IRONING-OUT THE ACCRETION FLOW IN SEYFERT AGN WITH MRK 279
Observations of extreme variability in the narrow Fe K-alpha emission line - independent of a moderately broad line component - demonstrate that multiple geometries can be explored in the Sy-1.5 AGN Mrk 279. This makes it an optimal target for XRISM Cycle 1. Variability in the narrow line component suggests a modest radius and extent, consistent with the optical broad line region. The "broad" Fe Ka component is not extreme and suggests a truncated inner disk and/or one with a warp. We request a 150 ks obs. of Mrk 279 in XRISM Cycle 1 to (1) precisely locate the Fe Ka emission components within the accretion flow, (2) compare the radii and geometries to optical line constraints, (3) test models of warped and/or truncated disks, (4) study ionized winds in emission.
TELESCOP= 'XRISM ' / Mission name INSTRUME= 'XTEND ' / Instrument name OBS_ID = '201083010' / Observation identification string OBJECT = 'MRK279 ' / Object name OBSERVER= 'JON MILLER' / PI name OBS_MODE= 'POINTING' / POINTING or SLEW or ALL RA_OBJ = 208.2643 / [deg] Object Right ascension DEC_OBJ = 69.3082 / [deg] Object Declination RA_PNT = 208.270861767659 / Pointing RA DEC_PNT = 69.3228670335357 / Pointing DEC RA_NOM = 208.265704473003 / [deg] Nominal aspect point R.A. DEC_NOM = 69.3083590364527 / [deg] Nominal aspect point Dec. PA_NOM = 210.817867071641 / [deg] Nominal aspect point roll. TELAPSE = 301858.963135988 / Elapsed time DATE-OBS= '2024-09-19T20:47:41.036864' / Start date DATE-END= '2024-09-23T08:38:40' / Stop date ONTIME = 165463.1118 / On-source time EXPOSURE= 165463.1118 / Exposure time PROCVER = '03.00.013.009' / Processing script version MKFFF = 'ISAS/JAXA' / Origin of First FITS file ORIGIN = 'GSFC/NASA' / Origin of Processed FITS file SOFTVER = 'Hea_21Aug2024_V6.34_XRISM_21Aug2024_V001' / Version of HEADAS used CALDBVER= 'gen20240315_xtd20240815_rsl20240815' / Version of CALDB used DATE = '2024-09-28T07:17:20' / Date and time this file was created or updated SIB2_VER= 'V03.01 ' / SIB2 version JAXA