Since many years, the scientists in Canada have been observing the sky over there to watch dim strand of purple light spreading across the country. That looks like a piece of the Aurora Borealis, which is also known as the northern light. When the solar particles come into the contact of the magnetic field of the Earth, that process produces the aurora borealis. The scientists have named that as Steve- the Strong Thermal Emission Velocity Enhancement. As per the latest report, Steve has been detected in the UK.
A study paper which has been published in the journal Science Advances by the American Association for the Advancement of Science stated that the aurora borealis light Steve is like the phenomena named Sub-Auroral Ion Drift, in short SAID. In this process, ions move quickly from east zone to west zone. SAID generates from the interaction between solar particles and the magnetosphere. Steve looks like a running ribbon and carries few hues of green.
A few days ago, on 19th March it was detected spreading from the isles of Skye and Lewis in the north of Scotland. Talking about this, NASA stated that Steve could cover hundreds or thousands of miles and it has been also detected in the UK, Canada, Alaska and New Zealand.
Elizabeth A MacDonald, the space physicist at Nasa’s Goddard Space Flight Center stated “It’s something that we know that’s actually been studied for 40 years. But they have never been seen to have this optical component.” Some people also reported that they have seen Steve in Argyll and Wester Ross. At the same time, the lights were also seen in Shetland, Caithness, and Aberdeenshire. This is for the first time scientists have detected Steve in presence of the Northern Lights. Well, this new finding has forced scientists to find out how the two light events which emit colors are connected.
MacDonald further stated that Steve is quite different from the other auroras like the Aurora Borealis. MacDonald informed, when charged particles from the sun interact with the magnetic field, they create auroras. But that process didn’t clearly describe about the purple stripes of the Steve. May be there are more physics behind this, MacDonald added.
In July 2017, scientists had announced that Steve was something unique. It occurs when solar particles actuate rapidly from east to west, interacting with the electrical and magnetic fields of Earth. The interaction point is around sixty degrees north of the equator. Since 1970, the scientists have been thinking that it is a flow of hot, fast-moving particles, but they didn’t know that it consisted a visual phenomenon. MacDonald and the team analyzed the data from Swarm. It is a constellation of satellites operated by the European Space Agency.