NASA's SDO
(Solar Dynamics Observatory) has just released this stunning, painterly image
of the Sun. The Solar Dynamics observatory was designed to assist us to know
about the Sun's influence on Earth and near-Earth space by studying the solar
atmosphere. In this lovely image, NASA's sun-gazing spacecraft spotted an
unusual series of eruptions, forced by fast "puffs" from the Sun's
outermost atmosphere (the corona), to interplanetary space. It starts on
January 17, 2013, the puffs took place about once every 3 hours, and then after
twelve hours, larger eruptions occurred.
Nathalia
Alzate a solar scientist at the University of Aberystwyth in Wales said; if you
look at the corona in intense ultraviolet light we can review the source of the
puffs is a series of energetic jets and related flares. The jets are localized,
disastrous releases of energy that spew material out from the sun into space.
These swift changes in the magnetic field cause flares, which release an
enormous amount of energy in a very limited time in the form of super-heated
plasma, high-energy radiation and radio bursts. The large, slow structure is
unwilling to erupt, and does not originate to smoothly propagate outwards until
numerous jets have occurred.
We still need some time to evaluate whether
these’re shock waves, formed by the jets, passing through and driving the slow
eruption, or whether magnetic reconfiguration is driving the jets letting the
bigger, slow structure to slowly erupt. Many thanks to latest advances in
observation and in photo processing techniques we can throw light on the way
jets can lead to small and fast, or big and slow, eruptions from the Sun. She
continues; this spectacular photograph is a combination of three wavelengths of
light. It shows one of the multiple jets that led to a series of slow coronal
puffs. The striking photo has been colorized in red, green and blue.
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