Search engine for discovering works of Art, research articles, and books related to Art and Culture
Javascript must be enabled to continue!
Maser polarization simulation in an evolving star: effect of magnetic field on SiO maser in the circumstellar envelope
View through CrossRef
AbstractMaser polarization changes during a pulsation in the CSE of an AGB star are related in a complicated way to the magnetic field structure. 43 GHz SiO maser transitions are useful for polarization study because of their relatively simple Zeeman splitting structure and their location. This work uses 3D maser simulation to investigate the effect of the magnetic field on maser polarization with different directions. The results show that linear polarization depends on the magnetic direction while circular polarization is less significant. The EVPA changes through π/2 at an angle of around 50 degrees, approximately the Van Vleck angle. The EVPA rotation result from 3D maser simulation is consistent with results from 1D simulations, and may explain the 90 degree change of the EVPA within a single cloud in the observational cases of TX Cam and R Cas.
Cambridge University Press (CUP)
Title: Maser polarization simulation in an evolving star: effect of magnetic field on SiO maser in the circumstellar envelope
Description:
AbstractMaser polarization changes during a pulsation in the CSE of an AGB star are related in a complicated way to the magnetic field structure.
43 GHz SiO maser transitions are useful for polarization study because of their relatively simple Zeeman splitting structure and their location.
This work uses 3D maser simulation to investigate the effect of the magnetic field on maser polarization with different directions.
The results show that linear polarization depends on the magnetic direction while circular polarization is less significant.
The EVPA changes through π/2 at an angle of around 50 degrees, approximately the Van Vleck angle.
The EVPA rotation result from 3D maser simulation is consistent with results from 1D simulations, and may explain the 90 degree change of the EVPA within a single cloud in the observational cases of TX Cam and R Cas.
Related Results
Maser polarization simulation in the circumstellar envelope of an evolving star
Maser polarization simulation in the circumstellar envelope of an evolving star
Abstract
An important phenomenon in a pulsing AGB (Asymptotic Giant Branch) star is the variability of its circumstellar envelope. The study of stimulated radiation ...
3D Maser polarization simulation for J = 1−0 SiO masers in the circumstellar envelope of an AGB star
3D Maser polarization simulation for J = 1−0 SiO masers in the circumstellar envelope of an AGB star
ABSTRACT
SiO masers from AGB stars exhibit variability in intensity and polarization during a pulsation period. This variability is explained by radiative transfer a...
Magnetic cloak made of NdFeB permanent magnetic material
Magnetic cloak made of NdFeB permanent magnetic material
In the past few years, the concept of an electromagnetic invisibility cloak has received much attention. Based on the pioneering theoretical work, invisibility cloaks have been gre...
Construction of magnetic nanochains to achieve magnetic energy coupling in scaffold
Construction of magnetic nanochains to achieve magnetic energy coupling in scaffold
Abstract
Background
Fe
3
O
4
nanoparticles are highly desired for construc...
Comparison of linear and circular polarization in foggy environments at UV-NIR wavelengths
Comparison of linear and circular polarization in foggy environments at UV-NIR wavelengths
This paper investigates the polarization persistence of linear polarization and circular polarization in foggy environments from ultraviolet (UV) to near-infrared (NIR). Using pola...
Study on multi-beam superposition using complementary polarization control plates
Study on multi-beam superposition using complementary polarization control plates
In order to meet the requirement for uniform irradiation on the target in inertial confinement fusion, a schemie is proposed for achieving the depolarized superposition of multi-be...
Polarization Study of Gamma-ray Binary Systems
Polarization Study of Gamma-ray Binary Systems
Abstract
The polarization of X-ray emission is a unique tool used to investigate the magnetic field structure around astrophysical objects. In this paper, we study t...
Classifying Maser features with Fortran and shell script for proper motion study of Water masers in W49N
Classifying Maser features with Fortran and shell script for proper motion study of Water masers in W49N
Abstract
The 22-GHz Water masers in the W49N star-forming region are one of the richest and most luminous sources in our Galaxy, at the distance of 11.11 kpc. Very L...