Suzaku Observation : 402059010

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Fits Header

TELESCOP= 'SUZAKU  '           / Telescope (mission) name
OBS_ID  = '402059010'          / Observation identification string
OBSERVER= 'JEAN COTTAM'        / Principal Investigator
OBJECT  = '2S 0921-630'        / Name of observed object
OBS_REM = '        '           / remark on observation
RA_OBJ  =             140.6467 / planned target R.A.(deg)
DEC_OBJ =             -63.2940 / planned target DEC.(deg)
RA_NOM  = 1.406655000000000E+02 / Right Ascension of target (deci. deg)
DEC_NOM = -6.329800000000000E+01 / Declination of target (deci. deg)
PA_NOM  =               8.3442 / nominal position angle from north to DETY(deg)
MEAN_EA1=     140.665473902717 / mean of the 1st ZYZ-Euler angle (deg)
MEAN_EA2=     153.297995220989 / mean of the 2nd ZYZ-Euler angle (deg)
MEAN_EA3=      81.655794836553 / mean of the 3rd ZYZ-Euler angle (deg)
DATE-OBS= '2007-08-23T21:17:19' / Start date of observations
DATE-END= '2007-08-24T23:50:14' / End date of observations
TSTART  = 2.412191113042573E+08 / time start
TSTOP   = 2.413137960000000E+08 / time stop
TELAPSE = 9.468469574272633E+04 / elapsed time
ONTIME  = 4.313099568876624E+04 / On-source time
EXPOSURE= 4.313099568876624E+04 / Exposure time
MJD-OBS = 5.433588860518816E+04 / MJD of data start time
FILIN001= 'ae402059010xi0_0_3x3n066a_cl.evt.gz' / Input file name
SEQPNUM =                    4 / Number of times this dataset processed
PROCVER = '3.0.22.43'          / Processing script version
MK1STVER= 'mk1stfits20120530'  / Version of mk1stfits used
SOFTVER = 'Hea_08Feb2016_V6.18_Suzaku_14Nov2013_V22' / Version of HEADAS used
CALDBVER= 'hxd20110913_xis20151005_xrt20110630_xrs20060410' / Version of CALDB u
FILIN002= 'ae402059010xi0_0_5x5n066a_cl.evt.gz' / Input file name
FILIN003= 'ae402059010xi1_0_3x3n069b_cl.evt.gz' / Input file name
FILIN004= 'ae402059010xi1_0_5x5n069b_cl.evt.gz' / Input file name
FILIN005= 'ae402059010xi3_0_3x3n066a_cl.evt.gz' / Input file name
FILIN006= 'ae402059010xi3_0_5x5n066a_cl.evt.gz' / Input file name
COMMENT -------------------------
COMMENT BITPIX compressed from 32 to 8.
COMMENT Pixel values greater than 255 was set to 255.
COMMENT This file was made for JUDO-Suzaku.
COMMENT -------------------------
COMMENT   FITS (Flexible Image Transport System) format is defined in 'Astronomy

Abstract:

2S 0921-630 is a bright, long-period LMXB that is thought to contain an accretion disk corona. Observations with both the Chandra HETGS and XMM-Newton spectrometers revealed line emission from a photoionized plasma. The spectral features are consistent with the predictions for emission from an accretion disk corona. However, with the present data it is impossible to determine whether the emission originates in the corona or in a localized region of the disk. We propose to observer 2S 0921-630 with Suzaku at four orbital phases in order to localize and identify the emitting plasma. The simultaneous HXD coverage will also allow us to constrain the underlying continuum and allow more sensitive study of the high energy region of the spectrum.