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Operations CXO Status Report

Friday 21 April 2023 9.00am EDT

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

Chandra passed through the 20th and 21st eclipses of the season on Apr 17 and Apr 19 respectively, with nominal power and thermal performance. Real-time procedures were executed on Apr 17 to dump and clear the EPS glitch counters following the Apr 17 eclipse.

Chandra press and image releases were issued on Apr 20 describing an analysis of the impact of supernovae on nearby planets. The new analysis finds that in addition to prompt radiation and high energy particles created directly in the supernova, there is a third effect on nearby bodies; X-rays generated in the interaction between the supernova's blast wave and ISM gas. These X-rays may impact a nearby planet from months to years after the explosion and may last for decades. Such an event would severely alter a planet's atmospheric chemistry. For details see:

The schedule of targets for the next week is shown below and includes observations of SN2021ahpl, which are follow-ups to a Target of Opportunity accepted on Dec 1, an observation of GRB211211A, which was accepted as a Target of Opportunity on Mar 17, and an observation of XTE J1701-462, which was accepted as a Target of Opportunity on Mar 28.

        SN2021ahpl             ACIS-S       Apr 24
        MR2251-178             HRC-S /LETG
        SN2021ahpl             ACIS-S
        Radiation Belts                     Apr 25
        SN2021ahpl             ACIS-S
        SDSSJ113642.72+2643    ACIS-S
        GRB211211A             ACIS-S
        70OPH                  HRC-I
        SDSSJ212839.47-06304   ACIS-S       Apr 26
        ACOS780                ACIS-S
        AM2126-601             ACIS-S
        XTEJ1701-462           ACIS-S
        AM2126-601             ACIS-S
        A1795                  ACIS-I
        DELSJ091054.53-0414    ACIS-I       Apr 27
        Radiation Belts
        ACOS780                ACIS-S
        MR2251-178             HRC-S /LETG  Apr 28
        ACOS780                ACIS-S
        A2319                  ACIS-I
        A1795                  ACIS-I
        PSZ2G075.85+15.53      ACIS-S       Apr 29
        2MASXJ15295830m13003   ACIS-S
        MR2251-178             HRC-S /LETG
        MASTERJ1505-1439       ACIS-S
        Radiation Belts                     Apr 30
        NGC5728_s2             ACIS-S
        MR2251-178             HRC-S /LETG


All spacecraft subsystems continued to support nominal operations.

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