Cassiopeia a. This may be one of the most famous supernova eruptions in our universe. And astronomers today say that this nebula did not last uniformly. Perhaps, the conflict can be blamed.
Cassiopeia A is 11,000 light-years from Earth. She is the only remnant Of one The red light came to us in the 1670s. At least Cassiopeia A has not been found and researchers have identified it from their analyzes. Naked. And this The astronomical instruments of the time were not sufficient to observe it. What we know in any matter is at heart This supergiant star was formed by a supernova explosion and has a temperature of about 30 million C. .
From (Netherlands) In fact in its western part Cassiopeia a. Or the right side of the pictures, if you like. The inner parts of the nebula appear to move inward, instead of expanding. Furthermore, astronomers’ measurements of the acceleration – or reduction – of an external shock wave show that in the west, it accelerates rather than decreases.
Conflict with the object ejected by the star?
Recent work (Italy) The remnants of the star indicate collision with the denser part. And dust. Or even, a kind of shell – part of this case – particles. It may have already been formed by the star at the end of its lifespan, but it was blown away before its supernova erupted. Gas particle constant.
Researchers regret that there is no information about the birth star of Cassiopeia A. Its size or its spectral type, for example, may clarify the question. But they can still learn very quickly. Thanks Who can see At Cassiopée A by the end of this year.