New research suggests that the formation of magnetic fields in the wake of Cosmic strings may be a result of their travel. Scientists propose in a new paper that magnetic fields will explain the magnetism of the universe.
The universe has a magnetic field. Smaller objects, like planets and stars, have their magnetic fields generated by their own magnetic fields that are created by the swirling flows of charged particles in the air.
Astronomers have seen magnetic fields inside the stars. Weak fields can be generated in those cases.
The magnetic field on Earth is being attacked by a solar storm.
Magnetic fields are maintained by some of the largest objects in the universe. They're usually weak, around a millionth the strength of Earth's magnetic field, but they're also tremendous, in some cases stretching for millions of light years.
Astronomers don't know how clusters get their magnetism. You need charged particles to form a magnetic field. The universe was neutral before the first stars and galaxies appeared. The universe had to create a magnetic field because a neutral gas cannot generate it on its own.
The evolution of the universe changed the neutral gas into an electric charge and amplified the seed magnetic field. The source of the first magnetic field has been a mystery for a long time.
The most exotic explanation for the source of the universe's seed magnetic field is proposed in a new paper.
Cosmic strings are believed to have formed in the very early universe. Our universe went through several phases when it was less than two years old. All four forces of nature came together into one force. The unified force was split into the forces of gravity, the strong nuclear force, and the weak nuclear force.
The vacuum of space-time was changed by each split of the forces. The process may not have been perfect, and flaws may have appeared in space time. Wrinkles in a piece of paper are what some of the defects looked like. The strings are called the Cosmic strings.
Cosmic strings were discovered in the 1970s. Cosmic strings seem to be a prediction of all of our theories of the early universe, despite the fact that all searches have turned up empty.
Cosmic strings would be very weird if they existed. If you traveled in a circle around one and returned to your starting point, you would not have traveled as far as you could have. Cosmic strings vibrate with the ripples traveling up and down their length at the speed of light, and sometimes form loops that vibrate themselves to death in a frenzy of radiation.
The authors were able to turn the strings into generators of magnetic fields. Cosmic strings would leave ripples in the fabric of space-time as they traveled.
Waves in space-time can change the temperature and density of small pockets in the plasma. The differences could become the beginning of a magnetic field. It wouldn't be very strong, but it would be enough.
After the Cosmic strings left the area, the remaining plasma could be cooled and formed into stars, galaxies and clusters. Astronomers see the strengths of the initial field today.
The problem is that we don't know if the strings are real. The authors noted a possible observation signature of the strings. After the string has left, the wakes that generate magnetic fields persist. The wakes wash over Earth.
We might be able to see the remnants of space-time wakes with the next generation of detectors if there were enough Cosmic strings in the early universe. We might finally know what caused the universe to become magnetized once we know that Cosmic strings actually existed.
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