Suzaku Observation : 902003010


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Fits Header
TELESCOP= 'SUZAKU  '           / Telescope (mission) name
OBS_ID  = '902003010'          / Observation identification string
OBSERVER= 'N/A SUZAKU TEAM'    / 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  = 1.524324000000000E+02 / Right Ascension of target (deci. deg)
DEC_NOM = -5.829880000000000E+01 / Declination of target (deci. deg)
PA_NOM  =             104.6149 / nominal position angle from north to DETY(deg)
MEAN_EA1=     152.432415330822 / mean of the 1st ZYZ-Euler angle (deg)
MEAN_EA2=     148.298768266877 / mean of the 2nd ZYZ-Euler angle (deg)
MEAN_EA3=     345.385133559854 / mean of the 3rd ZYZ-Euler angle (deg)
DATE-OBS= '2007-11-30T11:32:46' / Start date of observations
DATE-END= '2007-12-01T19:15:19' / End date of observations
TSTART  = 2.497375727683660E+08 / time start
TSTOP   = 2.498517087498986E+08 / time stop
TELAPSE = 1.141359815326333E+05 / elapsed time
ONTIME  = 4.778139074429870E+04 / On-source time
EXPOSURE= 4.778139074429870E+04 / Exposure time
MJD-OBS = 5.443448190917090E+04 / MJD of data start time
FILIN001= 'ae902003010xi0_0_3x3b093a_cl.evt.gz' / Input file name
SEQPNUM =                    2 / Number of times this dataset processed
PROCVER = ''          / 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= 'ae902003010xi0_0_5x5b093a_cl.evt.gz' / Input file name
FILIN003= 'ae902003010xi1_0_3x3n091b_cl.evt.gz' / Input file name
FILIN004= 'ae902003010xi1_0_5x5n091b_cl.evt.gz' / Input file name
FILIN005= 'ae902003010xi3_0_3x3n092a_cl.evt.gz' / Input file name
FILIN006= 'ae902003010xi3_0_5x5n092a_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


The cyclotron resonance is a direct method to know the surface magnetic field of X-ray binary pulsars. It was measured from a little more than ten X-ray pulsars. The flares of the Be transient pulsars are rare occasions that we can measure it. For this X-ray binary pulsar GRO J1008-57, Suzaku HXD GSO is the only useful detector. The inferred resonance energy of 90 keV will be the highest resonance energy. It locates at the higher end of the resonance energy distribution. Considering the span of the flares, this will be the first and the last chance for Suzaku to observe GRO J1008-57, and generally speaking, a feature at ~100keV.