Astronomers confirmed: Type II supernova explosion was asymmetric

Recently, astronomers using nuclear spectroscopy supernova SN1987A NuSTAR Telescope Array newest collection of data demonstrate the asymmetry of a Type II supernova of essential characteristics.


Type II supernova core: neutrino absorption and heating gas turbulence, and eventually developed into an asymmetric explosion.

Supernova SN1987A about 166,000 light-years from Earth, it broke the light to reach the Earth in 1987.Nuclear Spectroscopy Telescope Array recently when NuSTAR observe this supernova , the probe to a unique energy signal. It found that titanium -44, which is the early stage of type II supernova produced radioisotopes.

The study, published in the journal “Science”, one of the paper’s authors, Dr. Fiona • Harrison from the California Institute of Technology, said, “One of the titanium -44 is the most central place in the supernova explosion generated, It shows the shape of the dismembered tracing the driving force behind stellar material titanium -44 very unstable, in the process of decay of calcium emitted gamma rays, just be NuSTAR detected. ”

Scientists draw strong in 2014 another supernova remnant Cassiopeia A titanium -44 maps, also found evidence of asymmetric supernova explosion, but no supernova SN1987A asymmetric degree.Comprehensive results of these studies can be concluded that the asymmetry of the type II supernovae essential characteristics.

NuSTAR latest data collected showed that supernova SN1987A titanium is -44 to 260 million km per hour speed away from us. This means that the supernova ejections of matter towards a certain direction, and its dense core (ie, neutron stars), but toward the other direction. Another research scientists Steve • Boggs pointed out that “the residual core of the star to form a dense object, which is the driving force of a supernova explosion source. Dense core and cast out of the material together and separately towards of different directions. ”

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