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master's thesis
Korelacija između kinetičkog Sunayev-Zel'dovich efekta i kozmološkog 21 cm signala neutralnog vodika
Zagreb: University of Zagreb, Faculty of Science, 2020. urn:nbn:hr:217:900438
Nikolić, Ivan
University of Zagreb
Faculty of Science
Department of Physics

Institutional repository: Repository of the Faculty of Science

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Nikolić, I. (2020). Korelacija između kinetičkog Sunayev-Zel'dovich efekta i kozmološkog 21 cm signala neutralnog vodika (Master's thesis). Zagreb: University of Zagreb, Faculty of Science. Retrieved from https://urn.nsk.hr/urn:nbn:hr:217:900438

Nikolić, Ivan. "Korelacija između kinetičkog Sunayev-Zel'dovich efekta i kozmološkog 21 cm signala neutralnog vodika." Master's thesis, University of Zagreb, Faculty of Science, 2020. https://urn.nsk.hr/urn:nbn:hr:217:900438

Nikolić, Ivan. "Korelacija između kinetičkog Sunayev-Zel'dovich efekta i kozmološkog 21 cm signala neutralnog vodika." Master's thesis, University of Zagreb, Faculty of Science, 2020. https://urn.nsk.hr/urn:nbn:hr:217:900438

Nikolić, I. (2020). 'Korelacija između kinetičkog Sunayev-Zel'dovich efekta i kozmološkog 21 cm signala neutralnog vodika', Master's thesis, University of Zagreb, Faculty of Science, accessed 11 January 2025, https://urn.nsk.hr/urn:nbn:hr:217:900438

Nikolić I. Korelacija između kinetičkog Sunayev-Zel'dovich efekta i kozmološkog 21 cm signala neutralnog vodika [Master's thesis]. Zagreb: University of Zagreb, Faculty of Science; 2020 [cited 2025 January 11] Available at: https://urn.nsk.hr/urn:nbn:hr:217:900438

I. Nikolić, "Korelacija između kinetičkog Sunayev-Zel'dovich efekta i kozmološkog 21 cm signala neutralnog vodika", Master's thesis, University of Zagreb, Faculty of Science, Zagreb, 2020. Available at: https://urn.nsk.hr/urn:nbn:hr:217:900438

Metadata
TitleKorelacija između kinetičkog Sunayev-Zel'dovich efekta i kozmološkog 21 cm signala neutralnog vodika
Title (english)Cross-correlation between kinetic Sunyaev-Zel'dovich effect and cosmic 21 cm signal of neutral hydrogen
AuthorIvan Nikolić
MentorVibor Jelić (mentor)
MentorKrešimir Pavlovski (komentor)
Committee memberKrešimir Pavlovski (predsjednik povjerenstva)
Committee memberVibor Jelić (član povjerenstva)
Committee memberIvica Smolić (član povjerenstva)
Committee memberMaro Cvitan (član povjerenstva)
Committee memberMatko Milin (član povjerenstva)
GranterUniversity of Zagreb
Faculty of Science
(Department of Physics)
Zagreb
Defense date and country2020-07-16, Croatia
Scientific / art field,
discipline and subdiscipline		NATURAL SCIENCES
Physics
Abstract
Kinetički Sunyaev-Zel’dovich (kSZ) efekt je efekt koji nastaje Thomsonovim raspršenjem fotona mikrovalnog kozmičkog zračenja na slobodnim elektronima ionizirane međugalaktičke tvari. Raspršenjem fotona na elektronima stvara se sekundarna anizotropija u mikrovalnom pozadinskom zračenju. kSZ efekt se može koristiti kao proba ionizirane materije u astrofizičkim promatranjima. Kozmološki 21 centimetarski signal dolazi od hiperfinog prijelaza neutralnog vodika i proba je neutralne materije. U ovom radu korištena je semi-numerička simulacija kSZ efekta i signala 21 centimetarske linije, 21cmFAST za istraživanje kSZ efekta u vrijeme epohe reionizacije. Također promatrana je i korelacija kozmološkog 21 cm signala i kSZ signala te je dobivena ovisnost korelacije u epohi reionizacije. Korelacija ovisi o mehanizmu kojim se materija reionizira te periodu reionizacije Svemira. Također su promatrani drugi alati za promatranje korelacije.
Abstract (english)
Kinetic Sunyaev-Zel’dovich (kSZ) effect is an effect originating from Thomson scattering between cosmic microwave background photons and free electrons in the reionized medium. Scattering of photons on electrons creates a secondary anisotropy in the cosmic microwave background. The kSZ effect can be used to probe the ionized matter in the astrophysical observations. The Cosmic 21-centimeter signal comes from the hyperfine transition of neutral hydrogen and is the probe of the neutral matter. In this work semi-numerical simulation of kSZ signal and 21-centimeter signal, 21cm- Fast is used to study the kSZ effect at the epoch of reionization. Cross-correlation between the cosmic 21 cm signal and kSZ signal is observed as well and the evolution of correlation was obtained at the epoch of reionization. Correlation depends on the mechanism by which the medium is reionized and on the stage of the epoch of reionization. Other tools for measuring correlation were also explored.
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:217:900438
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 09:44:23