Results 31 to 40 of about 17,725 (236)

Instrumentation and Future Missions in the Upcoming Era of X-ray Polarimetry

open access: yesGalaxies, 2018
The maturity of current detectors based on technologies that range from solid state to gases renewed the interest for X-ray polarimetry, raising the enthusiasm of a wide scientific community to improve the performance of polarimeters as well as to ...
Sergio Fabiani
doaj   +1 more source

An All-Dielectric Metasurface Polarimeter [PDF]

open access: yesACS Photonics, 2022
We demonstrate an all-dielectric meta-polarimeter with a single unit-cell design capable of direct measurement of any arbitrary polarization states, achieving a polarization-measurement fidelity of 99 ± 1%. This holds promise for ultra-compact polarization imaging and quantum state tomography.
Shah, Yash D.   +8 more
openaire   +3 more sources

Millimeter-Wave Polarimeters Using Kinetic Inductance Detectors for TolTEC and Beyond [PDF]

open access: yesJournal of Low Temperature Physics, 2018
Microwave kinetic inductance detectors (MKIDs) provide a compelling path forward to the large-format polarimeter, imaging, and spectrometer arrays needed for next-generation experiments in millimeter-wave cosmology and astronomy.
J. Austermann   +12 more
semanticscholar   +1 more source

The Growth of Interest in Astronomical X-Ray Polarimetry

open access: yesGalaxies, 2018
Astronomical X-ray polarimetry was first explored in the end of the 1960s by pioneering rocket instruments. The craze arising from the first discoveries of stellar and supernova remnant X-ray polarization led to the addition of X-ray polarimeters to ...
Frédéric Marin
doaj   +1 more source

Submillimeter and Far-Infrared Polarimetric Observations of Magnetic Fields in Star-Forming Regions [PDF]

open access: yes, 2019
Observations of star-forming regions by the current and upcoming generation of submillimeter polarimeters will shed new light on the evolution of magnetic fields over the cloud-to-core size scales involved in the early stages of the star formation ...
Fissel, Laura, Pattle, Kate
core   +2 more sources

X-Ray Spectro-polarimetry with Photoelectric Polarimeters [PDF]

open access: yes, 2017
We derive a generalization of forward fitting for X-ray spectroscopy to include linear polarization of X-ray sources, appropriate for the anticipated next generation of space-based photoelectric polarimeters.
T. Strohmayer
semanticscholar   +1 more source

Derivation of Instrument Requirements for Polarimetry Using Mg, Fe, and Mn Lines between 250 and 290 nm

open access: yesThe Astrophysical Journal, 2023
Judge et al. recently argued that a region of the solar spectrum in the near-UV between about 250 and 290 nm is optimal for studying magnetism in the solar chromosphere, due to an abundance of Mg ii , Fe ii , and Fe i lines that sample various heights in
A. G. de Wijn   +3 more
doaj   +1 more source

Intrinsic mirror noise in Fabry–Perot based polarimeters: the case for the measurement of vacuum magnetic birefringence [PDF]

open access: yesThe European Physical Journal C, 2018
Although experimental efforts have been active for about 30 years, a direct laboratory observation of vacuum magnetic birefringence, due to vacuum fluctuations, still needs confirmation: the predicted birefringence of vacuum is $$\Delta n = 4.0\times 10^{
G. Zavattini   +7 more
semanticscholar   +1 more source

The growth of interest for astronomical X-ray polarimetry

open access: yes, 2018
Astronomical X-ray polarimetry was first explored in the end of the 60's by pioneering rocket instruments. The craze arising from the first discoveries on stellar and supernova remnant X-ray polarization led to the addition of X-ray polarimeters on-board
Marin, F.
core   +1 more source

Error propagation in polarimetric demodulation [PDF]

open access: yes, 2008
The polarization analysis of the light is typically carried out using modulation schemes. The light of unknown polarization state is passed through a set of known modulation optics and a detector is used to measure the total intensity passing the system.
Collados, M., Ramos, A. Asensio
core   +1 more source

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