Results 51 to 60 of about 891 (131)

Novel developments in computational spectropolarimeter. [PDF]

Light Sci Appl, 2023
Hsiang EL, Wu ST.
europepmc   +1 more source

Spatially resolved measurement of helium atom emission line spectrum in scrape-off layer of Heliotron J by near-infrared Stokes spectropolarimetry. [PDF]

Sci Rep, 2022
Chatani T, Shikama T, Ueno Y, Kado S, Kawazome H, Minami T, Matoike R, Murakumo M, Kobayashi S, Ohshima S, Iwata A, Oishi T, Ishizawa A, Nakamura Y, Okada H, Konoshima S, Mizuuchi T, Nagasaki K, Hasuo M.   +18 more
europepmc   +1 more source

Energy-dependent Polarization Angle Variability as a Robust Diagnostic for Blazar Flaring Mechanisms

The Astrophysical Journal
Identifying the physical mechanism driving blazar flares remains a central challenge in high-energy astrophysics. We show that the energy dependence of the standard deviation of the polarization angle variability ( σ _PA ) provides a powerful and robust ...
Haocheng Zhang, Benjamin de Jonge, Manel Errando, Xiaocan Li, Fan Guo   +4 more
doaj   +1 more source

X-Ray and Radio Polarimetry of the Neutron Star Low-mass X-Ray Binary GX 13+1

The Astrophysical Journal
We report the X-ray and radio polarization study of the neutron star low-mass X-ray binary (LMXB) GX 13+1 using the Imaging X-ray Polarimetry Explorer (IXPE) and Very Large Array.
Unnati Kashyap, Thomas J. Maccarone, Eliot C. Pattie, Mason Ng, Swati Ravi, Herman L. Marshall   +5 more
doaj   +1 more source

Multiband Spectropolarimetry of Lunar Maria, Pyroclastics, Fresh Craters, and Swirl Materials

The Astronomical Journal
Imaging polarimetry is a well-known method for examining the small-scale structure of the surface regolith of airless celestial bodies. In this study, we examine (for the first time) the wavelength-dependent polarization behavior of selected lunar areas,
Christian Wöhler, Mirza Arnaut, Megha Bhatt   +2 more
doaj   +1 more source

The Impact of the Angle-average Approximation in the Partial Frequency Redistribution Modeling of the Mg ii h–k Doublet Stokes Profiles

The Astrophysical Journal
In recent years, the Mg  ii h and k lines have become increasingly important for the diagnostics of magnetic fields in the solar chromosphere, motivated both by the advances in the modeling capabilities of their polarization and by the unprecedented ...
Tanausú del Pino Alemán, Ernest Alsina Ballester, Javier Trujillo Bueno, Gioele Janett, Fabio Riva, Luca Belluzzi   +5 more
doaj   +1 more source

Revisiting the X-Ray Polarization of the Shell of Cassiopeia A Using Spectropolarimetric Analysis

The Astrophysical Journal
X-ray synchrotron radiation is expected to be highly polarized. Thanks to the Imaging X-ray Polarimetry Explorer (IXPE), it is now possible to evaluate the degree of X-ray polarization in sources such as supernova remnants (SNRs). Jointly using IXPE data
A. Mercuri, E. Greco, J. Vink, R. Ferrazzoli, S. Perri   +4 more
doaj   +1 more source

Spectropolarimetry for Discerning Geometry and Structure in Circumstellar Media of Hot Massive Stars

Galaxies
Spectropolarimetric techniques are a mainstay of astrophysical inquiry, ranging from Solar System objects to the Cosmic Background Radiation. This review highlights applications of stellar polarimetry for massive hot stars, particularly in the context of
Richard Ignace, Kenneth G. Gayley, Roberto Casini, Paul Scowen, Christiana Erba, Jeremy Drake   +5 more
doaj   +1 more source

An Integral-based Technique to Accelerate the Monte Carlo Radiative Transfer Computation for Supernovae

The Astrophysical Journal
We present an integral-based technique (IBT) algorithm to accelerate supernova (SN) radiative transfer calculations. The algorithm utilizes “integral packets,” which are calculated by the path integral of the Monte Carlo (MC) energy packets, to ...
Xingzhuo Chen, Lifan Wang, Daniel Kasen
doaj   +1 more source

Polychromatic metasurfaces for complete control of phase and polarization in the mid-infrared. [PDF]

Light Sci Appl, 2023
Zhou Y, Fan JA.
europepmc   +1 more source