A huge coronal hole has opened up in the sun: the plasma that comes out is blowing towards the ground at 700 km/s. The consequences? Spectacular boreal ear north of the world.
A calendar phenomenon of vast proportions is arousing the attention of scientists: A huge coronal hole, among the most gigantic in recent years, has opened up in the most external atmosphere of the sunThat is, in the crown, giving life to a huge flow of “solar wind” that has headed towards the space, also affecting our planet. The Solar Dynamics Observatory (SDO) of the NASA has captured impressive images of the structure, which It extends for most of the southern hemisphere of the sun.
What are coronal holes. The coronal holes are regions of the solar atmosphere, the crown, where the magnetic field opens towards the interplanetary space, instead of closing on itself. This allows the solar plasmanormally contained by the crown, of escape at high speed, generating a solar wind flow, That is, a constant flow of charged particles, mainly protons and electrons. These regions appear dark in the satellite images since the warm and brilliant plasma is less dense than the surrounding areas.
Solar wind towards the earth. In this case, the solar wind emitted by the Coronale hole is entitled to the earth and, as the Noaa (National Oceanic and Atmospheric Administration) had foreseen the spatial meteorologists), has reached our planet. The impact of this flow of charged particles could trigger G2 class geomagnetic storms.
Effects on earth. The Geomagnetic G2 storms are considered moderate and can cause Polar aurore from the interaction of solar particles with the terrestrial atmospheremaking them visible also to lower latitudes compared to usual. Sometimes they can cause high frequency radio communications disorders. In rare cases fluctuations can occur in the electrical network, but it is unlikely to cause significant damage And they can cause satellite problems in orbit, causing interruptions in communication and navigation services.
Last hours. The plasma that comes out of the coronal hole is “blowing” around our planet at an incredible speed of 700 km/s. Meanwhile, spectacular images of Aurore Boreali from the northernmost nations in the world come.
