The boundaries of the Earth's heliosphere have been mapped - Texasnewstoday.com

In 2009, using the Interstellar Boundary Explorer, also known as NASA’s IBEX, astronomers spy on strange ribbon-like structures that dance between the solar system and other interstellar spaces.

The discovery of the telescope and the IBEX ribbon, which is invisible to the human eye, was one of the first understandings of scientists about the heliosphere, a bubble-like shield made of the solar wind.

A new study published in the Astrophysical Journal maps the entire boundary of this shield, and the data collected could be used to signal the arrival of a new era of solar physics exploration.

“Most instruments that detect particles in space detect charged particles,” said Daniel Reisenfeld, senior scientist and lead author of the study at the Los Alamos National Laboratory in New Mexico. But IBEX is unique.

Detects energetic neutral atoms, ENA. Originally away from the Sun, these ions collide with interstellar electrons and neutralize them. These atoms are found throughout the universe, and observing ENA flux over time can be a powerful imaging tool.

So what exactly was that mysterious ribbon? Since then, scientists have determined that they are seeing a huge band of ENA that illuminates the night sky.

Using the data IBEX collected by ENA, researchers created a three-dimensional map of the entire heliosphere, graphing only one 11-year solar cycle, the time between shifts in the sun’s magnetic field. ..

“Our Earth is constantly being hit by cosmic rays, galactic cosmic rays,” he says. These rays can subtly affect planes flying near the poles. Often a trip between Europe or Asia and the United States.

Scientists say that in order to study the astrospheres of another planet called the heliosphere when surrounding other stars, you first need to understand yourself.

“Many physical models currently being developed are based on the discovery of the IBEX mission,” says Nikolai Pogorelov, a professor of space science at the University of Alabama in Huntsville. “This isn’t just experimental,” he said. [a] The real purpose. “

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2021-07-07 17:59:47Z
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