| | |
| | |
Stat |
Members: 3645 Articles: 2'503'724 Articles rated: 2609
24 April 2024 |
|
| | | |
|
Article overview
| |
|
Reionization constraints on primordial magnetic fields | Kanhaiya L. Pandey
; T. Roy Choudhury
; Shiv K. Sethi
; Andrea Ferrara
; | Date: |
1 Oct 2014 | Abstract: | We study the impact of the extra density fluctuations induced by primordial
magnetic fields on the reionization history in the redshift range: $6 < z <
10$. We perform a comprehensive MCMC physical analysis allowing the variation
of parameters related to primordial magnetic fields (strength, $B_0$, and
power-spectrum index $n_{scriptscriptstyle
m B}$), reionization, and
$Lambda$CDM cosmological model. We find that magnetic field strengths in the
range: $B_0 simeq 0.05{-}0.3$ nG (for nearly scale-free power spectra) can
significantly alter the reionization history in the above redshift range and
can relieve the tension between the WMAP and quasar absorption spectra data.
Our analysis puts upper-limits on the magnetic field strength $B_0 < 0.362,
0.116, 0.057$ nG (95 % c.l.) for $n_{scriptscriptstyle
m B} = -2.95, -2.9,
-2.85$, respectively. These represent the strongest magnetic field constraints
among those available from other cosmological observables. | Source: | arXiv, 1410.0368 | Services: | Forum | Review | PDF | Favorites |
|
|
No review found.
Did you like this article?
Note: answers to reviews or questions about the article must be posted in the forum section.
Authors are not allowed to review their own article. They can use the forum section.
browser Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)
|
| |
|
|
|
| News, job offers and information for researchers and scientists:
| |