Results 21 to 30 of about 542 (178)

The Growth of Interest in Astronomical X-Ray Polarimetry

Galaxies, 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

A single-channel polarimeter [PDF]

Symposium - International Astronomical Union, 1986
We have developed a single-channel photopolarimeter to measure polarization ∼1%, with an accuracy of 0.1% or so. Laboratory tests show that the performance of the instrument is as per the requirements.
S. K. Jain, J. C. Bhattacharyya
openaire   +1 more source

The Longitudinal Polarimeter at HERA [PDF]

Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 2002
21 pages (Latex), 14 figures (EPS)
Beckmann, M., Borissov, A., Brauksiepe, S., Burkart, F., Fischer, H., Franz, J., Heinsius, F. H., Königsmann, K., Lorenzon, W., Menden, F. M., Most, A., Rudnitsky, S., Schill, C., Seibert, J., Simon, A.   +14 more
openaire   +4 more sources

Optimal ultra-miniature polarimeters in silicon photonic integrated circuits

APL Photonics, 2019
Measurement of the state of polarization of light is essential in a vast number of applications, such as quantum and classical communications, remote sensing, astronomy, and biomedical diagnostics. Nanophotonic structures and integrated photonic circuits
Zhongjin Lin, Leslie A. Rusch, Yuxuan Chen, Wei Shi   +3 more
doaj   +1 more source

The HARPS polarimeter

, 2010
To be published in ASP Conf Series, Solar Polarization Workshop ...
Snik, F., Kochukhov, O., Piskunov, N., Rodenhuis, M., Jeffers, S.V., Keller, C.U., Dolgopolov, A., Stempels, H. C., Makaganiuk, V., Valenti, J., Johns-Krull, C.   +10 more
openaire   +4 more sources

Unique electron polarimeter analyzing power comparison and precision spin-based energy measurement

Physical Review Special Topics. Accelerators and Beams, 2004
Precision measurements of the relative analyzing powers of five electron beam polarimeters, based on Compton, Møller, and Mott scattering, have been performed using the CEBAF accelerator at the Thomas Jefferson National Accelerator Facility (Jefferson ...
J. M. Grames, C. K. Sinclair, J. Mitchell, E. Chudakov, H. Fenker, A. Freyberger, D. W. Higinbotham, M. Poelker, M. Steigerwald, M. Tiefenback, C. Cavata, S. Escoffier, F. Marie, T. Pussieux, P. Vernin, S. Danagoulian, V. Dharmawardane, R. Fatemi, K. Joo, M. Zeier, V. Gorbenko, R. Nasseripour, B. Raue, R. Suleiman, B. Zihlmann   +24 more
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Magnetic Field Structure in Relativistic Jets

EPJ Web of Conferences, 2013
Relativistic jets are ubiquitous when considering an accreting black hole. Two of the most extreme examples of these systems are blazars and gamma-ray bursts (GRBs), the jets of which are thought to be threaded with a magnetic field of unknown structure.
Jermak Helen, Mundell Carole, Steele Iain, Harrison Richard, Kobayashi Shiho, Lindfors Elina, Nilsson Kari, Barres de Almeida Ulisses   +7 more
doaj   +1 more source

High speed partial Stokes imaging using a ferroelectric liquid crystal modulator [PDF]

Journal of the European Optical Society-Rapid Publications, 2008
This paper describes the implementation of an imaging polarimeter using a single ferroelectric liquid crystal light modulator. It provides partial imaging Stokes information at 234 Hz, much faster than polarimeters using nematic light modulators.
Jaulin Albéric, Bigué Laurent
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The Galway astronomical Stokes polarimeter: optical development

EPJ Web of Conferences, 2010
The acquisition time of astronomical polarimeters has in the past been restricted to by the use of polarimeters utilizing modulated or rotating components [1].
Sheehan B., Shearer A., Redfern M., Collins P.   +3 more
doaj   +1 more source

Fundamental limitations of the polarization purity of x rays

APL Photonics, 2018
For a few years, x-ray polarimeters have been discussed and even used as a key method for the investigation of fundamental physical questions, from quantum electrodynamics to solid state physics. However, the sensitivity of optical instruments is limited.
K. S. Schulze
doaj   +1 more source