RESOLVING CIRCUMNUCLEAR STRUCTURE IN SEYFERT 2 GALAXY NGC 4388
High resolution spectroscopy with Resolve will enable us to perform unprecedented studies of the circumnuclear structure of AGN using the detailed velocity structure of the narrow Fe-Ka fluorescence line. Here we propose to observe NGC 4388, which exhibits the brightest narrow Fe-Ka emission line among Compton-thin Seyfert 2 galaxies. The bright narrow Fe-K line, Compton-thin absorption, and high inclination make it the best target for studying the ``torus'' and inner region. With Resolve, we can for the first time measure the detailed line profile itself, leading to unbiased determination of matter distribution profile around the nucleus.
TELESCOP= 'XRISM ' / Mission name INSTRUME= 'XTEND ' / Instrument name OBS_ID = '201063010' / Observation identification string OBJECT = 'NGC4388 ' / Object name OBSERVER= 'YOSHIHIRO UEDA' / PI name OBS_MODE= 'POINTING' / POINTING or SLEW or ALL RA_OBJ = 186.4448 / [deg] Object Right ascension DEC_OBJ = 12.6621 / [deg] Object Declination RA_PNT = 186.442179160553 / Pointing RA DEC_PNT = 12.6613444911975 / Pointing DEC RA_NOM = 186.444277353578 / [deg] Nominal aspect point R.A. DEC_NOM = 12.662898030472 / [deg] Nominal aspect point Dec. PA_NOM = 103.000749940718 / [deg] Nominal aspect point roll. TELAPSE = 370306 / Elapsed time DATE-OBS= '2024-12-04T19:29:04' / Start date DATE-END= '2024-12-09T02:20:50' / Stop date ONTIME = 180132.89927 / On-source time EXPOSURE= 180132.89927 / Exposure time PROCVER = '03.00.013.010' / 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= 'gen20241115_xtd20241115_rsl20241115' / Version of CALDB used DATE = '2024-12-16T01:52:02' / Date and time this file was created or updated SIB2_VER= 'V03.01 ' / SIB2 version JAXA