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LED BY SWIFT INTENSIVE DISK REVERBERATION MAPPING (IDRM) IS PROVIDING NEW INSIGHTS INTO THE PHYSICS OF ACTIVE GALACTIC NUCLEI (AGN) AND STRONGLY CHALLENGING THE STANDARD THIN ACCRETION DISK/REPROCESSING MODEL OF AGN CENTRAL ENGINES. FAIRALL 9 IS A "BARE" AGN WITH VERY LOW ABSORPTION SIMPLIFYING ITS PHYSICAL INTERPRETATION. THIS PLUS THE FACT THAT IT IS OBSERVABLE BY SWIFT THROUGHOUT THE YEAR MAKES IT AN IDEAL IDRM TARGET. WE REQUEST 650 X 500 S DAILY VISITS FOR WHICH WE WILL ALSO OBTAIN GROUND-BASED UGRIZ AT A SIMILAR CADENCE TO MEASURE THE INTERBAND LAG-WAVELENGTH RELATION TO PERFORM ECHO MAPPING ON THE DISK. WE WILL ALSO REQUEST HST MONITORING IN YEAR 2 OF THE CAMPAIGN TO MEASURE THE LAG SPECTRUM AND DISENTANGLE CONTRIBUTIONS TO THE LAGS FROM THE DISK AND BROAD-LINE REGION.

$77,734FY2020National Aeronautics and Space AdministrationNASA

University Of Maryland, College Park, College Park MD

Investigators

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