Results 41 to 50 of about 6,061,876 (188)

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 Imaging X-Ray Polarimetry Explorer (IXPE): Technical Overview II [PDF]

open access: yes, 2019
The Imaging X-ray Polarimetry Explorer (IXPE) will add polarization to the properties (time, energy, and position) observed in x-ray astronomy. A NASA Astrophysics Small Explorer (SMEX) in partnership with the Italian Space Agency (ASI), IXPE will ...
Victoria M. Kaspi   +253 more
core   +2 more sources

Time Resolved Two Dimensional X-Ray Densitometry of a Two Phase Flow Downstream of a Ventilated Cavity [PDF]

open access: yes, 2013
To measure the void fraction distribution in gas-liquid flows, a two-dimensional x-ray densitometry system was developed. This system is capable of acquiring a two-dimensional projection with a 225 cm2 area of measurement through 21 cm of water.
GABILLET, Céline   +8 more
core   +1 more source

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

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

An unfolding method for X-ray spectro-polarimetry [PDF]

open access: yesAstroparticle Physics, 2015
12 pages, 7 figures, accepted for publication in Astropart ...
Kislat, Fabian   +4 more
openaire   +2 more sources

A deep ensemble approach to X-ray polarimetry

open access: yesCoRR, 2021
X-ray polarimetry will soon open a new window on the high energy universe with the launch of NASA's Imaging X-ray Polarimetry Explorer (IXPE). Polarimeters are currently limited by their track reconstruction algorithms, which typically use linear estimators and do not consider individual event quality.
A. L. Peirson, R. W. Romani
openaire   +3 more sources

Gamma-Ray Polarimetry

open access: yes, 2022
While the scientific potential of high-energy X-ray and gamma-ray polarimetry has long been recognized, measuring the polarization of high-energy photons is challenging. To date, there has been very few significant detections from an astrophysical source.
Produit, Nicolas   +3 more
core   +4 more sources

X-ray polarimetry of X-ray pulsar X Persei: another orthogonal rotator?

open access: yesMonthly Notices of the Royal Astronomical Society, 2023
ABSTRACT X Persei is a persistent low-luminosity X-ray pulsar of period of ≈ 835 s in a Be binary system. The field strength at the neutron star surface is not known precisely, but indirect signs indicate a magnetic field above 1013 G, which makes the object one of the most magnetized known X-ray pulsars.
Mushtukov, A A   +106 more
openaire   +9 more sources

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