Professor David Buote
We welcome Professor David Buote as our guest blogger. Buote was one of the first Chandra Postdoctoral Fellows and is now a Professor at the University of California at Irvine. He has studied X-rays from massive elliptical galaxies and galaxy clusters since the time he was a graduate student. His new work with Aaron Barth on the dark matter in a relic elliptical galaxy is the subject of our latest press release.
This year marks the 20th anniversary of the Chandra X-ray Observatory and a chance to celebrate its many and diverse accomplishments. A critical aspect of Chandra's impact on astrophysics is its synergies with observations of phenomena throughout the electromagnetic (EM) spectrum and through other channels like gravity waves and neutrinos. Our study highlights how studies of the X-ray emission of a rare type of galaxy complement and augment what has been learned from observations of the stellar light at longer wavelengths.
Galaxies are broadly divided into two types — disks and spheroids — with substantial overlap in their properties. The spheroids — or elliptical galaxies — are approximately round but range in shape as observed on the sky from nearly circular to elongated somewhat like an American football viewed from the side. Most of what we know about the stars in galaxies comes from observations of visible light photons with lots of help from observations in the nearby ultraviolet and infrared (IR) parts of the EM spectrum.