Michelle Zajac
Jan 09, 2024
Prepare to be amazed as astronomers make a groundbreaking discovery by combining data from NASA’s Chandra X-ray Observatory and James Webb Space Telescope to study the well-known supernova remnant Cassiopeia A (Cas A). This work has led to the revelation of an unusual structure in the debris from the destroyed star known as the “Green Monster,” aptly named for its resemblance to the striking wall in the left field of Fenway Park.
By merging the Webb data with X-rays from Chandra, researchers have uncovered that the Green Monster was formed by a blast wave from the exploded star colliding with the surrounding material. A detailed analysis indicated that filaments in the outer part of Cas A, originating from the blast wave, closely matched the X-ray properties of the Green Monster, including significantly less iron and silicon compared to the supernova debris. This interpretation is evident from the color Chandra image, showing that the colors inside the Green Monster’s outline best match with the colors of the blast wave rather than the debris with iron and silicon.
Curious to learn more about the Green Monster? Check out the full article here and Read More