Results 41 to 50 of about 808 (168)

A gas pixel detector for x-ray polarimetry

open access: yesNuclear Physics B - Proceedings Supplements, 2006
Even though lacking of solid experimental verifications, X-ray polarimetry is strongly established as a deep diagnostic tool for probing the emission mechanisms in astronomical sources of high energy radiation. The recent development of new, more efficient instrumentation, as well as the renewed interest of the theoreticians, has drawn a significant ...
BALDINI, LUCA   +14 more
openaire   +3 more sources

Revealing the Hidden Stress Field and Its Thermal Input Dependence in Femtosecond Laser–Processed Silicon Photonic Chip Substrates via Weak Measurement

open access: yesNanophotonics, Volume 15, Issue 13, 13 July 2026.
A novel noncontact method based on weak value amplification enables high‐sensitivity stress mapping of femtosecond laser processed silicon photonic chip substrates. It converts microscale stress into the birefringent phase via the photoelastic effect and reads it out with weak measurement, achieving a 0.37‐kPa detection limit.
Wanshou Sun   +5 more
wiley   +1 more source

X-RAY AND GAMMA-RAY POLARIMETRY OF GRBS [PDF]

open access: yesEAS Publications Series, 2013
Polarimetry is expected to play a major role as a diagnostic tool for GRBs. Techniques and methods for X/Gamma ray polarimetry are reviewed including the specific problems related to the transient nature of the sources. Optical data do not encourage optimistic predictions on polarimetry of afterglows.
openaire   +1 more source

The Imaging X-ray Polarimetry Explorer

open access: yes, 2021
The Imaging X-ray Polarimetry Explorer is the next NASA Small Explorer developed in collaboration with the Italian Space Agency (Agenzia Spaziale Italiana, ASI). The mission, selected in 2017, is dedicated to imaging polarimetry in the 2-8 keV energy range and the payload comprises of three identical telescopes, each composed of a grazing-incidence ...
Muleri, Fabio, IXPE team
openaire   +2 more sources

Observations of Low and Intermediate Spectral Peak Blazars with the Imaging X-Ray Polarimetry Explorer

open access: yesThe Astrophysical Journal
We present X-ray polarimetry observations from the Imaging X-ray Polarimetry Explorer (IXPE) of three low spectral peak and one intermediate spectral peak blazars, namely 3C 273, 3C 279, 3C 454.3, and S5 0716+714.
Herman L. Marshall   +164 more
doaj   +1 more source

Electronic Instrumentation in Chemical Analysis: A Case Study (and Other Examples) From a 20th‐Century “Revolution”

open access: yesNatural Sciences, Volume 6, Issue 3, July 2026.
A review of advances in chemical analysis brought about by electronic instrumentation. The techniques, and their applications, demonstrate how, collectively, they played a crucial role in transforming the laboratory landscape. If not a relatively recent revolution in one branch of science, it was certainly a transformation.
Anthony S. Travis
wiley   +1 more source

Cyclic Olefin Copolymers as Versatile Materials for Advanced Engineering Applications

open access: yesAdvanced Functional Materials, Volume 36, Issue 47, 11 June 2026.
Cyclic olefin copolymers (COCs) are presented as highly versatile materials combining tunable synthesis, excellent optical properties, and mechanical robustness. Their potential spans microfluidics, bioengineering, and advanced electronics, while emerging self‐healing and sustainable solutions highlight future opportunities.
Giulia Fredi   +3 more
wiley   +1 more source

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   +1 more source

Synthesis of Levoglucosenone‐Based Amphiphilic Molecules via Microwave‐Assisted Michael Additions

open access: yesChemistry–Methods, Volume 6, Issue 6, June 2026.
Comparison between the conventional and the sustainable synthetic microwave‐based approach for Michael addition reactions on LGO developed in this work. Aligning with the objectives of the EU chemicals strategy for sustainability, an ultrarapid, safe and sustainable method for producing a library of levoglucosenone (LGO)‐based amphiphilic molecules was
Maria Jose Calandri   +8 more
wiley   +1 more source

X-Ray Spectro-polarimetry with Photoelectric Polarimeters [PDF]

open access: yesThe Astrophysical Journal, 2017
Abstract We derive a generalization of forward fitting for X-ray spectroscopy to include linear polarization of X-ray sources, appropriate for the anticipated next generation of space-based photoelectric polarimeters. We show that the inclusion of polarization sensitivity requires joint fitting to three observed spectra, one for each of ...
openaire   +2 more sources

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