Chandra Digest 29 Mar 2002: Distant Quasars
SDSS 0836+0054, 1030+0524, & 1306+0356:
Chandra Finds Well-Established Black Holes In Distant Quasars
– Pushing further back toward the first generation of objects to form in
the Universe, NASA’s Chandra X-ray Observatory has observed the three
most distant known quasars and found them to be prodigious producers of
X-rays. This indicates that the supermassive black holes powering them
were already in place when the Universe was only about one billion years
old.
http://chandra.harvard.edu/photo/2002/highzqso/index.html
Operations CXO Status Report (Friday 03/22/02)
Last week the observing schedule was interrupted due to high radiation
associated with solar flare activity. The loads were halted on March 18
at 9:51am EST through a ground command to execute the SI Safing SCS 107.
This ensured that the accumulated radiation dose for ACIS remained below
the allowed threshold. Loads were rebuilt for uplink on March 20, when
the radiation environment reached an acceptable level.
