Suzaku Observation : 405058040

QL FITS Image

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Fits Header
TELESCOP= 'SUZAKU  '           / Telescope (mission) name
OBS_ID  = '405058040'          / Observation identification string
OBSERVER= 'R DIGER RUEDIGER STA STAUBERT' / Principal Investigator
OBJECT  = 'HER X-1 '           / Name of observed object
OBS_REM = '        '           / remark on observation
RA_OBJ  =             254.4575 / planned target R.A.(deg)
DEC_OBJ =              35.3424 / planned target DEC.(deg)
RA_NOM  = 2.544619000000000E+02 / Right Ascension of target (deci. deg)
DEC_NOM = 3.526590000000000E+01 / Declination of target (deci. deg)
PA_NOM  =             268.3041 / nominal position angle from north to DETY(deg)
MEAN_EA1=     254.461868551647 / mean of the 1st ZYZ-Euler angle (deg)
MEAN_EA2=      54.734099909728 / mean of the 2nd ZYZ-Euler angle (deg)
MEAN_EA3=     181.695915118873 / mean of the 3rd ZYZ-Euler angle (deg)
DATE-OBS= '2010-09-22T19:02:56' / Start date of observations
DATE-END= '2010-09-23T05:55:19' / End date of observations
TSTART  = 3.384994540000000E+08 / time start
TSTOP   = 3.385365074339343E+08 / time stop
TELAPSE = 3.705343393433094E+04 / elapsed time
ONTIME  = 2.179599965733290E+04 / On-source time
EXPOSURE= 2.179599965733290E+04 / Exposure time
MJD-OBS = 5.546181849750000E+04 / MJD of data start time
FILIN001= 'ae405058040xi0_0_3x3n090l_cl.evt.gz' / Input file name
SEQPNUM =                    2 / 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= 'ae405058040xi1_0_3x3n101b_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 Her X-1 during Suzaku s AO-5 for a total observing time of 80 ksec, covering one Main-On with four observations of 20 ks each: the first two during the flux maximum and the remaining two during the decay of the Main-On. Our prime objective is to systematically study the centroid energy of the fundamental cyclotron line Ecyc as a function of time, X-ray flux, 35 day phase and 1.24 s phase. These observations will contribute to answering the following questions: Is there a slow secular decrease in the value of Ecyc with time? Does Ecyc depend on 35 day phase? How stable is the positive correlation of the value of Ecyc with the X-ray luminosity?