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UNIVERSITY OF BUCHAREST
FACULTY OF PHYSICS Guest
2024-11-22 2:18 |
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Conference: Bucharest University Faculty of Physics 2004 Meeting
Section: Atomic and Molecular Physics; Astrophysics
Title:
Hubble diagrams with gamma-ray bursts
Authors:
Valeriu Tudose
Affiliation:
Astronomical Institute of the Romanian Academy
E-mail
Keywords:
Hubble diagramms, supernovae
Abstract:
In special relativity (SR), the cosmological redshift is interpreted as arising due to the movement through space, while in general relativity (GR) the space itself is in expansion and therefore the redshift is merely an indication of the movement. Usually, it is taken as granted that GR and not SR is necessary to describe cosmological observations. Using Hubble diagrams, it was shown recently that the high-z type Ia supernovae data (z<1) are inconsistent with a SR interpretation of the redshift. Here we extend the z parameter space up to 4.5 and provide support for the previous finding, by taking advantages of a different class of objects, namely gamma-ray bursts.
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