Posted on 01/26/2016 9:36:04 PM PST by SunkenCiv
Explanation: It is a candidate for the brightest and most powerful explosion ever seen -- what is it? The flaring spot of light was found by the All Sky Automated Survey for Supernovae (ASASSN) in June of last year and labelled ASASSN-15lh. Located about three billion light years distant, the source appears tremendously bright for anything so far away: roughly 200 times brighter than an average supernova, and temporarily 20 times brighter than all of the stars in our Milky Way Galaxy combined. Were light emitted by ASASSN-15lh at this rate in all directions at once, it would be the most powerful explosion yet recorded. No known stellar object was thought to create an explosion this powerful, although pushing the theoretical limits for the spin-down of highly-magnetized neutron star -- a magnetar -- gets close. Assuming the flare fades as expected later this year, astronomers are planning to use telescopes including Hubble to zoom in on the region to gain more clues. The above-featured artist's illustration depicts a hypothetical night sky of a planet located across the host galaxy from the outburst.
(Excerpt) Read more at 129.164.179.22 ...
[Illustration Credit: Jin Ma (Beijing Planetarium)]
So, how far from a “normal” supernova do you have to be to avoid burning up/burning out the local atmosphere of your own planet?
How many supernova’s are required to create each of the common elements? A “regular” and a regular nova burns (combines) H-H->He, He_> Li and higher as it implodes later in life, and a little bit higher weight .. But those cannot leave the star. They are trapped inside the star’s gravity field.
So, only a supernova cab low elements (isotopes) outside to another star. Can a supernova create several tiers of element-isotope building in its own collapse?
Or are we limited by stellar fusion to “one-nuclei+one-nuclei fusion mass gain per supernova?
The heavier elements were (in the various closely related commonly discussed model of formation) built in the activity of early stars, pretty much all of which have ceased to exist.
Theory says if there's a supernova in your stellar neighborhood, you might as well kiss your behind goodbye. All of the planets in the star's orbitary family will be cinders. Any nearby stars will be washed with deadly radiation for several tens of light years, perhaps even up to a couple of hundred light years. Lesser radiation will have deleterious mutational effects even farther away, say several thousand light years.
BIG BOOM!....................
Will they need an ORBITUARY?.........................
Every time scientists, and especially astrophysicists, think they have all the answers, God throws them a curve ball..............................
Perhaps we are witnessing the ULTRA-NOVA that would be the final act of a galaxy’s central black hole collapsing after it had consumed all of the matter from its galactic gravity well................................
Ouch.
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