Chandra Digest (Nov 15) Special Leonids Update!
Chandra Prepares for the Leonid Meteor Shower
While skywatchers eagerly anticipate this weekend’s Leonid meteor
shower, members of the Chandra X-ray Center team will be busy in their
own right. However, instead of gazing into the night sky for “shooting
stars,” they will be monitoring and maneuvering Chandra to protect
NASA’s premier X-ray facility from harm’s way.
http://chandra.harvard.edu/chronicle/0401/leonids.html
Operations CXO Status Report (Friday 11/09/01)
Last week the observing schedule was interrupted following a high
radiation event at 1:37pm EST on Nov 4 that stopped the daily load and
activated the science instrument safing sequence (SCS 107). All actions
were nominal and assessment of the dump data confirmed that the trigger
was due to high proton counts in the EPHIN E1300 channel exceeding the
pre-defined threshold of 10 counts/cm2/s/sr. Radiation levels allowed
the loads to be restarted at 3pm on Nov 8.
The loads were interrupted a second time at 10am on Nov 9 to accommodate
a high priority Target Of Opportunity received late on Nov 8. The
target, XRF010930, is a candidate for the first X-ray observation of a
fast X-ray transient.
http://chandra.harvard.edu/press/updates/update_110901.html
NEW & NOTEWORTHY!
**Have You Seen KS 1731-260?
Chandra’s observation in March of 2001 of the neutron star KS 1731-260
showed that it is a remarkably ‘cool’ 3 million degrees Celsius.
http://chandra.harvard.edu/photo/cycle1/ks1731/index.html
**Question of the Week
Is it accurate that satellites fall into two basic orbital groups, one
of these being very close to the earth, and the other being somewhat
farther away?
http://chandra.harvard.edu/resources/faq/astrophysics/astrophysics-22.html
**Name the Author
Who said: “When you have eliminated the impossible, whatever remains,
however improbable, must be the truth.” Vote for your choice at
http://chandra.harvard.edu/vote/quizlet.html
**All recent New & Noteworthy features are available at
http://chandra.harvard.edu/new.html
