NASA | MSFC | SAO | Chandra X-ray Observatory | 2019 Oct 18
Astronomers now know that Tycho's new star was not new at all. Rather it signaled the death of a star in a supernova, an explosion so bright that it can outshine the light from an entire galaxy. This particular supernova was a Type Ia, which occurs when a white dwarf star pulls material from, or merges with, a nearby companion star until a violent explosion is triggered. The white dwarf star is obliterated, sending its debris hurtling into space. ...
Chandra reveals an intriguing pattern of bright clumps and fainter areas in Tycho. What caused this thicket of knots in the aftermath of this explosion? Did the explosion itself cause this clumpiness, or was it something that happened afterward?
This latest image of Tycho from Chandra is providing clues. To emphasize the clumps in the image and the three-dimensional nature of Tycho, scientists selected two narrow ranges of X-ray energies to isolate material (silicon, colored red) moving away from Earth, and moving towards us (also silicon, colored blue). The other colors in the image (yellow, green, blue-green, orange and purple) show a broad range of different energies and elements, and a mixture of directions of motion. In this new composite image, Chandra's X-ray data have been combined with an optical image of the stars in the same field of view from the Digitized Sky Survey. ...
Genus Statistic Applied to the X-Ray Remnant of SN 1572:
Clues to the Clumpy Ejecta Structure of Type Ia Supernovae ~ Toshiki Sato et al
- Astrophysical Journal 879(2):64 (2019 Jul 10) DOI: 10.3847/1538-4357/ab24db
- arXiv.org > astro-ph > arXiv:1903.00764 > 02 Mar 2019
Imprint of a Thermonuclear Explosion ~ Gilles Ferrand et al