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master's thesis
Karakterizacija magnetizirane međuzvjezdane materije
Zagreb: University of Zagreb, Faculty of Science, 2020. urn:nbn:hr:217:476686
Čolaković-Bencerić, Marta
University of Zagreb
Faculty of Science
Department of Physics

Institutional repository: Repository of the Faculty of Science

Cite this document

Čolaković Bencerić, M. (2020). Karakterizacija magnetizirane međuzvjezdane materije (Master's thesis). Zagreb: University of Zagreb, Faculty of Science. Retrieved from https://urn.nsk.hr/urn:nbn:hr:217:476686

Čolaković Bencerić, Marta. "Karakterizacija magnetizirane međuzvjezdane materije." Master's thesis, University of Zagreb, Faculty of Science, 2020. https://urn.nsk.hr/urn:nbn:hr:217:476686

Čolaković Bencerić, Marta. "Karakterizacija magnetizirane međuzvjezdane materije." Master's thesis, University of Zagreb, Faculty of Science, 2020. https://urn.nsk.hr/urn:nbn:hr:217:476686

Čolaković Bencerić, M. (2020). 'Karakterizacija magnetizirane međuzvjezdane materije', Master's thesis, University of Zagreb, Faculty of Science, accessed 23 December 2024, https://urn.nsk.hr/urn:nbn:hr:217:476686

Čolaković Bencerić M. Karakterizacija magnetizirane međuzvjezdane materije [Master's thesis]. Zagreb: University of Zagreb, Faculty of Science; 2020 [cited 2024 December 23] Available at: https://urn.nsk.hr/urn:nbn:hr:217:476686

M. Čolaković Bencerić, "Karakterizacija magnetizirane međuzvjezdane materije", Master's thesis, University of Zagreb, Faculty of Science, Zagreb, 2020. Available at: https://urn.nsk.hr/urn:nbn:hr:217:476686

Metadata
TitleKarakterizacija magnetizirane međuzvjezdane materije
Title (english)Characterisation of the magnetized interstellar medium
AuthorMarta Čolaković-Bencerić
MentorMatko Milin (mentor)
Committee memberMatko Milin (predsjednik povjerenstva)
Committee memberNikola Poljak (član povjerenstva)
Committee memberMaro Cvitan (član povjerenstva)
Committee memberMihael Makek (član povjerenstva)
Committee memberIvica Smolić (član povjerenstva)
GranterUniversity of Zagreb
Faculty of Science
(Department of Physics)
Zagreb
Defense date and country2020-07-24, Croatia
Scientific / art field,
discipline and subdiscipline		NATURAL SCIENCES
Physics
Abstract
U ovom radu prikazana je analiza struktura u simuliranim polarimetrijskim opažanjima korištenjem metoda RM sinteze i Rolling Hough transformata. Simulirana su opažanja polariziranog intenziteta na rasponu frekvencija u radio području nekoliko magnetohidrodinamičkih modela kompresibilne turbulentne međuzvjezdane tvari i modela sudara super-ljuski. Pokazano je da je usmjerenost depolariziranih struktura u opažanjima turbulentne meduzvjezdane tvari prisutna samo ako model sadrži homogenu komponentu magnetskog polja, no da su dovoljne vrijednosti jakosti homogene komponente manje od onih opaženih u spiralnim krakovima Mliječnog puta. Nadalje, pokazano je da udio depolariziranih piksela pada povećanjem kinematičke viskoznosti i otpornosti te jakosti homogene komponente magnetskog polja. Naposljetku, pokazano je da su sudari super-ljuski opazivi polarimetrijskim mjerenjima te da izgled struktura ovisi o gustoći elektrona kozmičkih zraka koje uzrokuju emisiju unutar spomenutog modela.
Abstract (english)
In this thesis we present an analysis of structure visible in synthetic polarimetric observations using Rotation measure synthesis and the Rolling Hough transform. We generated synthetic observations of polarized intensity over a range of radio frequencies for multiple magnetohydrodynamic models of compressible turbulent interstellar matter and a single model of a super-shell collision. It was found that depolarized structures in observations of the turbulent ISM show significant alignment only in models with a homogeneous magnetic field component, but that the sufficient strength was lesser than the values observed in the spiral arms of our Galaxy. Furthermore, it was shown that the percentage of depolarized pixels decreases with increasing kinematic viscosity, resistivity and strength of the homogeneous magnetic field component. Lastly, we have shown that super-shell collisions are detectable by radio polarimetric observations and that the visible structure largely depends on the synchrotron emitting local cosmic ray electron density.
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:217:476686
Study programmeTitle: Physics; specializations in: Research
Course: Research
Study programme type: university
Study level: integrated undergraduate and graduate
Academic / professional title: magistar/magistra fizike (magistar/magistra fizike)
Type of resourceText
File originBorn digital
Access conditionsOpen access
Terms of useLicence In copyright icon
Created on2021-01-08 09:30:17