Suzaku Observation : 100036010

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Fits Header

TELESCOP= 'SUZAKU  '           / Telescope (mission) name
OBS_ID  = '100036010'          / Observation identification string
OBSERVER= 'Suzaku SWG'         / Principal Investigator
OBJECT  = 'CYG X-1 '           / Name of observed object
OBS_REM = '        '           / remark on observation
RA_OBJ  =             299.5908 / planned target R.A.(deg)
DEC_OBJ =              35.2018 / planned target DEC.(deg)
RA_NOM  = 2.995907000000000E+02 / Right Ascension of target (deci. deg)
DEC_NOM = 3.518920000000000E+01 / Declination of target (deci. deg)
PA_NOM  =             276.9898 / nominal position angle from north to DETY(deg)
MEAN_EA1=     299.590690994572 / mean of the 1st ZYZ-Euler angle (deg)
MEAN_EA2=      54.810839706269 / mean of the 2nd ZYZ-Euler angle (deg)
MEAN_EA3=     173.010230547890 / mean of the 3rd ZYZ-Euler angle (deg)
DATE-OBS= '2005-10-05T04:51:39' / Start date of observations
DATE-END= '2005-10-05T15:12:19' / End date of observations
TSTART  = 1.818063705341291E+08 / time start
TSTOP   = 1.818403095118155E+08 / time stop
TELAPSE = 3.393897768640518E+04 / elapsed time
ONTIME  = 1.821297769320011E+04 / On-source time
EXPOSURE= 1.821297769320011E+04 / Exposure time
MJD-OBS = 5.364824114257094E+04 / MJD of data start time
FILIN001= 'ae100036010xi0_0_2x2n020e_cl.evt.gz' / Input file name
SEQPNUM =                    5 / 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= 'ae100036010xi1_0_3x3n021k_cl.evt.gz' / Input file name
FILIN003= 'ae100036010xi2_0_2x2n022e_cl.evt.gz' / Input file name
FILIN004= 'ae100036010xi3_0_2x2n023e_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 probe the geometry of optically-thick accretion disks which should exist around a BH even in the hard state and to verify the HXD performance to thermal cut-off in hard X-rays expected from AGN. The 1st may be done by measuring the cool disk emission with the XIS-BI, resolving the fluorescent Fe-K line with the XIS-FI and detecting the reflection continuum with the HXD. Since these features are thought to come from the optically-thick disk a simultaneous measurement will for the 1st time allow for self-consistent constraining of the disk geometry in the hard state. Cyg X-1 is the best & most secure object for this stufy and is now in the low/hard state. A 20 ks Suzaku obs. is sufficient to get a fine spectrum up to 300 keV & to determine the cutoff with a high significance.