The Cassiopeia A supernova’s inner nebula isn’t traveling outward evenly. Astronomers from the University of Amsterdam and Harvard have found this new phenomenon. There is a strong possibility that the remains have been impacted by another object. The Astrophysical Journal has approved their findings for publication.
Cassiopeia A is the relic of an exploding star in the Cassiopeia constellation, which is about 11,000 light-years distant from our solar system. The first rays of light from the outburst were expected to reach Earth about 1670. The explosion could not be seen with the unaided eye or the primitive telescopes of the time due to the dense cloud of gas as well as dust surrounding the star. The Cassiopeia A explosion nebula is growing at an average velocity of 4,000 to 6,000 kilometers per second and also has a temperature of roughly 30 million degrees Celsius. Expansion is more likely to be taking place in pre-explosion gas, which was blasted out by the star. At this point, the distance between Cassiopeia A and Earth is around 16 light-years.
The Chandra X-ray Observatory’s 19 years of data were examined by the team led by Jacco Vink (University of Amsterdam, Netherlands). In a very elliptical path around the planet, this American X-ray satellite has Dutch spectrometers aboard. The inner sections of the explosion nebula on Cassiopeia A’s western side are drifting inward rather than expanding, according to the researchers. The researchers also measured the speed of the outer shock wave’s acceleration or deceleration. Instead of slowing down, this outermost shock wave accelerated to the west instead.
Vink partners with an Italian group that also recently looked into the possibility of a collision between the two vehicles. Gas particles may have interacted with a shock wave, causing it to dissipate An erratic wind of gas particles would have generated this shell near the conclusion of the star’s existence.
