DDT TOO REQUEST OF MAXI J1744-294
MAXI J1744-294 is a newly discovered X-ray transient located just 25" from Sgr A*, confirmed by NinjaSAT and Swift-BAT/XRT. Recent observations with NuSTAR indicate it is a black hole (BH) transient in a soft state. In the central parsec region near Sgr A*, known BH transients may exhibit outbursts with a several-decades recurrent time, with the last occurrence being in 2016. This suggests that MAXI J1744-294 may not erupt again for decades, potentially making it the only BH outburst in the Galactic Center during the XRISM operation. Given the rarity of such events, we propose a joint XRISM observation alongside scheduled ones with NuSTAR, XMM, and Chandra to capitalize on this unique opportunity to study the transient.
TELESCOP= 'XRISM ' / Mission name INSTRUME= 'XTEND ' / Instrument name OBS_ID = '901002010' / Observation identification string OBJECT = 'MAXI_J1744-294' / Object name OBSERVER= 'XRISM Collaboration' / PI name OBS_MODE= 'POINTING' / POINTING or SLEW or ALL RA_OBJ = 266.4247 / [deg] Object Right ascension DEC_OBJ = -29.0097 / [deg] Object Declination RA_PNT = 266.422392797444 / Pointing RA DEC_PNT = -29.0111139744076 / Pointing DEC RA_NOM = 266.424274153659 / [deg] Nominal aspect point R.A. DEC_NOM = -29.0091398110556 / [deg] Nominal aspect point Dec. PA_NOM = 90.002521555181 / [deg] Nominal aspect point roll. TELAPSE = 129632.963135988 / Elapsed time DATE-OBS= '2025-03-03T12:03:17.036864' / Start date DATE-END= '2025-03-05T00:03:50' / Stop date ONTIME = 74134.458647 / On-source time EXPOSURE= 74134.458647 / 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 = '2025-03-11T02:47:16' / Date and time this file was created or updated SIB2_VER= 'V03.01 ' / SIB2 version JAXA