EXPLORING THE NATURE OF AGN FEEDBACK NEAR THE COCOON OF CYGNUS A
The core region of Cygnus A hosts a remarkably powerful, high-Mach number cocoon shock with an energy up to 10^61 erg. This is clearly a very dynamical example of interaction between the central SMBH and the surrounding gas that should leave unique imprints on the velocity of the ICM. Owing to the high X-ray temperature and brightness of this source, a relatively short 45 ks XRISM observation is sufficient to provide a wealth of velocity diagnostics, including line shifts, widths, shapes, and line strengths which will constrain the resonant scattering effect. These complementary probes of the gas kinematics, sensitive to motions on different scales and their anisotropy, will allow us to study both the small-scale turbulence, and the large-scale motions due to the cocoon shock's expansion.
TELESCOP= 'XRISM ' / Mission name INSTRUME= 'XTEND ' / Instrument name OBS_ID = '201120010' / Observation identification string OBJECT = 'CYGNUS_A' / Object name OBSERVER= 'ANWESH MAJUMDER' / PI name OBS_MODE= 'POINTING' / POINTING or SLEW or ALL RA_OBJ = 299.8682 / [deg] Object Right ascension DEC_OBJ = 40.7339 / [deg] Object Declination RA_PNT = 299.885269979758 / Pointing RA DEC_PNT = 40.7382711034358 / Pointing DEC RA_NOM = 299.866945238504 / [deg] Nominal aspect point R.A. DEC_NOM = 40.7336880725884 / [deg] Nominal aspect point Dec. PA_NOM = 275.391151825496 / [deg] Nominal aspect point roll. TELAPSE = 264681.90625 / Elapsed time DATE-OBS= '2024-10-06T22:41:07.093750' / Start date DATE-END= '2024-10-10T00:12:29' / Stop date ONTIME = 132243.08593 / On-source time EXPOSURE= 132243.08593 / 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 = '2024-10-17T05:48:39' / Date and time this file was created or updated SIB2_VER= 'V03.01 ' / SIB2 version JAXA