قالب وردپرس درنا توس
Home / Science / Scientists have discovered the source of dangerous high-energy solar particles that may threaten the earth

Scientists have discovered the source of dangerous high-energy solar particles that may threaten the earth



Scientists have found the exact source of the dangerous rays that are emitted from the sun and threaten the activities of the earth.

Energetic particles are ejected from the sun during solar storms in the outer atmosphere.

They may have extremely important meaning and harm to life on Earth: they may not only potentially harm air passengers and satellites, but scientists worry that one day they may be hit by a destructive storm, which may cause damage. More lasting and greater destruction.

In 1859, a large solar storm called the Carrington event caused widespread problems in the telegraph system in Europe and the United States.

Given our dependence on electricity today, repeated storms of this magnitude could be even more destructive.

Researchers at University College London (UCL) and George Mason University in the United States believe that they have found the location of these particles from the sun to better predict when they might strike again.

Their findings, published in the journal “Science Advances”, show that these particles have the same “fingerprint” as the plasma located low in the lower part of the solar corona and close to the middle of the solar atmosphere.

UCL co-author Dr. Stephanie Yardley said: “In our research, we have observed for the first time that the high-energy particles of the sun come from the sun exactly.

“Our evidence supports the theory that these highly charged particles come from a plasma that is pushed down in the solar atmosphere by a strong magnetic field.

Once these high-energy particles are released, they will explode at a speed of several thousand kilometers per second.

“Energetic particles can reach Earth quickly within minutes to hours, and these events last for several days.

“At present, we can only predict these events because it is very difficult to predict before these events occur.

“By better understanding the course of the sun, we can improve our forecasts so that in the event of a major solar storm, we have time to take action to reduce the risk.”

The researchers made the discovery using measurements from the Nasa wind satellite located between the sun and the earth.

They looked at many solar high-energy particle streams in January 2014, each of which lasted at least one day.

The lead author of George Mason University, Dr. David Brooks, added: “Our observations provide a tantalizing glimpse that the material that produces the sun’s energetic particles comes from sources in several events in the last solar cycle.

“We are now starting a new solar cycle, and once it starts, we will use the same technique to see if our results are roughly correct, or if these events are abnormal.

“We feel fortunate that due to the data that will be obtained from two spacecraft-ESA’s Solar Orbiter and NASA’s Parker Solar Probe-our understanding of the mechanisms behind solar storms and solar energetic particles is possible. It will develop rapidly in the next few years. It is closer to the sun than any previous spacecraft.”

Supplementary report by the Press Association


Source link