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Title:Supernovae seen through gravitational telescopes
Authors:ID Petrushevska, Tanja, Oskar Klein Centre, Department of Physics, Stockholm University, SE 106 91 Stockholm, Sweden (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:3.25 - Other Performed Works
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
Publication status:Published
Year of publishing:2017
PID:20.500.12556/RUNG-3668-c2d30917-747b-5054-9bb4-ceab7e38c920 New window
COBISS.SI-ID:5041147 New window
NUK URN:URN:SI:UNG:REP:XXYZSQRO
Publication date in RUNG:06.02.2018
Views:2862
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Record is a part of a monograph

Title:Supernovae seen through gravitational telescopes
Place of publishing:The Kavli Foundation | SLAC National Accelerator Laboratory | Stanford University
Year of publishing:2017
Conference organizer:The Kavli Foundation | SLAC National Accelerator Laboratory | Stanford University

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