Credit & Copyright: Kevin Hurley
(Space Sciences Laboratory)
Explanation:
On August 27th
an intense flash of X-rays
and gamma-rays swept through our Solar System.
Five spacecraft of the
Third InterPlanetary gamma-ray burst Network,
Ulysses,
WIND,
RXTE,
NEAR, and
BeppoSAX,
recorded the high energy signal --
a signal so strong that it saturated detectors on WIND and RXTE and
triggered the safety mode
automatic shut-off of the NEAR gamma-ray instrument!
As plotted here, the count rate for the Ulysses detector abruptly
spiked to a high level and then slowly tailed off showing
smaller peaks roughly every 5 seconds.
The signal and location provided by these spacecraft observations leads
researchers to identify the source as a dramatic flare-up from
one of only
four previously known "Soft Gamma Repeaters" .
These exotic
sources of gamma-rays are believed to be
highly magnetized spinning neutron stars
called Magnetars.
Imaginatively cataloged as
SGR 1900+14, this magnetar
is estimated to have been
born in a supernova explosion
about 1,500 years ago and to have a magnetic field
500,000,000,000,000 times stronger
than Earth's.
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Публикации с ключевыми словами:
magnetar - soft gamma repeater - neutron star - нейтронные звезды - магнитное поле - рентгеновское излучение - гамма-излучение
Публикации со словами: magnetar - soft gamma repeater - neutron star - нейтронные звезды - магнитное поле - рентгеновское излучение - гамма-излучение | |
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