Hundreds of Black Holes Discovered
Read the news release: https://chandra.harvard.edu/press/23_releases/press_011123.html
Produced by the Space Telescope Science Institute’s Office of Public Outreach in collaboration with NASA’s Universe of Learning partners: Caltech/IPAC, Center for Astrophysics | Harvard & Smithsonian, and NASA Jet Propulsion Laboratory.
· SDSS optical image including galaxy J011522.18: Legacy Surveys/D. Lang (Perimeter Institute))
· Side-by-side X-ray and optical image of J011522.18: X-ray: NASA/CXC/SAO/D. Kim et al.; Optical/IR: Legacy Surveys/D. Lang (Perimeter Institute)
· Side-by-side X-ray and optical image of J155627.74: X-ray: NASA/CXC/SAO/D. Kim et al.; Optical/IR: Legacy Surveys/D. Lang (Perimeter Institute)
Writer: Leah Ramsay
Designer: Leah Hustak, Joseph Olmsted
Science review: Dr. Frank Summers
Education review: Jim Manning
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Animation of the universe. Nebulas glow and star systems surround the top of Jupiter. Text, News From the Universe.
January 30, 2023. Hundreds of black holes discovered.
Photo of space with hundreds of bright spots.
Text, A survey has revealed about 400 previously unidentified supermassive black holes using data from NASA's Chandra X-ray Observatory.
Researchers compared the Chandra X-ray data with visible-light images from the Sloan Digitized Sky Survey.
Image, SDSS J 0 1 1 5 2 2 dot 18+00151 8.5. A purple circle is around a small bright spot.
Text, Researchers focused on a class of objects known as "XBONGs" (X-ray bright, optically normal galaxies).
Thick gas and dust around these black holes blocks most optical light, but X-rays are able to pass through to be detected by Chandra.
Image, SDSS J155627 dot 74+241758.9. A purple circle is around a small bright spot next to a yellow circle around a second small bright spot.
Text, The survey results are helping astronomers conduct a more accurate census of the black holes that exist in the centers of most large galaxies.
This news was brought to you in part by the Chandra X-Ray Center in Cambridge, MA.