Results 91 to 100 of about 17,725 (236)
Measuring CMB polarisation with the Planck HFI
We describe the Planck HFI design and expected performances for measuring CMB polarisation.Comment: Proceedings of the Pol2001 "Astrophysical Polarised Backgrounds" conference, Bologna, 9-12 october ...
J. Delabrouille, J. Kaplan, null null
core +3 more sources
XIPE: the X-ray Imaging Polarimetry Explorer [PDF]
X-ray polarimetry, sometimes alone, and sometimes coupled to spectral and temporal variability measurements and to imaging, allows a wealth of physical phenomena in astrophysics to be studied.
Aloisio, Roberto +99 more
core +2 more sources
A new zinc hybrid guanidine catalyst [Zn{(R,R)TMGNMe2(1,2)ch}2](OTf)2 (C1) shows very high catalytic activity in the polymerization of cyclic esters and in the depolymerization of these polyesters. Using C1 in the ring‐opening polymerization of lactide and caprolactone under industrially relevant conditions, astonishing rate constants of the same order
Tabea Becker +8 more
wiley +1 more source
Stellar Polarimetry: Where Are We and Where Are We Going?
On the final day of the Stellar Polarimetry conference, participants split up into three "breakout sessions" to discuss the future of the field in the areas of instrumentation, upcoming opportunities, and community priorities.
Brown, John C. +4 more
core +1 more source
Waveguide metacouplers for in-plane polarimetry [PDF]
The state of polarization (SOP) is an inherent property of the vectorial nature of light and a crucial parameter in a wide range of remote sensing applications. Nevertheless, the SOP is rather cumbersome to probe experimentally, as conventional detectors
Bozhevolnyi, Sergey I., Pors, Anders
core +2 more sources
Fine tuning method for optimization of liquid crystal based polarimeters.
Liquid crystal variable retarders (LCVR) based polarimeters perform temporal polarization modulation by applying a sequence of driving voltages to introduce different optical retardances.
A. Álvarez-Herrero +2 more
semanticscholar +1 more source
New Compounds From the Deep‐sea Sponge Mycale lingua
The focus of this study is the scarcely investigated sponge Mycale lingua, found commonly in the North Atlantic Ocean. In total, four compounds are isolated and characterised from three combined M. lingua individuals. Structures are fully elucidated through HR‐LCMS and NMR spectroscopy (1H, COSY, HSQC, HMBC).
H. Poppy Clark +8 more
wiley +1 more source
Spectral Polarimetric Observations of the Sun by the VIRAC RT-32 Radio Telescope: First Results
The article describes microwave observations of the Sun with the radio telescope RT-32 of the Ventspils International Radio Astronomy Center. The observations were performed using a multichannel spectral polarimeter for the 6.3–9.4 GHz frequency range. A
Bezrukov D.
doaj +1 more source
Broadband Circular Polarizers Constructed by Helix-like Chiral Metamaterials
In this paper, a kind of helix-like chiral metamaterial, which can be realized with multiple conventional lithography or electron beam lithographic techniques, is proposed to achieve broadband bianisotropic optical response analogous to helical ...
Chen, Xiaoshuang +4 more
core +1 more source
Submillimeter Polarimetry with PolKa, a reflection-type modulator for the APEX telescope [PDF]
Imaging polarimetry is an important tool for the study of cosmic magnetic fields. In our Galaxy, polarization levels of a few up to $\sim$10\% are measured in the submillimeter dust emission from molecular clouds and in the synchrotron emission from ...
Güsten, Rolf +8 more
core +2 more sources

