Results 21 to 30 of about 13,399 (197)

Ultra-high precision x-ray polarimetry with artificial diamond channel cuts at the beam divergence limit

open access: yesPhysical Review Research, 2020
We report on the use of synthetic single-crystal diamonds for high definition x-ray polarimetry. The diamonds are precision mounted to form artificial channel-cut crystals (ACCs). Each ACC supports four consecutive reflections with a scattering angle 2Θ_{
Hendrik Bernhardt   +13 more
doaj   +1 more source

Equalizing the Pixel Response of the Imaging Photoelectric Polarimeter Onboard the IXPE Mission

open access: yesThe Astronomical Journal, 2023
The Gas Pixel Detector is a gas detector, sensitive to the polarization of X-rays, currently flying onboard the Imaging X-ray Polarimetry Explorer (IXPE)—the first observatory dedicated to X-ray polarimetry.
John Rankin   +20 more
doaj   +1 more source

Deep ensemble analysis for Imaging X-ray Polarimetry [PDF]

open access: yesNuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 2021
18 pages, 9 figures.
Peirson, A. L.   +4 more
openaire   +2 more sources

Probing Magnetic Fields and Acceleration Mechanisms in Blazar Jets with X-ray Polarimetry

open access: yesGalaxies, 2021
X-ray polarimetry promises us an unprecedented look at the structure of magnetic fields and on the processes at the base of acceleration of particles up to ultrarelativistic energies in relativistic jets.
Fabrizio Tavecchio
doaj   +1 more source

The Instrument of the Imaging X-Ray Polarimetry Explorer

open access: yesThe Astronomical Journal, 2021
Abstract While X-ray spectroscopy, timing, and imaging have improved much since 1962 when the first astronomical nonsolar source was discovered, especially wi the launch of the Newton/X-ray Multi-Mirror Mission, Rossi/X-ray Timing Explorer, and Chandra/Advanced X-ray Astrophysics Facility, the progress of X-ray polarimetry has been ...
Paolo Soffitta   +80 more
openaire   +5 more sources

Photoelectric Polarimetry and the Gas Pixel Detector Yesterday, Today and Tomorrow

open access: yesGalaxies, 2018
Since the very beginning of X-ray Astronomy, polarimetry has been suggested as a tool of diagnostics, of great potentiality. While almost all measurements of X-rays were based on detectors using the photoelectric effect, the first attempt to perform ...
Enrico Costa
doaj   +1 more source

An efficient photoelectric X-ray Polarimeter for the study of Black Holes and Neutron Stars [PDF]

open access: yes, 2001
In astronomy there are basically four kinds of observations to extract the information carried by electromagnetic radiation: photometry, imaging, spectroscopy and polarimetry.
Bellazzini, Ronaldo   +5 more
core   +2 more sources

IXPE Observations of the Quintessential Wind-accreting X-Ray Pulsar Vela X-1

open access: yesThe Astrophysical Journal Letters, 2023
The radiation from accreting X-ray pulsars was expected to be highly polarized, with some estimates for the polarization degree of up to 80%. However, phase-resolved and energy-resolved polarimetry of X-ray pulsars is required in order to test different ...
Sofia V. Forsblom   +100 more
doaj   +1 more source

X-ray Polarimetry

open access: yes, 2021
Preprint of an article to appear in The WSPC Handbook of Astronomical Instrumentation, David Burrows (ed.), copyright World Scientific Publishing Company.
openaire   +2 more sources

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

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