XRISM XTEND observation 900001010

Title

UNDERSTANDING DISK WINDS IN TRANSIENT BLACK HOLE X-RAY BINARIES

Abstract

We propose two ToO observations of a Galactic transient black hole X-ray binary with a high inclination angle, at different spectral states during its outburst. The main science goal is to understand the launching mechanism of disk winds in black hole X-ray binaries and the evolution of the wind structure in their outbursts. Resolve 50 ks observations enable us to obtain the velocity structure of the winds by resolving the detailed profiles of Fe XXV He alpha and Fe XXVI Ly alpha absorption lines. The line profile can also constrain the geometry of the wind, which makes possible to accurately estimate the mass loss rate. Resolve is also capable of detecting weak absorption lines in the states where significant lines have rarely been observed.

FITS header

TELESCOP= 'XRISM   '           / Mission name
INSTRUME= 'XTEND   '           / Instrument name
OBS_ID  = '900001010'          / Observation identification string
OBJECT  = '4U1630-472'         / Object name
OBSERVER= 'XRISM Collaboration' / PI name
OBS_MODE= 'POINTING'           / POINTING or SLEW or ALL
RA_OBJ  =             248.5067 / [deg] Object Right ascension
DEC_OBJ =              -47.393 / [deg] Object Declination
RA_PNT  =     248.486560789496 / Pointing RA
DEC_PNT =     -47.398344429705 / Pointing DEC
RA_NOM  =     248.506607045703 / [deg] Nominal aspect point R.A.
DEC_NOM =    -47.3928986333427 / [deg] Nominal aspect point Dec.
PA_NOM  =     91.7899398780334 / [deg] Nominal aspect point roll.
TELAPSE =        100594.765625 / Elapsed time
DATE-OBS= '2024-02-16T01:00:23.234375' / Start date
DATE-END= '2024-02-17T04:56:58' / Stop date
ONTIME  =         48017.648103 / On-source time
EXPOSURE=         48017.648103 / 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    = '2024-09-20T19:48:00' / Date and time this file was created or updated
SIB2_VER=                      / SIB2 version JAXA

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