The new 3D-map of the Milky Way will help to solve the old riddle of the cosmos
A new study by the Australian National University has created a three-dimensional map of the magnetic field in a small wedge of the Milky Way galaxy that paves the way for future discoveries that will improve our understanding of the origin and evolution of the universe. Study leader Dr. Aris Tritsis from the Research School of Astronomy and Astrophysics ANU said that this was the first study that has allowed tomographic gauge the strength of the magnetic field of our galaxy.
of the magnetic field map Milky Way
"Our work paves the way for future discoveries concerning the evolution of the Milky Way, the formation of stars and planets, and the early stages of the universe," says Dr. Tritsis.
The magnetic field of the galaxy and cosmic dust are like a veil that hides the light of early stages of the universe - known as the cosmic microwave background - and hinders the scientists to test cosmological models of the evolution of the universe.
For comparison, 15 microg (microgauss), which are usually measured in the interstellar medium - is 10 million times smaller than the force of the magnet on the fridge. Despite the small amount and length of tens or hundreds of light-years, it is extremely important for all processes, which we have called earlier.
"Now we have a means of mapping the magnetic field strength for all regions of our galaxy, which allows us to better understand the evolution of the universe," says Dr. Tritsis. "This work demonstrates that such an ambitious study is feasible. The next step - the first complete three-dimensional map of the magnetic field of the galaxy, and explore all the other astrophysical processes that depend on it. "
The detected strength of the magnetic field of the galaxy was much higher than previously thought.
Most models that predict the strength of the magnetic field of our galaxy for each location and distance from the Sun, based on observations that can not investigate the magnetic field in three dimensions. The new model will help to understand how high-energy cosmic rays pass through our galaxy.
Cosmic rays - extremely energetic particles whose energies are often much higher than those that can achieve.
"Understanding the structure and strength of the magnetic field, we can increase our chances of finding the location of these sources are extremely energetic particles, and will be able to explore new physics at extreme energies," the scientists say. The study was published in The Astrophysical Journal.
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