@MastersThesis{Barbosa:2021:AnUnDe,
author = "Barbosa, Adriany Rodrigues",
title = "Analysis of the uncertainties in the determination of the stokes
parameters employing the proof of concept prototype of the
spectropolarimeter for the Galileo Solar Space Telescope
(GSST/INPE)",
school = "Instituto Nacional de Pesquisas Espaciais (INPE)",
year = "2021",
address = "S{\~a}o Jos{\'e} dos Campos",
month = "2021-03-29",
keywords = "spectropolarimetry, stokes parameters, Mueller Matrix, GSST,
espectropolarimetria, par{\^a}metros de stokes.",
abstract = "The study of the solar magnetic field is of great importance for
our high-tech society. It is the key driver of many solar
phenomena and has a huge impact on the terrestrial space
environment. A better understanding of the Sun's magnetic field is
fundamental to understand better how the Sun influences the Earth.
Therefore, the development of technologies for studying the Sun is
essential. In particular, the methods to measure the solar
magnetic field are using ground-based or space-borne telescopes.
The most reliable and accurate technique for solar magnetic field
measurements is based on spectropolarimetry, i.e., the solar
spectrums in terms of intensity and polarization (Stokes vector).
INPE's solar physics group is developing a spectropolarimeter
Proof of Concept Prototype of the Spectropolarimeter (PCPS)
through the Galileo Solar Space Telescope (GSST) Project. Within
the master's project, the PCPS capabilities to determine the
Stokes vector and the related uncertainties are investigated. The
PCPS camera was characterized, and the Mueller Matrix for an
Etalon state was estimated. During the exchange program (BEPE) at
the MPS, SUSI / SUNRISE was analyzed. The SUSI cameras were
studied, and also the theoretical Mueller matrix of the
instrument. We used data from the Solar Optical Telescope (SOT) /
Hinode to study image calibration. The SOT camera's readout
defects were corrected, and the influence of radiation
bands/cosmic ray spikes on the data was examined. We performed a
simulation to validate the Mueller Matrix of the proof of concept.
In the simulation, our Mueller matrix was multiplied by the
estimated HMI Stokes parameters. The results show that in all
polarization states, the intensity changes due to the polarization
effect of sunspots. Therefore, we can obtain the Stokes parameter
by PCPS by comparing the models output with the observed value.
RESUMO: O estudo do campo magn{\'e}tico solar {\'e} de grande
import{\^a}ncia para nossa sociedade de alta tecnologia. Ele
{\'e} o principal motor de muitos fen{\^o}menos solares e tem um
grande impacto no ambiente espacial terrestre. Um melhor
entendimento do campo magn{\'e}tico do Sol {\'e} fundamental
para entender melhor como o Sol influencia a Terra. Portanto, o
desenvolvimento de tecnologias para estudar o Sol {\'e}
essencial. Em particular, os m{\'e}todos para medir o campo
magn{\'e}tico solar usando telesc{\'o}pios terrestres ou
espaciais. A t{\'e}cnica mais confi{\'a}vel e precisa para
medi{\c{c}}{\~o}es do campo magn{\'e}tico solar {\'e} baseada
na espectropolarimetria, ou seja, a caracteriza{\c{c}}{\~a}o do
espectro solar em termos de intensidade e polariza{\c{c}}{\~a}o
(vetor de Stokes). O grupo de f{\'{\i}}sica solar do INPE
est{\'a} desenvolvendo um espectropolar{\'{\i}}metro (PCPS) por
meio do Projeto Galileo Solar Space Telescope (GSST). Dentro do
projeto de mestrado, a capacidade do PCPS para determinar o vetor
de Stokes e as incertezas relacionadas s{\~a}o investigados. A
c{\^a}mera PCPS foi caracterizada e a matriz de Mueller para um
estado Etalon foi estimada. Durante o programa de interc{\^a}mbio
(BEPE) no MPS, foram estudadas as c{\^a}meras SUSI e tamb{\'e}m
a matriz de Mueller te{\'o}rica do instrumento. Usamos dados do
Solar Optical Telescope (SOT) / Hinode para estudar a
calibra{\c{c}}{\~a}o de imagens. Os defeitos de leitura da
c{\^a}mera SOT foram corrigidos e a influ{\^e}ncia das bandas de
radia{\c{c}}{\~a}o / picos de raios c{\'o}smicos nos dados foi
examinada. Realizamos uma simula{\c{c}}{\~a}o para validar a
Matriz de Mueller do demonstrador de conceito. Na
simula{\c{c}}{\~a}o, nossa matriz de Mueller foi multiplicada
pelos par{\^a}metros estimados de HMI Stokes. Os resultados
mostram que em todos os estados de polariza{\c{c}}{\~a}o, a
intensidade muda devido ao efeito de polariza{\c{c}}{\~a}o das
manchas solares. Portanto, podemos obter o par{\^a}metro de
Stokes por PCPS comparando a sa{\'{\i}}da do modelo com o valor
observado.",
committee = "Dal Lago, Alisson (presidente) and Vieira, Luis Eduardo Antunes
(orientador) and Carlesso, Franciele (orientadora) and Gobbi,
Delano and Echer, Ezequiel and Stekell, Tardelli Ronan Coelho and
Rodriguez, Jenny Marcela",
englishtitle = "An{\'a}lise das incertezas na determina{\c{c}}{\~a}o dos
par{\^a}metros de stokes empregando o demonstrador de conceito do
espectropolar{\'{\i}}metro para o Galileo Solar Space Telescope
(GSST/INPE)",
language = "en",
pages = "197",
ibi = "8JMKD3MGP3W34R/44BFRP8",
url = "http://urlib.net/ibi/8JMKD3MGP3W34R/44BFRP8",
targetfile = "publicacao.pdf",
urlaccessdate = "20 maio 2024"
}