Results 141 to 150 of about 808 (168)

X-ray Polarimetry-Timing

open access: yes, 2023
X-ray polarimetry-timing is the characterization of rapid variability in the X-ray polarization degree and angle. As for the case of spectral-timing, it provides causal information valuable for reconstructing indirect maps of the vicinity of compact objects. To call X-ray polarimetry-timing a young field is somewhat of an understatement, given that the
Adam Ingram, Ingram Adam
exaly   +3 more sources

XIPE: the X-ray imaging polarimetry explorer [PDF]

open access: yesExperimental Astronomy, 2013
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. X-ray polarimetry investigates the acceleration process, for example, including those typical of magnetic reconnection in solar flares, but also emission in the ...
Antonio Maggio   +2 more
exaly   +11 more sources

Scientific prospects for hard X-ray polarimetry [PDF]

open access: yesAstroparticle Physics, 2011
X-ray polarimetry promises to give qualitatively new information about high-energy sources. Examples of interesting source classes are binary black hole systems, rotation and accretion powered neutron stars, Microquasars, Active Galactic Nuclei and Gamma-Ray Bursts. Furthermore, X-ray polarimetry affords the possibility for testing fundamental physics,
A Garson, M Beilicke
exaly   +3 more sources

IXPE: The Imaging X-Ray Polarimetry Explorer

2022
Martin Weisskopf   +2 more
exaly   +2 more sources

High-Precision X-Ray Polarimetry

Physical Review Letters, 2013
The polarization purity of 6.457- and 12.914-keV x rays has been improved to the level of 2.4×10(-10) and 5.7×10(-10). The polarizers are channel-cut silicon crystals using six 90° reflections. Their performance and possible applications are demonstrated in the measurement of the optical activity of a sucrose solution.
Marx, B.   +12 more
openaire   +3 more sources

Stellar And Solar X-Ray Polarimetry

Optical Engineering, 1975
The theory of Bragg crystal x-ray polarimeters is presented to-gether with an analysis of the statistics of photon-limited polarimeters. The focusing Bragg crystal polarimeter flown on the OSO-8 Satellite is described and a number of results obtained at 2.6 keV and 5.2 keV are presented.
openaire   +1 more source

X-ray polarimetry — A novel application of CCDs

Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 1996
Abstract A new method of X-ray polarimetry based on measuring the photoelectron emission direction in a finely segmented MOS CCD has been established using monochromatic synchrotron radiation and planar channeling radiation. For the smallest pixel dimensions (6.8 × 6.8 μm 2 ) available today in commercial optical CCD cameras an analyzing power for ...
Bögner, M.   +5 more
openaire   +2 more sources

Stellar X-ray polarimetry

Il Nuovo Cimento C, 1993
Stellar X-ray polarimetry has for a long time been indicated as a very powerful diagnostic tool. In spite of this widely recognised interest, positive results are limited to just one: the detection, in the now far 1978, of the polarisation of the X-ray emission from the Crab Nebula. Novel-generation experiments promise a wider and richer amount mess of
openaire   +1 more source

X-ray Polarimetry

2010
Due to the advent of a new generation of detectors, X-ray polarimetry promises to join X-ray imaging, spectroscopy and timing as one of the main observational techniques in high energy astrophysics. This has renewed interest in the field, and indeed several polarimetric missions have recently been proposed.
openaire   +1 more source

Micropattern gas detector for X-ray polarimetry

SPIE Proceedings, 2003
We report on a new instrument that brings high efficiency to x-ray polarimetry, which is the last unexplored field of x-ray astronomy. It derives the polarization information from the tracks of the photoelectrons imaged by a finely subdivided gas pixel detector.
Bellazzini R   +12 more
openaire   +2 more sources

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