Results 131 to 140 of about 64,304 (283)
Photo-z Estimation with Normalizing Flow
The Astrophysical JournalAccurate photometric redshift (photo- z ) estimation is a key challenge in cosmology, as uncertainties in photo- z directly limit the scientific return of large-scale structure and weak lensing studies, especially in upcoming Stage IV surveys.
Yiming Ren +8 more
doaj +1 more source
Substituent Effects on Cyanine Dyes Vary with Position and Chain Length
Advanced Optical Materials, EarlyView.In cyanines, substituent effects vary as a function of substituent position and cyanine length. Electron‐donating‐ and ‐withdrawing groups at meso‐ and α‐positions of 4n+1/4n−1 long cyanines (n = 1, 2, 3…) cause opposing, hypsochromic and bathochromic shifts of the 1st UV–vis absorption bands.
David Dunlop +2 more
wiley +1 more source
The Intracluster Light Analysis of the Most Evolved Systems of Galaxies: Fossil Groups
The Astrophysical Journal LettersWe present the analysis of the intracluster light (ICL) in three fossil groups, RX J085640.72+055347.36, RX J1136+0713, and RX J1410+4145, at z ∼ 0.1. We used two optical broadband filters, F435W and F606W, observed with the Hubble Space Telescope, and ...
Nícolas O. L. de Oliveira +9 more
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Voids in Galaxy Redshift Surveys
, 2001 To appear in 'Where is the Matter', Eds M Trayer & L ...
Hoyle, Fiona, Vogeley, Michael S
openaire +2 more sources
Advanced Optical Materials, EarlyView.Whispering‐gallery‐mode microresonators with sharp resonant peaks enable photonic barcoding. Similar to a chameleon, a rare‐earth‐free microcavity with π‐conjugated PAHs enables visibleto‐near infrared color generation from a single microbead. The unique resonat emission (spectral barcode) can be dynamically transformed via excitation wavelength change,
Barun Kumar Barman +6 more
wiley +1 more source
Advanced Optical Materials, EarlyView.An organic–inorganic mixed excited state is designed and demonstrated by combining the metal–metal and π–π interactions within a supramolecular Pt2–pyrene assembly. Directional orbital overlap between the Pt and carbon atoms gives rise to a long‐lived triplet emission, strong emission polarization, exciton–exciton annihilation, and efficient exciton ...
Ying Luo +7 more
wiley +1 more source
Spatially Resolved Modeling of Galactic Hα Emission for Galaxy Clustering
The Astrophysical JournalNear-infrared spectroscopic surveys target high-redshift emission-line galaxies (ELGs) to probe cosmological scenarios. Understanding the clustering properties of ELGs is essential to derive optimal constraints.
Ivan Rapoport +4 more
doaj +1 more source
Optimising the sample selection for photometric galaxy surveys
Astronomy & AstrophysicsContext. Determining cosmological parameters with high precision, as well as resolving current tensions in their values derived from low- and high-redshift probes, is one of the main objectives of the new generation of cosmological surveys.
Alemany-Gotor M. +2 more
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Advanced Optical Materials, EarlyView.It is demonstrated that in chiral ferroelectric nematic liquid crystals sandwiched between electrically conducting transparent plates, the reflection color can be reversibly tuned by electric fields applied along the helix axis. The proposed theoretical model, assuming field‐induced coiling of the helix axis, accounts for all observations.
Md Sakhawat Hossain Himel +5 more
wiley +1 more source
A test for the redshift dependence of $$\sigma _8$$ σ 8 using $$f\sigma _8$$ f σ 8 measurements
European Physical Journal C: Particles and FieldsWe search for a redshift dependence of $$\sigma _8^0$$ σ 8 0 using 23 growth rate measurements from redshift space distortions and peculiar velocity measurements as a consistency check of $$\Lambda $$ Λ CDM.
Siddhant Manna, Shantanu Desai
doaj +1 more source