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Identifier

000414411

Title

Measuring optical polarization in low dust extinction regions

Alternative Title

Μέτρηση οπτικής πολωσιμετρίας σε περιοχές χαμηλής περιεκτικότητας σκόνης

Author

Σκαλίδης, Ραφαήλ Κ.

Thesis advisor

Τάσσης, Κωνσταντίνος

Abstract

Galactic dust polarized emission contaminates the signal of cosmic microwave background (CMB) which is assumed to bare a B-mode polarization pattern caused during the inflationary epoch. PASHIPAE is an experiment which aspires to treat dust contamination by delivering optical polarization data for millions of stars at regions where observations of CMB are being performed (high galactic regions, |b| > 50^o). In this work we did a mini pathfinder polarization survey for PASHIPAE in order to investigate what is the lowest detectable optical polarization in the sky. We observed regions with minimum dust extinction and found that measuring polarization with an accuracy 0:1% PASHIPAE will be able to deliver polarization measurements for the whole sky except a small part which in total is 20.3 square degrees.

Language

English

Subject

Interstellar medium

Magnetic fields

Διαστρικό μέσο

Μαγνητικά πεδία

Οπτική πολωσιμετρία

Issue date

2018-03-23

Collection

School/Department--School of Sciences and Engineering--Department of Physics--Post-graduate theses