Results 21 to 30 of about 516 (169)
Chirality in Light–Matter Interaction
Advanced Materials, Volume 35, Issue 34, August 24, 2023., 2023 Recent advances in nanofabricated optical metamaterials designed to enhance the interaction between optical and structural chirality are explored, focusing on the role of chirality in biological systems and its use in current biosensing applications.
Andrew Lininger +6 more
wiley +1 more source
On the origin of de‐polarization in CB54
Astronomische Nachrichten, Volume 344, Issue 5, June 2023., 2023 Abstract We present polarimetric observations of the Bok globule CB54 in the far‐infrared via SOFIA/HAWC+ bands D (154 μ$$ \mu $$m) and E (214 μ$$ \mu $$m). We detect polarization with mean polarization degrees of p154 μm‾=7.7 %$$ \overline{p_{154\;\upmu \mathrm{m}}}=7.7\% $$ ±$$ \pm $$ 5.4%$$ \% $$ and p214 μm‾=8.5 %$$ \overline{p_{214\;\upmu \mathrm ...
Niko Zielinski +2 more
wiley +1 more source
Multiwavelength astrophysics of the blazar OJ 287 and the project MOMO
Astronomische Nachrichten, Volume 344, Issue 4, May 2023., 2023 Abstract We are carrying out the densest and longest multiyear, multiwavelength monitoring project of OJ 287 ever done. The project MOMO (Multiwavelength Observations and Modeling of OJ 287) covers wavelengths from the radio to the high‐energy regime. A few selected observations are simultaneous with those of the Event Horizon Telescope (EHT).
S. Komossa +21 more
wiley +1 more source
DIBs, Interstellar Dust, and Extinction [PDF]
Proceedings of the International Astronomical Union, 2013 AbstractThe relationship between DIBs and dust is still unknown. The correlation between reddening and DIB strength means that the DIBs are mixed in with the dust and gas in interstellar clouds. The DIBs are relatively stronger in the diffuse interstellar medium than in dense clouds.
openaire +1 more source
A persistent influence of supernovae on biodiversity over the Phanerozoic
Ecology and Evolution, Volume 13, Issue 3, March 2023., 2023 It shows the correlation between diversity and supernovae frequency. Abstract It is an open question what has constrained macroevolutionary changes in marine animal diversity on the time scale of the Phanerozoic. Here, we will show that supernovae appear to have significantly influenced the biodiversity of life.
Henrik Svensmark
wiley +1 more source
The Astrophysical Journal, 2023 The 3D extinction and structure are studied for the Taurus, Orion, Perseus, and California molecular clouds based on the LAMOST spectroscopy. Stellar color excess is calculated with the intrinsic color index derived from the atmospheric parameters in the
ZheTai Cao +3 more
doaj +1 more source
The Astrophysical Journal, 2023 Interstellar-dust extinction law is essential for interpreting observations. In this work, we investigate the ultraviolet (UV)–mid-infrared (IR) extinction law of the Taurus molecular cloud and its possible variations. We select 504,988 dwarf stars (4200
Ling Li +3 more
doaj +1 more source
Atti della Accademia Peloritana dei Pericolanti : Classe di Scienze Fisiche, Matematiche e Naturali, 2011 We present a model for interstellar extinction dust, in which we assume a bimodal distribution of extinction carriers, a dispersion of core-mantle grains, supplemented by a collection of PAHs in free molecular form.
C. Cecchi-Pestellini +7 more
doaj +1 more source
NEW ULTRAVIOLET EXTINCTION CURVES FOR INTERSTELLAR DUST IN M31
The Astrophysical Journal, 2015 ApJ, in press, 9 pages, 5 ...
Geoffrey C. Clayton +6 more
openaire +4 more sources
The nature of interstellar dust as revealed by light scattering
Atti della Accademia Peloritana dei Pericolanti : Classe di Scienze Fisiche, Matematiche e Naturali, 2011 Interstellar dust was first identified through the extinction that it causes of optical starlight. Initially, observational and theoretical studies of extinction were made to identify simple ways of removing the effect of extinction.
D. A. Williams
doaj +1 more source