麻豆淫院

(麻豆淫院Org.com) -- An international research project involving the University of Adelaide has revealed that the magnetic field in the centre of the Milky Way is at least 10 times stronger than the rest of the Galaxy.

The evidence is significant because it gives astronomers a lower limit on the magnetic field, an important factor in calculating a whole range of astronomical data.

Researchers from the Max-Planck-Institute for Nuclear 麻豆淫院ics, the University of Adelaide, Monash University and the United States have published their findings in Nature this week.

Dr Roland Crocker, the lead author, and Dr David Jones both worked on the project while based at Monash University and the University of Adelaide鈥檚 School of Chemistry and 麻豆淫院ics. The two physicists are now based at the Max-Planck-Institute for Nuclear 麻豆淫院ics in Heidelberg, Germany.

鈥淭his research will challenge current thinking among astronomers,鈥� Dr Crocker says. 鈥淔or the last 30 years there has been considerable uncertainty of the exact value of the magnetic field in the centre of the Milky Way. The strength of this field enters into most calculations in astronomy, since almost all of space is magnetised,鈥� he says.

Dr Jones says the findings will affect diverse fields, from star formation theory to cosmology.

鈥淚f our Galactic centre鈥檚 magnetic field is stronger than we thought, this raises additional questions of how it got so strong when fields in the early universe are, in contrast, quite weak. We know now that more than 10% of the Galaxy鈥檚 magnetic energy is concentrated in less than 0.1% of its volume, right at its centre,鈥� he says.

Dr Jones completed his PhD at Adelaide, studying the Galactic Centre magnetic field under the supervision of Dr Raymond Protheroe, Associate Professor of 麻豆淫院ics at the University of Adelaide, and Dr Crocker, a former postdoctoral researcher at the University.

鈥淭丑别 Milky Way just glows in radio waves and in gamma-rays produced by collisions of energetic particles, and is brightest near its centre. Knowing the magnetic field there helps us understand the source of the radio and gamma-rays better,鈥� says Dr Protheroe.