The Sun's Magnetic Field will reverse

This event is not a sign of the doomsday, this is a normal event that occurs every 11 years. In the coming months, predict solar magnetic field polarity reverses, the north and south magnetic poles will switch positions with each other. But scientists assure that change will not lead to an increase in solar storms or other events that could lead to the devastating effects of the Earth and its contents.

This stunning space wallpaper shows the view of the sun from the SWAP (Sun Watcher using Active Pixel System detector and Image Processing) instrument onboard ESA's Proba-2 satellite. (Picture from: http://www.livescience.com/)

"The world will not end tomorrow," said Phil Scherrer, solar physicist at Stanford University in California, as told to SPACE on August 12, 2013. Solar polarity reversal is completely normal behavior, happens every 11 years at the peak of the solar activity cycle. But the reversal of the magnetic field did not affect the increase in solar storms and explosions superheated plasma, or Coronal Mass Ejection (CME). Both of these events are usually increased sharply during the peak of solar activity.

The sun's magnetic field is gearing up to shift, which happens once every 11 years, according to NASA officials. (Picture from: http://storiesbywilliams.com/)

"Reversal is more like an indicator rather than the cause of something," says solar physicist Todd Hoeksema, Director of the Wilcox Observatory at Stanford University. "However, this change will cause a ripple effect throughout the solar system."

The Earth was orbiting the Sun will be affected by the current wave of electricity from the Solar Equator. NASA officials says that it's the wave of transition process can create a space storms climate around the Earth.

Although the polarity shift that can lead to climate storm, from a human perspective, the the polarity reversal effect probably will give a slight advantage. For example, polarity reversal will cause the "current sheet" (a broad surface that extends from the solar equator where the sun's magnetic field induces an electric current have) become more bumpy. The flow of electrical current from the region reached 10 thousand kilometers thick and billions of kilometers wide.

This flow sheet is wrinkled into a better barrier against galactic cosmic rays, high energy particles are accelerated by the explosion of far to near light speed. The galactic cosmic rays is dangerous because it can damage spacecraft, even hurt the astronauts in orbit who do not receive the protection of the Earth's thick atmosphere.

Decreased levels of galactic cosmic rays slightest light on the impact of climate on the Earth. "The cosmic rays ionization in the Earth's atmosphere helped make cloud formation and lightning flashed," said Hoeksema. "So, when the intensity of cosmic rays is lower, which means the usual areas struck by lightning will be reduced, and lower intensity storms." However, Hoeksema added, tried to link the effects of cosmic rays with the weather is still very speculative.

During the reversal process, the polar sun's magnetic field weakened to near zero, then jumped back to the opposite polarity. Scientists will continue to observe how strong this recovery takes place during the next two years.

"This magnetic field would seem to be a good indicator of what will be done next solar cycle," says Dean Pesnell from NASA's Goddard Space Flight Center in Greenbelt. Scientist at NASA's Solar Dynamics Observatory spacecraft project stated that when the magnetic field is rapidly increasing its value, it means that the next solar cycle will be higher as well as.

The sun is fairly quiet during the 11 annual activity cycle today, which is known as Solar Cycle 24. "We have experienced some minimum solar activity, and each time the polar field is also becoming weaker. Each time the next cycle is also slightly weaker," says Pesnell. "So it will be interesting to see the polar field strength becoming stronger, and the next cycle is also higher."

Despite the routine every 11 years, until now scientists have not found the exact cause of the solar magnetic field reversal. They can indeed predict that within three or four months from now the phenomenon that will happen, but what the trigger factor remains mysterious.

"It was entered into the entire solar cycle, and we are still wondering about what it is," said Scherrer. "Until now we have not had a consistent mathematical description of what happened. Till you can model it, you will not be able to understand it.'s Really hard to understand.

During the reversal process, the Sun's magnetic field poles will weaken to zero, then bounced back with opposite polarity. The shift process was strongly associated with sunspot activity, known as the active region. "The magnetic field of the active region is creating a path toward the poles and eventually lead to a reversal," said Hoeksema.

But scientists can not understand the process. "Does it really depends on where the magnetic field coming from," said Hoeksema. "Will there be a lot of sun spots? Are sunspots that will contribute to the polar magnetic field, or whether they will cancel it locally? Was the question that we have not been able to answer it." *** [EKA | FROM VARIOUS SOURCES | SPACE | NASA | LIVESCIENCE | TJANDRA DEWI | KORAN TEMPO 4315]

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