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Operations CXO Status Report

Friday 15 January 2021 9.00am EDT

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

Real-time procedures were executed during each ground contact to reset the DSN Outage Dead Man Load.

A Chandra image release was issued on Jan 8 describing Chandra observations of J1818.0-1607, the fastest spinning and possibly the youngest magnetar currently known. Magnetars are a type of neutron star (a dense remnant originating from the collapsed core of a massive star during a supernova) characterized by the most powerful known magnetic fields in the Universe. Magnetars are rare -- only about 1% of identified neutron stars are magnetars. The Chandra data revealed a point source where the magnetar was located, which is surrounded by diffuse X-ray emission, likely caused by X-rays reflecting off dust located in its vicinity. For details, see:

Chandra press and image releases were issued on Jan 14 featuring a new study using NASA's Chandra X-ray Observatory and several other telescopes that reveals what happens to the black holes in galaxy cores following galaxy collisions. This work expands earlier work on two-galaxy mergers to triple mergers. Of seven triple galaxy mergers studied, there is one with a single growing supermassive black hole, four with double growing supermassive black holes, and one that is a triple. The final triple merger studied shows no X-ray emission detected from the supermassive black holes. Studies of triple mergers can help us understand whether pairs of supermassive black holes can approach so close to each other that they make ripples in spacetime called gravitational waves; the energy lost to these waves will cause the black holes to merge. For details, see:

The schedule of targets for the next week is shown below and includes an observation of ESO253-G003, which is a follow-up to a Director's Discretionary Time Target of Opportunity accepted on Nov 18, 2020, an observation of V404Cygni coordinated with VLA, an observation of GW170817 coordinated with VLA, and an observation of IGRJ16318-4848 coordinated with NuSTAR.

        Radiation Belts                     Jan 17
        IGRJ16318-4848         ACIS-S/HETG
        RXJ0911.4+0551         ACIS-S
        GW170817               ACIS-S       Jan 18
        HD82443                ACIS-S
        DEMS5                  ACIS-S
        Abell644               ACIS-I       Jan 19
        Radiation Belts                     Jan 20
        RCW86NW                ACIS-I
        SDSSJ082649.30+1639    ACIS-S
        RCW86NW                ACIS-I
        SDSSJ082649.30+1639    ACIS-S
        RCW86NW                ACIS-I       Jan 21
        PGC024068              ACIS-S
        ESO253-G003            ACIS-S
        UGC04467               ACIS-S
        J100758.26+211529.2    ACIS-S       Jan 22
        Radiation Belts
        J100758.26+211529.2    ACIS-S
        JWST-DTDF-1            ACIS-I       Jan 23
        J092055                ACIS-S
        V404Cygni              ACIS-S
        SDSSJ085451.11+1730    ACIS-S
        H1821+643              HRC-S /LETG  Jan 24
        NGC4485/90             ACIS-S
        Radiation Belts


All spacecraft subsystems continued to support nominal operations.

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