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Kahniashvili, Tina and Maravin, Yurii and Natarajan, Aravind and Battaglia, Nick and Tevzadze, Alexander (2013) Constraining Primordial Magnetic Fields through Large-scale Structure. Astrophysical Journal, 770. pp. 47-54.
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Abstract
We study primordial magnetic field effects on the matter perturbations in the universe. We assume magnetic field generation prior to the big bang nucleosynthesis (BBN), i.e., during the radiation-dominated epoch of the universe expansion, but do not limit analysis by considering a particular magnetogenesis scenario. Contrary to previous studies, we limit the total magnetic field energy density and not the smoothed amplitude of the magnetic field at large (of the order of 1 Mpc) scales. We review several cosmological signatures, such as halo abundance, thermal Sunyaev-Zel'dovich effect, and Lyα data. For a cross-check, we compare our limits with that obtained through the cosmic microwave background faraday rotation effect and BBN. The limits range between 1.5 nG and 4.5 nG for nB in (- 3; -1.5).
| Item Type: | Article |
|---|---|
| Subjects: | Q Science > QB Astronomy Q Science > QC Physics |
| Depositing User: | Prof. Tina Kahniashvili |
| Date Deposited: | 29 Jan 2014 20:29 |
| Last Modified: | 27 Mar 2015 07:09 |
| URI: | http://eprints.iliauni.edu.ge/id/eprint/770 |
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