2021-10-24

Research: a huge “magnetic tunnel” may surround the earth and the whole solar system

By yqqlm yqqlm

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this connection forms what looks like a tunnel around our solar system

Research: a huge “magnetic tunnel” may surround the earth and the whole solar system

“if we look up at the sky,” West said, “we will see this tunnel like structure in almost every direction — that is, if we have a pair of eyes that can see radio light.”

West said that it is called “North Silver pole branch” (north polar spur) and “fan region” In fact, astronomers have known these two structures for decades. But most scientific explanations focus on them. West and her colleagues believe that they are the first astronomers to connect them as a unit.

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these structures It is composed of charged particles and magnetic fields. It is shaped like a long rope and is located about 350 light-years away from us – about 1000 light-years long.

“this is equivalent to traveling two trillion times between Toronto and Vancouver.” West said.

West has been thinking about these features intermittently for 15 years since she first saw the map of the radio sky. Recently, she built a computer model to calculate what the radio sky would look like from the earth when she changed the shape and position of the long rope. This model allows West to “build” The structure around us and showed her what the sky looked like through our telescope. It was this new perspective that helped her match the model to the data.

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West means: “A few years ago, one of our co authors, Tom Landecker, told me a 1965 paper — from the early days of radio astronomy, West said,” according to the rough data at that time, the authors (Mathewson and Milne) It is speculated that these polarized radio signals may come from our view of the local arm of the Milky Way galaxy and from its interior. That paper inspired me to develop this idea and connect my model with the large amount of better data provided by our telescope today. ”

West take the map of the earth as an example. The north pole is above and the equator crosses in the middle — unless the map is redrawn from a different angle. So is the map of our Milky Way galaxy. “When most astronomers look at the map, the north pole of the Milky way is above and the center of the Milky way is in the middle. An important part of stimulating this idea is to recreate the map with different points in the middle.”

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“it’s an extremely smart job,” Bryan Gaensler, a professor at the Dunlap Institute and author of the publication, said, “when jennier first promoted this to me, I thought it was too’outrageous’ and it could not be a possible explanation. But she finally convinced me. Now, I’m glad to see how other people in the astronomical community react.”

as an expert in the study of magnetism in galaxies and interstellar media, West looks forward to more possible discoveries related to this study. “Magnetic fields do not exist in isolation, they must all be connected to each other. Therefore, the next step is to better understand how this local magnetic field is connected to the larger galactic magnetic field and the smaller magnetic field of our sun and earth.”

at the same time, West also agrees with the new “tunnel” The model not only brings new insights to the scientific community, but also a pioneering concept for the rest of us. “I think it’s great to imagine that these structures are everywhere whenever we look up at the night sky,” West said