ATel #17348
XRISM/Xtend Transient Search (XTS) detected an X-ray burst and possible outburst on KS 1741-293
| Date | 2025-08-22 |
|---|---|
| Author(s) | Kang et al. |
| Coordinates | RA = 266.208 deg, Dec = -29.341 deg |
| Reported flux | 1.1e-10 erg cm−2 s−1 |
Transient sources detected in this observation and reported through The Astronomer's Telegram.
XRISM/Xtend Transient Search (XTS) detected an X-ray burst and possible outburst on KS 1741-293
| Date | 2025-08-22 |
|---|---|
| Author(s) | Kang et al. |
| Coordinates | RA = 266.208 deg, Dec = -29.341 deg |
| Reported flux | 1.1e-10 erg cm−2 s−1 |
XRISM/Xtend Transient Search (XTS) detected spectral change of MAXI J1744-294: approaching soft-to-hard state transition?
| Date | 2025-08-23 |
|---|---|
| Author(s) | Kang et al. |
| Coordinates | RA = 266.418 deg, Dec = -29.013 deg |
| Reported flux | 7.6e-11 erg cm−2 s−1 |
DIRECT EVIDENCE FOR A PAST OUTFLOW OF THE GALACTIC NUCLEUS SGR A*
The objective of the observation is to get the direct evidence of the past outflow of Sgr A*. The key information is the bulk motions of the plasmas of not only the Sgr A bipolar but also the Galactic Center X-ray emission, which may have been created or affected by the Sgr A* outflow. We propose to observe four regions (region N1,N2, S1, S2), which cover the Sgr A bipolar, with 50 ks exposure respectively (total 200 ks).
TELESCOP= 'XRISM ' / Mission name INSTRUME= 'XTEND ' / Instrument name OBS_ID = '201026010' / Observation identification string OBJECT = 'SAGITTARIUS_A_N1' / Object name OBSERVER= 'HIDEKI UCHIYAMA' / PI name OBS_MODE= 'POINTING' / POINTING or SLEW or ALL RA_OBJ = 266.3727 / [deg] Object Right ascension DEC_OBJ = -28.9867 / [deg] Object Declination RA_PNT = 266.373365531005 / Pointing RA DEC_PNT = -28.985019708876 / Pointing DEC RA_NOM = 266.371484822483 / [deg] Nominal aspect point R.A. DEC_NOM = -28.9869940244087 / [deg] Nominal aspect point Dec. PA_NOM = 269.998133654639 / [deg] Nominal aspect point roll. TELAPSE = 106419 / Elapsed time DATE-OBS= '2025-08-20T05:52:52' / Start date DATE-END= '2025-08-21T11:26:31' / Stop date ONTIME = 56079.484815 / On-source time EXPOSURE= 56079.484815 / Exposure time PROCVER = '03.02.014.010' / Processing script version MKFFF = 'ISAS/JAXA' / Origin of First FITS file ORIGIN = 'GSFC/NASA' / Origin of Processed FITS file SOFTVER = 'Hea_12Mar2025_V6.35_XRISM_28Feb2025_V002' / Version of HEADAS used CALDBVER= 'gen20241115_xtd20241115_rsl20241115' / Version of CALDB used DATE = '2025-09-01T03:20:52' / Date and time this file was created or updated SIB2_VER= 'V04.00 ' / SIB2 version JAXA