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Operations CXO Status Report

Friday 10 August 2018 9.00am EDT

During the last week observing schedule was replanned to incorporate an observation of VW Hyi, which was accepted as a Director's Discretionary Time Target of Opportunity on Aug 5. A scheduled observation of NGC7212 was impacted by the replan and will be rescheduled in a future week.

A Chandra press release was issued on Aug 9 describing two new separate studies using the Chandra COSMOS-Legacy survey data and other Chandra data. These studies have independently collected samples of intermediate mass black holes (IMBHs). IMBHs may be able to explain how the very biggest black holes, the supermassive ones, were able to form so quickly after the Big Bang. One leading explanation is that supermassive black holes grow over time from smaller black holes "seeds" containing about a hundred times the Sun's mass. Some of these seeds should merge to form IMBHs. For details see: http://chandra.si.edu/press/18_releases/press_080918.html

Of note this week was the Chandra science workshop on "Accretion in Stellar Systems" held in Cambridge MA, Aug 8-10.

The schedule of targets for the next week is shown below and includes an observation of HD 93129A, which was accepted as a Target of Opportunity on May 24 and is coordinated with NuStar, and an observation of SN2018bsz a follow-up to a Target of Opportunity accepted on May 31.



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Radiation Belts HD93129A ACIS-S LSBCF576-01 ACIS-S SS433 ACIS-S/HETG NGC5112 ACIS-S Aug 14 SN2018bsz ACIS-S Radiation Belts Aug 15 NGC253 ACIS-I Mrk0462 ACIS-S Aug 17 Radiation Belts Aug 18 PSZ2G080.16+57.65 ACIS-I RXJ2143.0+0654 HRC-S /LETG Abell2219 ACIS-I RXJ2143.0+0654 HRC-S /LETG Aug 19 PSRJ2032+4127 ACIS-S SDSSJ1420+3955 ACIS-I

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All spacecraft subsystems continued to support nominal operations.

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