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Operations CXO Status Report

Friday 6 April 2018 9.00am EDT

During the last week Chandra completed the observing schedule as planned.

A real-time procedure was executed on Feb 7 to perform a routine self-check of the Electrical Interface Assembly (EIA) Sequencer.

A Chandra press release was issued on Apr 2 describing observations of the cold front located in the Perseus galaxy cluster that extends for about two million light years. The cold front consists of a relatively dense band of gas with a "cool" temperature of about 30 million degrees moving through lower density hot gas with a temperature of about 80 million degrees. Over time, the front has remained extremely sharp rather than becoming diffuse. For details see: http://chandra.si.edu/press/18_releases/press_040318.html

A Chandra press release was issued on Apr 3 announcing the selection of the 2018 Einstein Fellows, who will conduct research related to physics of how the universe works. For details see: http://chandra.si.edu/press/18_releases/press_040318fellowships.html

A Chandra press release was issued on Apr 4 describing archival analysis demonstrating the existence of a dozen black hole-low mass binaries in their inactive state gathered around Sgr A*. The authors extrapolated from their analysis that there must be anywhere from 300 to 500 black hole-low mass binaries and about 10,000 isolated black holes in the area surrounding Sgr A*. For details see: http://chandra.si.edu/press/18_releases/press_040418.html

Also of note this week was the Chandra Quarterly Review conducted on Apr 4 in Cambridge.

The schedule of targets for the next week is shown below and includes an observation of 3FGL J1544-1125 coordinated with the VLA.



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NGC4302 ACIS-S Apr 9 NGC4298 ACIS-S NGC3738 ACIS-S ArLac HRC-I XXL-S0225 ACIS-S Radiation Belts Apr 10 XXL-S0225 ACIS-S 1RXSJ125029.7-37022 ACIS-I Apr 11 NGC4548 ACIS-S IC3392 ACIS-S JWST-DTDF-6 ACIS-I A1795 ACIS-I JWST-DTDF-6 ACIS-I Apr 12 A1795 ACIS-I J1138+4732 ACIS-S A1795 ACIS-S Radiation Belts Apr 13 A1795 ACIS-I JWST-DTDF-6 ACIS-I NGC4313 ACIS-S NGC4639 ACIS-S Apr 14 NGC4041 ACIS-S LSBCF574-09 ACIS-S NGC4390 ACIS-S NGC3838 ACIS-S Kapteyn'sStar ACIS-S SDSSJ115606.14-0219 ACIS-S Apr 15 A1795 ACIS-I Radiation Belts Apr 16 NGC4330 ACIS-S 3FGLJ1544-1125 ACIS-S

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All spacecraft subsystems continued to support nominal operations.

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