Tagged with "SUN"
Sunspot AR2192 seen with naked eyes
Category: Sun Activity
Tags: Sunspot AR2192


GIANT SUNSPOT CRACKLING WITH FLARES: AR2192 is the biggest sunspot in nearly 25 years, and it is still growing. The active region now covers 2750 millionths of the solar disk, an area equivalent to 33 planet Earths skinned and spread out flat. It is so large that sky watchers are seeing it with the naked eye when the sun is dimmed by low-hanging clouds or, in this case, dense fog:

Barry Freas took the picture on October 26th from Red Hill, Kentucky. "It was a very foggy morning," he says. "AR2192 was remarkable."

Big sunspots tend to produce strong flares, and AR2192 is no exception. It is crackling with magnetic activity. In the past three days alone it has unleashed 3 X-class flares and 8 M-flares. The most intense of these flares have caused HF radio blackouts and other communication disturbances on the dayside of Earth.

Usually, strong flares are accompanied by massive CMEs--billion-ton clouds of electrified gas that billow away from the blast site. So far, however, none of the eruptions from AR2192 has produced a major CME. Without a series of CMEs to hit Earth and rattle our planet's magnetic field, there have been no geomagnetic storms nor any widespread auroras.

More eruptions are in the offing. NOAA forecasters estimate an 85% chance of M-class flares and a 55% chance of X-flares during the next 24 hours.  


Huge Magnetic 'Ropes' Drive Powerful Sun Explosions Tags: Sun activity Solar Flares Science Space

Huge Magnetic 'Ropes' Drive Powerful Sun Explosions

By Charles Q. Choi, Space.com Contributor   |   October 22, 2014 ShortURL

View of a typical solar eruption using data from NASA's Solar Dynamic Observatory spacecraft. Earth depicted for scale.
Credit: Tahar Amari/Centre de physique théorique, CNRS-Ecole Polytechnique, France

Eruptions on the sun's surface are probably caused by giant, unstable magnetic plasma arches, a new study reports — a discovery that brings scientists one step closer to predicting solar outbursts that can wreak havoc on Earth.

Astronomers have long observed gigantic arches of plasma emerging from the surface of the sun. Known as magnetic flux ropes, coronal loops and solar prominences, these structures possess spiraling magnetic field lines, as if a huge bar magnet had been twisted into a corkscrew. A vast amount of electric current typically runs through the core of each of these tubes.

Scientists have long thought magnetic flux ropes drive powerful solar explosions such as coronal mass ejections (CMEs), which can spawn geomagnetic storms that damage satellites in space and disrupt power grids on Earth. [The Sun's Wrath: Worst Solar Storms in History]




10/20/2014 -- FIVE M-class solar flares in a row -- Earth Facing Side of the Sun
Category: Sun Activity
Tags: Sun activity Solar Flares

Published on 20 Oct 2014

After the X1.1 flare a day ago, the same area: Active Region 12192 , has now produced FIVE back to back M-class flares.

Watch the X-class flare from October 19, 2014 here:


All these events happening on the Earth facing side of the Sun, as the spot has come across the Eastern limb.

Luckily, the X1.1 produced a solar wind blast that was not Earth directed (particle density in the solar wind).... the X1.1 sending only a glancing blow at best, even though it occurred on the Earth facing side of the Sun.

These FIVE subsequent M class flares are from the same region, which could send some energy towards Earth over the next few days (normally takes 2-3 days for any particles associated with solar flares to reach Earth).

Nothing particularly strong, but rather long in duration in the M-class range, which could lead to geomagnetic instability , as we have seen in the past -- which leads to overall Earthquake activity increases.

Keep watch over the next 2-3 days as these M-class flares possibly arrive. Will have to wait to see what the official trajectories of each flare come out to.


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