"Magnetic Fields of the Universe Preceeded Stars" --New Discovery
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January 02, 2013

"Magnetic Fields of the Universe Preceeded Stars" --New Discovery

 

 

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Following the Big Bang, the universe consisted only of nonmagnetic elements and particles. Now, a new mechanism has been discovered for the magnetisation of the universe even before the emergence of the first stars. Before the formation of the first stars, the luminous matter consisted only of a fully ionised gas of protons, electrons, helium nuclei and lithium nuclei which were produced during the Big Bang.

"All higher metals, for example, magnetic iron could, according to today's conception, only be formed in the inside of stars", says Reinhard Schlickeiser at the Institute of Theoretical Physics of the Ruhr-Universität Bochum. "In early times therefore, there were no permanent magnets in the Universe."

The parameters that describe the state of a gas are, however, not constant. Density and pressure, as well as electric and magnetic fields fluctuate around certain mean values. As a result of this fluctuation, at certain points in the plasma weak magnetic fields formed - so-called random fields. How strong these fields are in a fully ionised plasma of protons and electrons, has been calculated by Schlickeiser, specifically for the gas densities and temperatures that occurred in the plasmas of the early universe.

The result: the magnetic fields fluctuate depending on their position in the plasma, however, regardless of time - unlike, for example, electromagnetic waves such as light waves, which fluctuate over time. Everywhere in the luminous gas of the early universe there was a magnetic field with a strength of 10-20 Tesla, i.e. 10 sextillionth of a Tesla. By comparison, the earth's magnetic field has a strength of 30 millionths of a Tesla. In MRI scanners, field strengths of three Tesla are now usual. The magnetic field in the plasma of the early universe was thus very weak, but it covered almost 100 percent of the plasma volume.

Stellar winds or supernova explosions of the first massive stars generated shock waves that compressed the magnetic random fields in certain areas. In this way, the fields were strengthened and aligned on a wide-scale. Ultimately, the magnetic force was so strong that it in turn influenced the shock waves.

"This explains the balance often observed between magnetic forces and thermal gas pressure in cosmic objects", says Prof. Schlickeiser. The calculations show that all fully ionised gases in the early universe were weakly magnetised. Magnetic fields therefore existed even before the first stars. Next, the Bochum physicist is set to examine how the weak magnetic fields affect temperature fluctuations in the cosmic background radiation.

For more information: R. Schlickeiser (2012): Cosmic magnetization: from spontaneously emitted aperiodic turbulent to ordered equipartition fields, Physical Review Letters, DOI: 10.1103/PhysRevLett.109.261101 Journal reference: Physical Review Letters.

The Daily Galaxy via Ruhr-Universitaet-Bochum

Image credit: http://www.astro.ex.ac.uk/news.html

 

Comments

ELECTROMAGNETIC AND PLASMATIC UNIVERSE

Except from the conceptual Big Bang idea and the idea of formation of heavier elements that only can take place inside stars, the general ideas in this article are very fine.

Electric charge creates magnetic fields and magnetic fields induce electric charge.

If magnetism always has been, there is no formative beginning and no end and therefore no Big Bang but eternal formation between assembling and dissolution.

Ivar Nielsen
Natural Philosopher

From the time of the very auspicious inception of the civilization, mankind is continuing to find out the correct answer to the question about universe creation or creator. Aborigines have taking up the considerations of the causes by religious thoughts in different ways as consolations as there was no practical answer or solutions to the questions.

Pensive it mentioned the little serving as an example of my research results and see Interesting facts about the Universe, as I see it- New Discovery of the Universe. See at http://shahidurrahmansikder.wordpress.com/2011/05/18/


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