1st image from NASA’s new IXPE X-ray telescope looks like a ball of purple lightning
IXPE’s first science image shows the supernova remnant Cassiopeia A. (Image credit: NASA/CXC/SAO/IXPE)
NASA’s newly-launched X-ray hunting probe has snapped its first science image and — wow — it’s spectacular.
The Imaging X-ray Polarimetry Explorer (IXPE) probe launched Dec. 9, 2021, on a mission to observe objects like black holes and neutron stars in X-ray light, shedding much-anticipated light on the inner workings of the cosmos. The probe spent its first month in space checking out its various systems to get ready to capture its first images, and now the IXPE team has released its very first science image.
The image shows Cassiopeia A, the remnants of a star that exploded as a supernova in the 17th century. That explosion sent shock waves outwards, heating up surrounding gasses and accelerating cosmic ray particles (high-speed electrons and atomic nuclei) to create a cloud of assorted matter, according to a statement from NASA. This cloud, as you can see in the striking image from IXPE, glows brilliantly in X-ray light.
It goes without saying that the image is visually stunning.
“The IXPE image of Cassiopeia A is bellissima, and we look forward to analyzing the polarimetry data to learn even more about this supernova remnant,” Paolo Soffitta, the Italian principal investigator for IXPE at the National Institute of Astrophysics (INAF) in Rome, said in the NASA statement. (“Bellissima” means beautiful in Italian.)
Now, while the image’s most striking feature is its almost-neon magenta color, it doesn’t actually look like that in visible light. But this color, which represents X-ray radiation, is a helpful guide for scientists. The more saturated the color, the more intense the X-ray light. Additionally, veins of what resembles blue lightning in the image represent high energy X-rays seen by NASA’s Chandra X-ray Observatory.
While the two telescopes both observe X-rays, they have different kinds of detectors so, by working together, they can produce more complete and detailed data, according to the statement.
Chandra’s first image was also of Cassiopeia A after it launched all the way back in 1999. Chandra’s early observations revealed that, at the center of the remnant, there must be a compact object like a black hole or neutron star.
The Chandra Obsevatory’s first image, the supernova remnant Cassiopeia A, captured in 1999. (Image credit: Credit: NASA/CXC/SAO)
“The IXPE image of Cassiopeia A is as historic as the Chandra image of the same supernova remnant,” IXPE principal investigator Martin C. Weisskopf said in the NASA statement. “It demonstrates IXPE’s potential to gain new, never-before-seen information about Cassiopeia A, which is under analysis right now.”