Results 11 to 20 of about 13,399 (197)

The growth of interest for astronomical X-ray polarimetry [PDF]

open access: yesGalaxies, 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   +3 more sources

Broad-Band Soft X-ray Polarimetry [PDF]

open access: yesSPIE Proceedings, 2009
We developed an instrument design capable of measuring linear X-ray polarization over a broad-band using conventional spectroscopic optics. A set of multilayer-coated flats reflects the dispersed X-rays to the instrument detectors.
Heilmann, Ralf   +3 more
core   +3 more sources

X-ray Polarimetry of X-ray Pulsars

open access: yesGalaxies
Radiation from X-ray pulsars (XRPs) was expected to be strongly linearly polarized owing to a large difference in their ordinary and extraordinary mode opacities. The launch of IXPE allowed us to check this prediction. IXPE observed a dozen X-ray pulsars,
Juri Poutanen   +2 more
doaj   +4 more sources

Studying Microquasars with X-Ray Polarimetry [PDF]

open access: yesGalaxies, 2018
Microquasars are Galactic black hole systems in which matter is transferred from a donor star and accretes onto a black hole of, typically, 10–20 solar masses.
Giorgio Matt, Francesco Tamborra
doaj   +2 more sources

High-Energy Polarization: Scientific Potential and Model Predictions

open access: yesGalaxies, 2017
Understanding magnetic field strength and morphology is very important for studying astrophysical jets. Polarization signatures have been a standard way to probe the jet magnetic field.
Haocheng Zhang
doaj   +3 more sources

A changing-look AGN to be probed by X-ray polarimetry [PDF]

open access: yesGalaxies, 2018
Active galactic nuclei (AGN) produce the highest intrinsic luminosities in the Universe from within a compact region. The central engine is thought to be powered by accretion onto a supermassive black hole.
González, Beatriz Agís   +2 more
core   +4 more sources

Polarimetry with a soft x-ray spectrometer [PDF]

open access: yesSPIE Proceedings, 2008
An approach for measuring linear X-ray polarization over a broad-band using conventional spectroscopic optics is described. A set of multilayer-coated flats reflect the dispersed X-rays to the instrument detectors.
Marshall, Herman L.
core   +3 more sources

X-Ray Polarimetry as a Tool to Constrain Orbital Parameters in X-Ray Binaries

open access: yesThe Astrophysical Journal
X-ray binary systems consist of a companion star and a compact object in close orbit. Thanks to their copious X-ray emission, these objects have been studied in detail using X-ray spectroscopy and timing.
John Rankin   +12 more
doaj   +3 more sources

X-ray polarimetry on-board of HXMT [PDF]

open access: yesSPIE Proceedings, 2008
The development of micropixel gas detectors, capable to image tracks produced in a gas by photoelectrons, makes possible to perform polarimetry of X-ray celestial sources in the focus of grazing incidence X-ray telescopes. HXMT is a mission by the Chinese Space Agency aimed to survey the Hard X-ray Sky with Phoswich detectors, by exploitation of the ...
Soffitta Paolo   +19 more
openaire   +3 more sources

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

open access: yesSpace Telescopes and Instrumentation 2016: Ultraviolet to Gamma Ray, 2016
XIPE, the X-ray Imaging Polarimetry Explorer, is a mission dedicated to X-ray Astronomy. At the time of writing XIPE is in a competitive phase A as fourth medium size mission of ESA (M4). It promises to reopen the polarimetry window in high energy Astrophysics after more than 4 decades thanks to a detector that efficiently exploits the photoelectric ...
Soffitta P.   +273 more
openaire   +9 more sources

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