|Expected & Detected
As anticipated, high-resolution X-ray images have provided new insight into the
supernova process, the effect supernova shock waves have on the surrounding
interstellar gas, the acceleration of particles by rotating neutron stars, and enabled
the discovery of many stellar-mass black holes.
The discovery of long plumes of silicon-rich gas in the Cassiopeia A supernova
remnant (SNR), and iron-rich gas on the remnant's outer edge suggest that a
non-spherical explosion turned much of the original star "inside-out."
A neutron star discovered in the center of the Cassiopeia A SNR was observed to
undergo a rapid drop in temperature, likely caused by the formation of a bizarre
neutron superfluid state of matter deep inside the neutron star.
A pattern of X-ray "stripes" was found in the remains of an exploded star and may
provide the first direct evidence that a cosmic event can accelerate particles to
energies a hundred times higher than achieved by the most powerful particle
accelerator on Earth.
The discovery of an X-ray emitting cloud 150 light years across that has been
created by a rapidly spinning neutron star which is spewing magnetic fields and
particles into surrounding space.