| Naslov: | Supernovae seen through gravitational telescopes |
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| Avtorji: | ID Petrushevska, Tanja, Department of Physics, Faculty of Science, Stockholm University The Oskar Klein Centre for CosmoParticle Physics, Sweden (Avtor) |
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| Datoteke: |
Gradivo nima datotek, ki so prostodostopne za javnost. Gradivo je morda fizično dosegljivo v knjižnici fakultete, zalogo lahko preverite v COBISS-u.  |
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| Jezik: | Angleški jezik |
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| Vrsta gradiva: | Delo ni kategorizirano |
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| Tipologija: | 3.14 - Predavanje na tuji univerzi |
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| Organizacija: | UNG - Univerza v Novi Gorici
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| Opis: | Galaxies, and clusters of galaxies, can act as gravitational lenses and magnify the light of objects behind them. The effect enables observations of very distant supernovae, that otherwise would be too faint to be detected by existing telescopes, and allows studies of the frequency and properties of these rare phenomena when the universe was young. Under the right circumstances, multiple images of the lensed supernovae can be observed, and due to the variable nature of the objects, the difference between the arrival times of the images can be measured. Since the images have taken different paths through space before reaching us, the time-differences are sensitive to the expansion rate of the universe. One class of supernovae, Type Ia, are of particular interest to detect. Their well known brightness can be used to determine the magnification, which can be used to understand the lensing systems. I will also report our discovery of the first resolved multiply-imaged gravitationally lensed supernova Type Ia. |
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| Ključne besede: | supernovae |
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| Kraj izvedbe: | Ljubljana |
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| Leto izvedbe: | 2017 |
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| PID: | 20.500.12556/RUNG-3671-7fc27f5b-1b81-d991-4189-3f91b09c54d5 |
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| COBISS.SI-ID: | 5024251 |
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| NUK URN: | URN:SI:UNG:REP:VBEL5TMH |
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| Datum objave v RUNG: | 26.01.2018 |
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| Število ogledov: | 3567 |
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| Število prenosov: | 0 |
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| Metapodatki: |    |
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