comprehensive Analysis on the Nature of the Spiral Arms in NGC 3686, NGC 4321, and NGC 2403

open access: yesGalaxies
In theoretical investigations, various mechanisms have been put forward to explain the emergence of spiral patterns in galaxies. One of the few ways to find out the nature of spirals in a particular galaxy is to consider the so-called corotation radius ...
Valeria Kostiuk   +3 more
doaj   +1 more source

Spiral structure in external galaxies [PDF]

open access: yesSymposium - International Astronomical Union, 1970
The need for observing at least four different categories of optical objects for a satisfactory definition of optical spiral structure is emphasized. A sequence of optical form-types for the description of spiral structure is outlined. A pronounced difference in the nature of the spiral structure of the outer and inner parts of Messier 33 is ...
openaire   +1 more source

A Milky Way-like barred spiral galaxy at a redshift of 3. [PDF]

open access: yesNature, 2023
Costantin L   +32 more
europepmc   +1 more source

Magnetic fields in spiral galaxies [PDF]

open access: yesThe Astronomy and Astrophysics Review, 1990
Radio synchrotron emission is a powerful tool to study the strength and structure of magnetic fields in galaxies. Unpolarized synchrotron emission traces isotropic turbulent fields which are strongest in spiral arms and bars (20-30 μG) and in central starburst regions (50-100 μG).
openaire   +5 more sources

Coevolution of Bar and Spiral Arms in TNG50 Simulations Using Information Theory

open access: yesThe Astrophysical Journal
Using Information Theory, we investigate the coevolution of bars and spiral arms in barred-spiral galaxies from the cosmological magnetohydrodynamic Illustris TNG50 simulations. We first calculate Mutual Information (MI) between a structural or kinematic
Anagha A G, Arunima Banerjee
doaj   +1 more source

A Model of a Spiral Galaxy [PDF]

open access: yesMonthly Notices of the Royal Astronomical Society, 1951
McVittie, G. C.   +1 more
openaire   +2 more sources

Revealing the Bifurcations of the Milky Way Spiral Arms Based on Hi-GAL and ATLASGAL Clumps

open access: yesThe Astronomical Journal
The spiral structure of the Milky Way remains under debate. Y. Xu et al. proposed, for the first time, a multiple-arm morphology for our Galaxy, with two spiral arms in the inner disk bifurcating outward alongside additional independent arms in the outer
Deyun Kong   +6 more
doaj   +1 more source

Abstracts

open access: yesMolecular Oncology, Volume 20, Issue S1, Page 1-692, August 2026.
Abstracts submitted to the ‘EACR 2026 Congress: Innovative Cancer Science’, from 08–11 June 2026 and accepted by the Congress Organising Committee are published in this Supplement of Molecular Oncology, an affiliated journal of the European Association for Cancer Research (EACR).
wiley   +1 more source

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