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Operations CXO Status Report

Friday 8 January 2016 9.00am EST

During the last two weeks Chandra completed the observing schedule as planned.

Real-time procedures were executed on Dec 25 to dump OBC-B memory as a follow-up to the patch uplink performed on Dec 23. The dump will be used to update the baseline memory image maintained on the ground.

A real-time procedure was executed on Jan 6 to perform a routine self-check of the Electrical Interface Assembly (EIA) Sequencer.

Preparations are complete for the winter 2016 eclipse season; the season contains six eclipses and runs from Jan 8 to 22. Real-time procedures were executed on Jan 7 to prepare for the first eclipse: one to activate SCS 29 and one to dump and clear the EPS glitch counters.

A Chandra press release was issued on Jan 5 describing observations of the supermassive black hole at the center of the nearby galaxy NGC 5195. This is one of the nearest supermassive black holes to Earth with active powerful outbursts that has yet been discovered. Such outbursts are part of the "feedback" process that is important to the evolution of the black hole and its host galaxy. Two arcs in the X-ray data suggest separate eruptions from the black hole occurred millions of years ago. For details see: http://chandra.si.edu/press/16_releases/press_010516.html

A Chandra press release was issued on Jan 6 as a CU-Boulder press release describing observations of a recently discovered black hole, which does not have the expected number of stars surrounding it. The galaxy SDSS J1126+2944 is the result of a merger between two smaller galaxies, which brought together a pair of supermassive black holes. One of the black holes is surrounded by a typical amount of stars, but the other black hole is strangely “naked” and has a much lower number of associated stars than expected. For details see: http://chandra.si.edu/press/16_releases/press_010616.html

A Chandra press release was issued on Jan 7 describing observations of IDCS J1426.5+3508, an extremely distant massive cluster of galaxies. This is the most massive galaxy cluster detected at such an early epoch in the Universe. X-rays from Chandra confirmed the cluster's mass and showed that about 90% of that mass is in the form of dark matter. For details see: http://chandra.si.edu/press/16_releases/press_010716.html

The schedule of targets for the next two weeks is shown below



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Radiation Belts Jan 10 LocalLeoColdCloud ACIS-S SDSSJ095744.46+3308 ACIS-S Jan 11 Radiation Belts PSRB1259-63 ACIS-I Jan 12 202059188 ACIS-S LocalLeoColdCloud ACIS-S IRAS07145-2914 ACIS-S Jan 13 SDSSJ110017.99+1002 ACIS-S 3CR230 ACIS-S Radiation Belts Jan 14 ZwCl2341.1+0000 ACIS-I PMNJ2314+0201 ACIS-S Jan 15 NGC2892 ACIS-S 3CR222.0 ACIS-S PSRB0943+10 ACIS-S PSRB1259-63 ACIS-I Jan 16 2MASXJ10195855-0234 ACIS-S SDSSJ095744.46+3308 ACIS-S Radiation Belts Jan 17 3C220.1 ACIS-S SDSSJ114921.52+5320 ACIS-S Plaskett'sstar ACIS-S/HETG Jan 18 2MASXJ04293830-2109 ACIS-S Plaskett'sstar ACIS-S/HETG Radiation Belts Jan 19 30Doradus ACIS-I Jan 20 SDSSJ1010+1413 ACIS-S SDSSJ1220+0440 ACIS-S XLSSJ022812.1-04384 ACIS-S Jan 21 Plaskett'sstar ACIS-S/HETG XLSSUJ021700.3-0347 ACIS-S 30Doradus ACIS-I Radiation Belts Jan 22 30Doradus ACIS-I Plaskett'sstar ACIS-S/HETG RXCJ091651.8+523829 ACIS-I Jan 23 IRAS07145-2914 ACIS-S Radiation Belts Jan 24 3C220.1 ACIS-S

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All spacecraft subsystems continued to support nominal operations.

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