Credit & Copyright: Jin Ma (Beijing Planetarium)
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.
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Публикации с ключевыми словами:
supernova - explosion - Сверхновые
Публикации со словами: supernova - explosion - Сверхновые | |
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