免费看黄色大片-久久精品毛片-欧美日韩亚洲视频-日韩电影二区-天天射夜夜-色屁屁ts人妖系列二区-欧美色图12p-美女被c出水-日韩的一区二区-美女高潮流白浆视频-日韩精品一区二区久久-全部免费毛片在线播放网站-99精品国产在热久久婷婷-午夜精品理论片-亚洲人成网在线播放

Solar wind strikes Earth's boundary like hitting giant drum

Source: Xinhua| 2019-02-13 01:18:44|Editor: yan
Video PlayerClose

WASHINGTON, Feb. 12 (Xinhua) -- Space is not quiet. An international team of scientists found that when high-energy particles from the sun struck the boundary of the protective magnetic bubble surrounding Earth, they banged like hitting a giant drum.

The study published on Tuesday in the journal Nature Communications showed that the protective magnetic bubble called magnetopause vibrated against a jet of plasma from the sun, with waves echoing back and forth along its surface.

The newly discovered waves are a type of surface waves that require some sort of boundary to travel along, according to the scientists who used data from NASA's THEMIS, a two-year mission consisting of five identical probes to investigate physical process in near-Earth space.

When a plasma jet or the "drumstick" hits Earth's boundary, surface waves form a standing wave pattern: the ends appear to be standing still while other points vibrate back and forth, just like a drumhead.

The fixed points in the wave, the rim of the drum, are near Earth's magnetic poles while the waves vibrate the surface of the magnetopause in between, according to the study.

The vibrations work their way down into the magnetosphere and trigger other types of waves, "which affect things like radiation belts, the aurora, and even the ionosphere," said Martin Archer, space physicist at Queen Mary University of London and lead author of the new paper.

Understanding the mechanics of the magnetopause is key to helping keep Earth's satellites, telecommunications and astronauts safe from the potentially harmful radiation these particles bring.

The findings may also help provide insights into how to look for this phenomenon at other planets with magnetospheres, like Jupiter and Saturn.

TOP STORIES
EDITOR’S CHOICE
MOST VIEWED
EXPLORE XINHUANET
010020070750000000000000011105521378164351