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There is now a CONTENT FREEZE for Mercury while we switch to a new platform. It began on Friday, March 10 at 6pm and will end on Wednesday, March 15 at noon. No new content can be created during this time, but all material in the system as of the beginning of the freeze will be migrated to the new platform, including users and groups. Functionally the new site is identical to the old one. webteam@gatech.edu
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Atlanta, GA | Posted: August 22, 2014
Jason Maderer
Media Relations
maderer@gatech.edu
404-385-2966
Summary Sentence:
NASA has released new findings about a black hole telescope.
Full Summary:
No summary paragraph submitted.
NuSTAR new findingsAssociate Professor David Ballantyne is on the science team for NuSTAR, a telescope that NASA launched in June 2012. Ballantyne helped plan the mission, which looks at black holes in ways never seen before. NASA has now released some of the instrument's newest findings. NuSTAR has watched a black hole's gravity pull X-ray light, stretching and blurring that light. Black hole experts like Ballantyne have observed this phenomenon before, but never in so much detail.
"For more than three decades, we have known that growing supermassive black holes at the centers of galaxies produce X-rays. Yet, how these X-rays are actually produced is still a mystery, said Ballantyne. "It seems the X-rays are generated in a 'corona' (analogous to the solar corona that can be seen during a solar eclipse), but figuring out even the basic details of these black hole coronae, such as its size, has been a major challenge. Now, NuSTAR, NASA's newest X-ray telescope, with its high sensitivity to a wide range of X-ray energies, is finally able to measure the details of black hole coronae. These measurements will allow astrophysicists to understand the engines that power some of the most energetic regions in the entire Universe."
Photo caption: The regions around supermassive black holes shine brightly in X-rays. Some of this radiation comes from a surrounding disk, and most comes from the corona, pictured here in this artist's concept as the white light at the base of a jet. This is one of a few possible shapes predicted for coronas. Image credit: NASA/JPL-Caltech
