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Title:Supernovae seen through gravitational telescopes
Authors:ID Petrushevska, Tanja (Author)
Files: This document has no files that are freely available to the public. This document may have a physical copy in the library of the organization, check the status via COBISS. Link is opened in a new window
Language:English
Work type:Not categorized
Typology:1.10 - Published Scientific Conference Contribution Abstract (invited lecture)
Organization:UNG - University of Nova Gorica
Abstract: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.
Keywords:lensed supernovae, strong lensing
Publication status:Published
Year of publishing:2018
PID:20.500.12556/RUNG-3919-3dae60cc-567e-4e9c-3149-bba53d6b949b New window
COBISS.SI-ID:5147387 New window
NUK URN:URN:SI:UNG:REP:138J5CE1
Publication date in RUNG:03.05.2018
Views:3192
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Record is a part of a monograph

Title:The Third Zeldovich Meeting
Place of publishing:Minsk, Belarus
Year of publishing:2018
Conference organizer:International Center for Relativistic Astrophysics Network

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