Dynamic Chiral Plasmonic Systems‐Based on Spiropyran Derivatives and Gold Nanorods
Advanced Materials Interfaces, Volume 12, Issue 23, December 8, 2025.Soft chiral plasmonic nanocomposites are prepared by embedding gold nanorods into spiropyran‐based supramolecular gels. The system self‐assembles into helical structures, enabling plasmonic circular dichroism. When illuminated with UV light spiropyran–merocyanine isomerization occurs, inducing reversible nanoscale reorganization and modulation of the ...
Ewelina Tomczyk +4 more
wiley +1 more source
Extra-planar gas in the spiral galaxy NGC 4559 [PDF]
, 2005 We present 21-cm line observations of the spiral galaxy NGC4559, made with the Westerbork Synthesis Radio Telescope. We have used them to study the HI distribution and kinematics, the relative amount and distribution of luminous and dark matter in this ...
C. Barbieri +9 more
semanticscholar +1 more source
The possible evolution of pitch angles of spiral galaxies [PDF]
, 2023 В. П. Решетников +4 more
openalex +1 more source
The Stochastic‐Dissipative Störmer Problem‐Trajectories and Radiation Patterns
Annalen der Physik, Volume 537, Issue 12, December 2025.We consider charged particle motion and radiation in a dipole magnetic field, in the presence of friction and of stochastic forces. The numerical solutions of the Langevin equation reveal how these forces modify the complex dynamics of particles, and they offer some new insights into the nonlinear processes relevant to planetary radiation belts ...
Tiberiu Harko, Gabriela Raluca Mocanu
wiley +1 more source
Revealing the Bifurcations of the Milky Way Spiral Arms Based on Hi-GAL and ATLASGAL Clumps
The Astronomical JournalThe 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
THE ELLIPTICITIES OF GALAXIES IN GALAXY CLUSTERS OF DIFFERENT MORPHOLOGICAL TYPE
Odessa Astronomical Publications, 2014 The distribution of galaxy ellipticities was analyzed for 207 rich PF galaxy clusters found in the Munster Red Sky Survey Galaxy Catalogue. Clusters with BM types from a comparison with the ACO catalogue were also classified on the new scheme.
E. A. Panko, P. Flin
doaj +1 more source
Dense Molecular Gas Associated with the Circumnuclear Star-forming Ring in the Barred Spiral Galaxy NGC 6951 [PDF]
, 1998 We present high-resolution (3''-5'') observations of CO (1-0) and HCN (1-0) emission from the circumnuclear star-forming ring in the barred spiral galaxy NGC 6951, a host of a type 2 Seyfert nucleus, using the Nobeyama Millimeter Array and the Nobeyama ...
K. Kohno, R. Kawabe, B. Vila-Vilaro
semanticscholar +1 more source
Magnetic-Field Vector Maps of Nearby Spiral Galaxies
Galaxies, 2019 We present a method for determining the directions of magnetic-field vectors in a spiral galaxy using two synchrotron polarization maps, an optical image, and a velocity field.
Hiroyuki Nakanishi +2 more
doaj +1 more source
A Milky Way-like barred spiral galaxy at a redshift of 3. [PDF]
Nature, 2023 Costantin L +32 more
europepmc +1 more source
Surface Photometry of Spiral Galaxy NGC 5005 and Elliptical Galaxy NGC 4278
مجلة بغداد للعلوم, 2018 Two galaxies have been chosen, spiral galaxy NGC 5005 and elliptical galaxy NGC 4278 to study their photometric properties by using surface photometric techniques with griz-Filters. Observations are obtained from the Sloan Digital Sky Survey (SDSS).
Baghdad Science Journal
doaj +1 more source