Tagged with "SUN"
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]

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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:

https://www.youtube.com/watch?v=hZ41L...

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.

C2.5(00:49)
C3.2(02:25)
C5.4(03:32)
C9.0(05:37)
C2.8(11:19)
C3.1(14:40)
C8.6(14:58)
M3.9(09:00)
M4.5(16:00)
M1.7(19:53)
M1.2(22:43)
C4.2(11:05)
C5.8(12:08)
C3.9(15:50)
C4.7(17:30)
C2.1(20:24)

Links here:

http://www.solarmonitor.org/index.php...

http://sdo.gsfc.nasa.gov/data/

also monitor :


http://www.swpc.noaa.gov/
http://sohowww.nascom.nasa.gov/data/a...
http://iswa.ccmc.gsfc.nasa.gov:8080/I...
http://helioviewer.org/
http://space.rice.edu/ISTP/#RT
http://www.ips.gov.au/Space_Weather
http://sidney.spaceweather.gc.ca/inde...

 

X1-CLASS SOLAR FLARE
Category: Sun Activity
Tags: Sun activity


http://spaceweather.com/

X1-CLASS SOLAR FLARE: This comes as no surprise. Behemoth sunspot AR2192 has unleashed an X1-class solar flare. NASA's Solar Dynamics Observatory recorded the blast in this extreme UV image of the sun on Oct. 19th (0500 UT):

A pulse of ultraviolet and X-radiation from the flare caused a brief but strong HF radio blackout on the dayside of Earth, mainly over Asia and Australia. Also, the explosion probably hurled a CME into space. This possibility has not yet been confirmed by SOHO coronagraph data. If a CME is forthcoming, it will probably sail wide of Earth due to the sunspot's location near the sun's eastern limb.

Big sunspots tend to produce big flares, and clearly AR2192 is no exception. More X-flares are likely as AR2192 turns toward Earth in the days ahead. Also, if you have a solar telescope, point it at the sun. This active region is a real beauty.

 
 

 

 



 

 
 
 

 

 
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