'Putting together this 3D map of the Local Bubble will help us examine superbubbles in new ways.'
Previous studies on the Local Bubble have relied on most data from the. Gaia was used to find out the location of cosmic dust, along with measuring the positions and motions of stars, "charting its local concentrations and showing the approximate boundaries of the Local Bubble."
O'Neill and colleagues combined the data from Gaia with data from Planck, another European Space Agency-led telescope. This spacecraft compiled measurements of microwave wavelength light from all over the sky. The researchers used a part of Planck observations that trace emission from dust within the Milky Way relevant to helping map the Local Bubble's magnetic field."Studying these magnetic fields has been notoriously difficult.
First, "most of the interstellar dust producing the polarization observed lies in the Local Bubble's surface. And, second, theories predicting that the magnetic field would be "swept up" into the bubble's surface as it expands are correct," as per the release. The researchers assumed that most of the dust and the magnetic activity would be located on the surface of the bubble. They then carried out the complicated geometrical analysis needed to create the 3D magnetic field map.of a magnetic field;it'ss by no means a perfect picture"" Goodman said, likening the research team to pioneering mapmakers who created some of the first maps of Earth.
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