Results 1 to 10 of about 940 (165)

SALT Spectropolarimetry and Self-Consistent SED and Polarization Modeling of Blazars

open access: yesGalaxies, 2017
We report on recent results froma target-of-opportunity program to obtain spectropolarimetry observations with the Southern African Large Telescope (SALT) on flaring gamma-ray blazars. SALT spectropolarimetry and contemporaneous multi-wavelength spectral
Hester Maria Schutte   +2 more
exaly   +3 more sources

Development of a proof-of-concept spectropolarimeter in the framework of the GSST mission: Characterization and performance analysis of a sCMOS image sensor

open access: yesFrontiers in Astronomy and Space Sciences, 2022
Camera characterization is critical for solar observation instruments such as spectropolarimeters. This paper presents the characterization of the proof-of-concept spectropolarimeter sCMOS image sensor. The report is divided into two parts.
Adriany Rodrigues Barbosa   +2 more
doaj   +1 more source

Message in a Bottle: Unveiling the Magneto-Ionic Complexity of AGNs through the Stokes QU-Fitting Technique

open access: yesGalaxies, 2021
Here, I overview one of the available techniques for the analysis of broad-band spectropolarimetric data, the Stokes QU-fitting. Since broad-band receivers have been installed at most radio facilities, the collection of radio data, both the total ...
Alice Pasetto
doaj   +1 more source

SPGCam: A specifically tailored camera for solar observations

open access: yesFrontiers in Astronomy and Space Sciences, 2023
Designing a new astronomical instrument typically challenges the available cameras on the market. In many cases, no camera can fulfill the requirements of the instrument in terms of photon budget, speed, and even interfaces with the rest of the ...
David Orozco Suárez   +41 more
doaj   +1 more source

Applications of Mueller Matrix Polarimetry to Biological and Agricultural Diagnostics: A Review

open access: yesApplied Sciences, 2022
The review contains a systematization of the main approaches to the practical implementation of Mueller matrix polarimetry and the prospects for its application in biology and agriculture. The most typical optical layouts for measuring the Mueller matrix
Dmitry N. Ignatenko   +3 more
doaj   +1 more source

Integrated plasmonic metasurfaces for spectropolarimetry [PDF]

open access: yesNanotechnology, 2016
Plasmonic metasurfaces enable simultaneous control of the phase, momentum, amplitude and polarisation of light and hence promise great utility in realisation of compact photonic devices. In this paper, we demonstrate a novel chip-scale device suitable for simultaneous polarisation and spectral measurements through use of six integrated plasmonic ...
Wei Ting Chen   +6 more
openaire   +5 more sources

Radio Observations of Coronal Mass Ejections: Space Weather Aspects

open access: yesFrontiers in Astronomy and Space Sciences, 2020
We review the current state-of-affairs in radio observations of Coronal Mass Ejections (CMEs) from a Space Weather perspective. In particular, we examine the role of radio observations in predicting or presaging an eruption, in capturing the formation ...
Angelos Vourlidas   +3 more
doaj   +1 more source

The Magnetic Sensitivity of the (250–278 nm) Fe ii Polarization Spectrum

open access: yesThe Astrophysical Journal, 2023
This paper presents a theoretical investigation of the polarization and magnetic sensitivity of the near-ultraviolet (near-UV) solar spectral lines of Fe ii between 250 and 278 nm.
David Afonso Delgado   +2 more
doaj   +1 more source

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