My Astrophysics PublicationsQuantification of Optical Substructure
Effects of Substructure on galaxy cluster mass determinations
If I'd stuck with astrophysics as a career, I would probably have been working on -- or been funded by -- the Chandra X-Ray Observatory. Observations of Abell cluster A2142 reveal dramatic contrasts in the cluster's X-ray emission, indicative of smaller groups of galaxies, merging together to form the richer, denser cluster itself. My thesis work concluded that most clusters are young objects, objects in which evidence of the building blocks (the groups of galaxies) are still evident. This work from A2142 allows astronomers to observe the individual groups directly, without lots of perverse statistical contortions. Way to go, NASA.
Here's the paper the team working on A2142 published.
Photographs and text copyright Tina Bird, 2003-2005
Last modified 7 April 2005