COSMIC RAY SPALLATION AND THE ENIGMATIC EXTENDED NARROW LINE REGION OF NGC 7212
The nearby (z~0.0266) Compton thick AGN NGC 7212 is, to our knowledge, the first AGN with a detection of vanadium via X-ray spectroscopy. Vanadium is a short-lived intermediate product of the spallation of iron by cosmic rays. Its presence in the narrow line region suggests ongoing strong cosmic ray feedback, and the likelihood that the energy range between 4.5 keV and iron K-alpha is likely to be dominated by more stable He-like and H-like products of spallation (such as titanium, chromium and manganese). Only XRISM has the sensitivity and resolution to measure these lines. This would have deep and consequential implications for the "hard continuum" between 2-6 keV. We will also model extended hot feedback in conjunction with archival Chandra data.
TELESCOP= 'XRISM ' / Mission name INSTRUME= 'XTEND ' / Instrument name OBS_ID = '201110020' / Observation identification string OBJECT = 'NGC7212 ' / Object name OBSERVER= 'WALTER MAKSYM' / PI name OBS_MODE= 'POINTING' / POINTING or SLEW or ALL RA_OBJ = 331.7554 / [deg] Object Right ascension DEC_OBJ = 10.2311 / [deg] Object Declination RA_PNT = 331.756018136773 / Pointing RA DEC_PNT = 10.233747120155 / Pointing DEC RA_NOM = 331.755566071962 / [deg] Nominal aspect point R.A. DEC_NOM = 10.2312160230915 / [deg] Nominal aspect point Dec. PA_NOM = 240.163080070886 / [deg] Nominal aspect point roll. TELAPSE = 77229 / Elapsed time DATE-OBS= '2024-12-18T12:41:15' / Start date DATE-END= '2024-12-19T10:08:24' / Stop date ONTIME = 42353.034299 / On-source time EXPOSURE= 42353.034299 / 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 = '2024-12-24T03:50:47' / Date and time this file was created or updated SIB2_VER= 'V03.01 ' / SIB2 version JAXA