A Possible Dynamical Effect of a Primordial Magnetic Field

1997 ◽  
Vol 490 (2) ◽  
pp. 488-492 ◽  
Author(s):  
Jose C. N. de Araujo ◽  
Reuven Opher
Keyword(s):  
Magnetic Field ◽  
Dynamical Effect ◽  
Primordial Magnetic Field

scholarly journals Probing the reheating phase through primordial magnetic field and CMB

2021 ◽  
Vol 103 (10) ◽  
Author(s):  
Md Riajul Haque ◽  
Debaprasad Maity ◽  
Sourav Pal
Keyword(s):  
Magnetic Field ◽  
Primordial Magnetic Field

scholarly journals Primordial magnetic field limits from cosmological data

2010 ◽  
Vol 82 (8) ◽  
Author(s):  
Tina Kahniashvili ◽  
Alexander G. Tevzadze ◽  
Shiv K. Sethi ◽  
Kanhaiya Pandey ◽  
Bharat Ratra
Keyword(s):  
Magnetic Field ◽  
Cosmological Data ◽  
Primordial Magnetic Field

scholarly journals Primordial Magnetic Field Effects on the CMB and Large-Scale Structure

2010 ◽  
Vol 2010 ◽  
pp. 1-19 ◽  
Author(s):  
Dai G. Yamazaki ◽  
Kiyotomo Ichiki ◽  
Toshitaka Kajino ◽  
Grant J. Mathews
Keyword(s):  
Magnetic Field ◽  
Magnetic Fields ◽  
Large Scale ◽  
Large Scale Structure ◽  
Big Bang ◽  
Scale Structure ◽  
Magnetic Field Effects ◽  
Power Spectral ◽  
Primordial Magnetic Field ◽  
The Big Bang

Magnetic fields are everywhere in nature, and they play an important role in every astronomical environment which involves the formation of plasma and currents. It is natural therefore to suppose that magnetic fields could be present in the turbulent high-temperature environment of the big bang. Such a primordial magnetic field (PMF) would be expected to manifest itself in the cosmic microwave background (CMB) temperature and polarization anisotropies, and also in the formation of large-scale structure. In this paper, we summarize the theoretical framework which we have developed to calculate the PMF power spectrum to high precision. Using this formulation, we summarize calculations of the effects of a PMF which take accurate quantitative account of the time evolution of the cutoff scale. We review the constructed numerical program, which is without approximation, and an improvement over the approach used in a number of previous works for studying the effect of the PMF on the cosmological perturbations. We demonstrate how the PMF is an important cosmological physical process on small scales. We also summarize the current constraints on the PMF amplitudeBλand the power spectral indexnBwhich have been deduced from the available CMB observational data by using our computational framework.

The primordial magnetic field preserved in chondrules of the Allende meteorite

1978 ◽  
Vol 5 (1) ◽  
pp. 73-76 ◽  
Author(s):  
M. Lanoix ◽  
D. W. Strangway ◽  
G. W. Pearce
Keyword(s):  
Magnetic Field ◽  
Primordial Magnetic Field

PRIMORDIAL MAGNETIC FIELD AND SPECTRAL DISTORTION OF COSMIC BACKGROUND RADIATION

1998 ◽  
Vol 07 (03) ◽  
pp. 489-498 ◽  
Author(s):  
DENIS PUY ◽  
PATRICK PETER
Keyword(s):  
Magnetic Field ◽  
Background Radiation ◽  
Cosmic Background Radiation ◽  
Spectral Distortion ◽  
Free Electrons ◽  
Cosmic Background ◽  
Cyclotron Radiation ◽  
Primordial Plasma ◽  
Primordial Magnetic Field ◽  
Recombination Epoch

The role played by a primordial magnetic field during the pre-recombination epoch is analysed through the cyclotron radiation (due to the free electrons) it might produce in the primordial plasma. We discuss the constraint implied by the measurement or lack thereof COBE on this primordial field.

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