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Open Astronomy

formerly Baltic Astronomy

Editor-in-Chief: Barbuy, Beatriz


IMPACT FACTOR 2017 (Baltic Astronomy): 0.417
5-year IMPACT FACTOR (Baltic Astronomy): 0.486

CiteScore 2017: 0.16

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Source Normalized Impact per Paper (SNIP) 2017: 0.109

ICV 2017: 121.03

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2543-6376
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Volume 26, Issue 1

Issues

A problem with the analysis of type Ia supernovae

David F. Crawford
Published Online: 2017-12-14 | DOI: https://doi.org/10.1515/astro-2017-0013

Abstract

Type Ia supernovae have light curves that have widths and magnitudes that can be used for testing cosmologies and they provide one of the few direct measurements of time dilation. It is shown that the standard analysis that calibrates the light curve against a rest-frame average (such as SALT2) removes all the cosmological information from the calibrated light curves. Consequently type Ia supernovae calibrated with these methods cannot be used to investigate cosmology. The major evidence that supports the hypothesis of a static universe is that the measurements of the widths of the rawlight curves of type Ia supernovae do not show any time dilation. The intrinsicwavelength dependence shown by the SALT2 calibration templates is also consistent with no time dilation. Using a static cosmological model the peak absolute magnitudes of raw type Ia supernovae observations are also independent of redshift. These results support the hypothesis of a static universe.

Keywords: cosmology-miscellaneous; supernovae-general

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About the article

Received: 2017-08-16

Accepted: 2017-11-16

Published Online: 2017-12-14

Published in Print: 2017-12-20


Citation Information: Open Astronomy, Volume 26, Issue 1, Pages 111–119, ISSN (Online) 2543-6376, DOI: https://doi.org/10.1515/astro-2017-0013.

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© 2017. This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License. BY-NC-ND 4.0

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