Results 51 to 60 of about 419,985 (168)

Evolution of Polarization Angle of the Gamma-Ray Burst X-Ray Flares

open access: yesThe Astrophysical Journal
With the continuous advancement of high-energy polarimetric detectors, polarization, as a crucial means of probing the magnetic field configuration in radiation region, has received increasing attention.
Xing-Yao Wang, Mi-Xiang Lan
doaj   +1 more source

Polarization Aberrations in Coronagraphs

open access: yes, 2019
In the search for habitable extrasolar planets, the ability to separate and detect the dim planet's light from its much brighter host star is paramount. The inherent polarization properties of optical systems can lead to small but significant deviations ...
Davis, Jeffrey Mitchell
core   +2 more sources

Rotation of Polarization Angle in Gamma-Ray Burst Prompt Phase. III. The Influence of the Magnetic Field Orientation

open access: yesThe Astrophysical Journal
Polarization is very sensitive to the configuration of the magnetic field in the radiation region. In addition to polarization curve and polarization spectrum, studies of the polarization angle (PA) rotation spectrum are also crucial.
Xing-Yao Wang   +2 more
doaj   +1 more source

TRIShUL: Technique for Reconstructing magnetic Interstellar Structure Using starLight polarization

open access: yesAstronomy & Astrophysics
We present a novel technique for the decomposition of line-of-sight (LOS) stellar polarization as a function of distance, aimed at reconstructing 3D plane-of-sky magnetic structures in the interstellar medium.
Uppal Namita   +4 more
doaj   +1 more source

The Detection Prospects of the Polarizations in the Plateau Phase of the Gamma-Ray Burst Afterglow by eXTP

open access: yesThe Astrophysical Journal
Approximately 20%–50% of the gamma-ray burst (GRB) X-ray afterglows exhibit shallow decay features. Two popular energy-injection models have been proposed to interpret such observational phenomena, the relativistic wind bubble (RWB) model with a Poynting-
Shu-Ting Wu   +5 more
doaj   +1 more source

The Guitar Filament’s Magnetic Field Revealed by Starlight Polarization

open access: yesThe Astrophysical Journal
The Guitar nebula surrounding PSR B2224+65 boasts a pulsar X-ray filament likely aligned with the local magnetic field. We present new RoboPol stellar polarization data distributed along the line of sight to the pulsar.
Jack T. Dinsmore   +4 more
doaj   +1 more source

Effect of Multiple Scattering on the Transmission Spectra and the Polarization Phase Curves for Earth-like Exoplanets

open access: yesThe Astrophysical Journal, 2023
It is the most appropriate time to characterize the Earth-like exoplanets in order to detect biosignature beyond the Earth because such exoplanets will be the prime targets of big-budget missions like JWST, Roman Space Telescope, HabEx, LUVOIR, Thirty ...
Manika Singla   +2 more
doaj   +1 more source

Polarization of Circumstellar Debris Disk Light Echoes

open access: yesThe Astronomical Journal
Light echoes of debris disks around active stars can reveal disk structure and composition even when disks are not spatially resolved. Unfortunately, distinguishing reflected light from quiescent starlight and unexpected post-peak flare structure is ...
Austin J. King   +3 more
doaj   +1 more source

Polarization Spectra of Extrasolar Giant Planets

open access: yes, 2004
We present simulated spectra of the flux and degree of polarization of starlight that is reflected by extrasolar giant planets (EGPs). In particular the polarization depends strongly on the structure of the planetary atmosphere, and appears to be a ...
Stam, D.M.
core   +2 more sources

Sensitivity of Polarization to Grain Shape. I. Convex Shapes

open access: yesThe Astrophysical Journal
Aligned interstellar grains produce polarized extinction (observed at wavelengths from the far-ultraviolet to the mid-infrared) and polarized thermal emission (observed at far-infrared and submm wavelengths).
B. T. Draine
doaj   +1 more source

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