| Issue |
A&A
Volume 471, Number 1, August III 2007
|
|
|---|---|---|
| Page(s) | 59 - 63 | |
| Section | Cosmology (including clusters of galaxies) | |
| DOI | https://doi.org/10.1051/0004-6361:20077384 | |
| Published online | 25 May 2007 | |
The tension of cosmological magnetic fields as a contribution to dark energy
Research Center for Astronomy, Academy of Athens, 11527 Athens, Greece e-mail: [icontop;svasil]@academyofathens.gr
Received:
1
March
2007
Accepted:
14
May
2007
We propose that cosmological magnetic fields generated
in regions of finite spatial dimensions may manifest
themselves in the global dynamics of the Universe as
“dark energy”. We test our model in the
context of spatially flat cosmological models by
assuming that the Universe contains
non-relativistic matter 
,
dark energy 
,
and an extra fluid with 
that corresponds to the magnetic field.
We place constraints on the main cosmological parameters
of our model by combining the recent supernovae type Ia data
and the differential ages of passively evolving galaxies.
In particular, we find that the model which best reproduces the
observational data when 
= 0.26 is one with
0.03, 
7.68,
0.71 and 
-0.8.
Key words: cosmology: theory / magnetic fields
© ESO, 2007
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