Long-Standing Mystery of Stars Solved
Follow the Daily Galaxy
Add Daily Galaxy to igoogle page AddThis Feed Button Join The Daily Galaxy Group on Facebook Follow The Daily Galaxy Group on twitter
 

« EcoAlert: Only 1/3 of Near-Earth Asteroids Detected | Main | Milky Way's Alien Solar Systems "More Likely to Support Life" (Today's Most Popular) »

February 04, 2013

Long-Standing Mystery of Stars Solved

 

           Magneticloopstructuresinthecoronaofthesun- (1)

 

Scientists at Northumbria University have begun to unlock the mystery of why the outer edge of the Sun is much hotter than its surface for the first time. A team led by Northumbria's Dr Richard Morton, and including researchers from the University of Sheffield and Queen's University Belfast, have used cutting-edge solar-imaging technology to observe the Sun's chromosphere – a region of the Sun's atmosphere sandwiched between its surface (photosphere) and outer layer (corona) – to an unprecedented level of detail.

For years astronomers have looked for the elusive mechanism that causes some stars to have a corona that is almost 200 times hotter than their photosphere, despite being further away from the heat source at the star's core. It is believed that the cause of the increased temperature is due to magnetohydrodynamic (MHD) waves that distribute the energy generated below the star's surface to the outer layers of the Sun's atmosphere

Now, for the first time, the team has examined the MHD waves using a UK-designed dedicated solar-imaging telescope known as Rapid Oscillations in the Solar Atmosphere, or ROSA, to observe the chromosphere with a high degree of clarity. The powerful tool enabled some of the highest resolution images of the chromosphere to be obtained, allowing the scientists to study the speed and power of the waves and then estimate the amount of energy that they transport.

Their calculations confirm that the MHD waves could be responsible for transporting energy from below the solar surface, out through the chromosphere, into the corona and leading to heating of the outer layers in excess of a million degrees.

"The Sun is our closest star and provides a unique opportunity to study the properties of stars in detail," said Morton. "ars generate heat through thermonuclear reactions in their core and the temperature decreases towards the star's surface. However, a significant number of stars have higher temperatures at the outer edges of their atmospheres than they do on their surface.

"Our observations have permitted us to estimate the amount of energy transported by the magnetic waves, and these estimates reveal that the waves' energy meets the energy requirement for the unexplained temperature increase in the corona."

The team's findings have been published in Nature Communications, an online journal. Journal reference: Nature Communications Provided by Northumbria University.

Image at the top of the page shows magnetic loop structures in the corona of the Sun. The loops highlight the Sun’s magnetic field and are visible because they support the dense, million degree gas typical of the corona. The image is courtesy of the Science Team for NASA’s Solar Dynamic Observatory.

The Daily Galaxy via Northumbia University

Comments

Once again the problem is not solved.

Quote: "It is believed that the cause of the increased temperature is due to magnetohydrodynamic (MHD) waves that distribute the energy generated below the star's surface to the outer layers of the Sun's atmosphere".

AD: The Solar magnetism is believed to be produced from within the Sun, which obviously is false. How do scientists logically explain the changing solar magnetic field for every 10.8 years with an "internal magnetic dynamo"? They obviously cannot.

A more logical explanation is that the Sun receive electric and magnetic charges from the galactic field and thus the solar energy is flowing into the Sun, constantly feeding the Sun, that then newer will "die and explode" as the scientists hypothesize, at least not in this way and not with the assumed time horizon.

Read of the more logical explanations here – “Solar Plasma Circuits” - http://www.thunderbolts.info/tpod/2010/arch10/100921circuits.htm

Ivar Nielsen
Natural Philosopher

If you consider that the inexplicably huge stars in the LMC are the product of a 'second birth', one where existing stars under go a rebirth of additional gas input to become so large, then why would it not be possible to see stars like our Sol as magnetars with an outer gas layer of normal magnetism? This 11 year cycle of reversal seems to me to be an 'unwinding' of the compressed energy.


Post a comment

« EcoAlert: Only 1/3 of Near-Earth Asteroids Detected | Main | Milky Way's Alien Solar Systems "More Likely to Support Life" (Today's Most Popular) »




1


2


3


4


5


6


7


8





9


11


12


13


14


15

Our Partners

technology partners

A


19


B

About Us/Privacy Policy

For more information on The Daily Galaxy and to contact us please visit this page.



E