Suzaku Observation : 408044010

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Fits Header

TELESCOP= 'SUZAKU  '           / Telescope (mission) name
OBS_ID  = '408044010'          / Observation identification string
OBSERVER= 'INGO KREYKENBOHM'   / Principal Investigator
OBJECT  = 'GRO J1008-57'       / Name of observed object
OBS_REM = '        '           / remark on observation
RA_OBJ  =             152.4417 / planned target R.A.(deg)
DEC_OBJ =             -58.2917 / planned target DEC.(deg)
RA_NOM  = 1.524313000000000E+02 / Right Ascension of target (deci. deg)
DEC_NOM = -5.829990000000000E+01 / Declination of target (deci. deg)
PA_NOM  =             115.5012 / nominal position angle from north to DETY(deg)
MEAN_EA1=     152.431343768024 / mean of the 1st ZYZ-Euler angle (deg)
MEAN_EA2=     148.299876283596 / mean of the 2nd ZYZ-Euler angle (deg)
MEAN_EA3=     334.498816728459 / mean of the 3rd ZYZ-Euler angle (deg)
DATE-OBS= '2014-01-03T15:42:56' / Start date of observations
DATE-END= '2014-01-04T14:09:15' / End date of observations
TSTART  = 4.420790830000000E+08 / time start
TSTOP   = 4.421597379283711E+08 / time stop
TELAPSE = 8.065492837107182E+04 / elapsed time
ONTIME  = 1.535286354780197E+04 / On-source time
EXPOSURE= 1.535286354780197E+04 / Exposure time
MJD-OBS = 5.666065679611111E+04 / MJD of data start time
FILIN001= 'ae408044010xi0_0_3x3b093l_cl.evt.gz' / Input file name
SEQPNUM =                    3 / Number of times this dataset processed
PROCVER = '3.0.22.44'          / Processing script version
MK1STVER= 'mk1stfits20120530'  / Version of mk1stfits used
SOFTVER = 'Hea_08Feb2016_V6.18_Suzaku_14Nov2013_V22' / Version of HEADAS used
CALDBVER= 'hxd20110913_xis20160607_xrt20110630_xrs20060410' / Version of CALDB u
FILIN002= 'ae408044010xi0_0_3x3n066l_cl.evt.gz' / Input file name
FILIN003= 'ae408044010xi0_0_5x5b093l_cl.evt.gz' / Input file name
FILIN004= 'ae408044010xi1_0_3x3b133b_cl.evt.gz' / Input file name
FILIN005= 'ae408044010xi1_0_3x3n130b_cl.evt.gz' / Input file name
FILIN006= 'ae408044010xi1_0_5x5b133b_cl.evt.gz' / Input file name
FILIN007= 'ae408044010xi3_0_3x3b096a_cl.evt.gz' / Input file name
FILIN008= 'ae408044010xi3_0_3x3n066a_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:

We propose to observe the transient XRB GRO J1008−57 for 20 ks during an outburst in 2014 January after the currently ongoing giant outburst. The source exhibits regular outbursts once per orbit. Several of these outbursts have been observed in the past showing that the spectral shape remains constant between outbursts. Since we were able to improve the orbital ephemeris it is possible to predict future outbursts of the source. The source is currently (MJD 56245) exhibiting a giant type II outburst showing that the companion has ejected large amounts of material. We therefore propose to observe the system after this outburst to check for spectral and temporal changes and to study the iron line complex to derive the amount and ionization state of the material.