Chandra Press Room :: Operations CXO Status Reports

Operations CXO Status Report

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

Chandra passed through the 4th, 5th, and 6th eclipses of the season on Oct 8, 11, and 14 respectively, with nominal power and thermal performance.

A Chandra press release was issued on Oct 13 describing observations that provide evidence for "missing" mass in the form of gigantic strands, or filaments, of superheated gas. This proposed difficult-to-detect matter is known as the "warm-hot intergalactic medium" or WHIM. Scientists have used NASA's Chandra X-ray Observatory to look for the WHIM for years, but few searches have been successful. A new Chandra study of colliding galaxy clusters in Abell 98 provides new signs for the existence of the WHIM. For details see: https://chandra.harvard.edu/press/22_releases/press_101322.html

Of note this week was the release of the Sherpa 4.15.0 package for Python. This release includes various enhancements, documentation updates, bug fixes, and infrastructure changes. For details see: https://github.com/sherpa/sherpa/releases/tag/4.15.0

The schedule of targets for the next week is shown below and includes an observation of AT2022tsd, which was accepted as a Target of Opportunity on Oct 7 and is coordinated with NuSTAR, an observation of Gaia BH1, which was accepted as a Director's Discretionary Time Target of Opportunity, and an observation of Swift J1913.1+1946, which was accepted as a Director's Discretionary Time Target of Opportunity on Oct 12.

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        Radiation Belts                     Oct 16
        AT2022tsd              ACIS-S
        SDSSJ090045.29+33542   ACIS-S       Oct 17
        M33                    ACIS-S
        SwiftJ1913.1+1946      ACIS-I
        M33                    ACIS-S
        PSZ2G075.85+15.53      ACIS-S       Oct 18
        SDSSJ001900.30+1507    ACIS-S
        GX3+1                  ACIS-S/HETG
        CasA (2 obs)           ACIS-I
        CasA (5 obs)           ACIS-S       Oct 19
        Radiation Belts
        [GMV2015]ASW0009io9    ACIS-S
        PSRJ1015-5719          ACIS-I
        [GMV2015]ASW0009io9    ACIS-S       Oct 20
        PSRJ1015-5719          ACIS-I
        [GMV2015]ASW0009io9    ACIS-S
        UM85                   ACIS-S
        2MASXJ17050125-2445    ACIS-S
        PKS1830-211            ACIS-S
        2RXSJ011345.6+07344    ACIS-S
        GX3+1                  ACIS-S/HETG  Oct 21
        GX3+1                  ACIS-S/HETG
        CasA (5 obs)           ACIS-S
        CasA (3 obs)           ACIS-I
        Radiation Belts                     Oct 22
        FYCMa                  ACIS-S
        GaiaDR276117304500     ACIS-S
        HD82443                ACIS-S
        [GMV2015]ASW0009io9    ACIS-S
        2MASSJ23482570-1259    ACIS-S
        2MASXJ17050125-2445    ACIS-S
        4U1907+09              ACIS-S/HETG  Oct 23
        GaiaBH1                ACIS-S
        SDSSJ163810.07+1151    ACIS-S
        CasA (5 obs)           ACIS-I
        A2319                  ACIS-I       Oct 24
        Radiation Belts

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All spacecraft subsystems except HRC continued to support nominal operations.

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Revised: July 08, 2022