An overview of the Chandra mission and goals, Chandra's namesake, top 10 facts.
Classroom activities, printable materials, interactive games & more.
Overview of X-ray Astronomy and X-ray sources: black holes to galaxy clusters.
All Chandra images released to the public listed by date & by category
Current Chandra press releases, status reports, interviews & biographies.
A collection of multimedia, illustrations & animations, a glossary, FAQ & more.
A collection of illustrations, animations and video.
Chandra discoveries in an audio/video format.
Q& A: Black Holes
click to enlarge
Schematic diagram of the 14 dynamically confirmed
black hole binaries with low mass companions (i.e.
stars with masses less than about 3 solar masses). The
color scale represents the temperature of the star.
Credit: Jerome A. Orosz, Utrecht University (The
Netherlands).
Can you tell me what is the distance between the
XTEJ1118+480
black hole and its companion star?
The distance from the black hole
XTE J1118+480 has
been estimated to be 1.9 million kilometers. See the
accompanying sketch. Reference: J. McClintock et al. 2001
Astrophys. J. 551, L147
