Suzaku Observation : 407015010

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Fits Header

TELESCOP= 'SUZAKU  '           / Telescope (mission) name
OBS_ID  = '407015010'          / Observation identification string
OBSERVER= 'SHINYA YAMADA'      / Principal Investigator
OBJECT  = 'CYG X-1 '           / Name of observed object
OBS_REM = '        '           / remark on observation
RA_OBJ  =             299.5907 / planned target R.A.(deg)
DEC_OBJ =              35.1892 / planned target DEC.(deg)
RA_NOM  = 2.995875000000000E+02 / Right Ascension of target (deci. deg)
DEC_NOM = 3.520310000000000E+01 / Declination of target (deci. deg)
PA_NOM  =              88.7802 / nominal position angle from north to DETY(deg)
MEAN_EA1=     299.587461155211 / mean of the 1st ZYZ-Euler angle (deg)
MEAN_EA2=      54.796858567318 / mean of the 2nd ZYZ-Euler angle (deg)
MEAN_EA3=       1.219751357962 / mean of the 3rd ZYZ-Euler angle (deg)
DATE-OBS= '2013-04-08T02:17:18' / Start date of observations
DATE-END= '2013-04-09T23:00:19' / End date of observations
TSTART  = 4.187049452693344E+08 / time start
TSTOP   = 4.188632215401365E+08 / time stop
TELAPSE = 1.582762708020806E+05 / elapsed time
ONTIME  = 9.407488827824593E+03 / On-source time
EXPOSURE= 9.407488827824593E+03 / Exposure time
MJD-OBS = 5.639012279459878E+04 / MJD of data start time
FILIN001= 'ae407015010xi0_0_2x2b122h_cl.evt.gz' / Input file name
SEQPNUM =                    2 / 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= 'ae407015010xi0_0_2x2b122l_cl.evt.gz' / Input file name
FILIN003= 'ae407015010xi1_0_3x3b120b_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 Cyg X-1 for 85 ks, utilizing P-sum mode for XIS3. Our aim is to perform shot analysis, which is originally invented by Negoro et al. 1995 with Ginga, and obtain high-quality wide-band spectra for several phases in less than 1 sec; for example, 0.1 sec before the peak, +/- 0.05 sec at the peak, and after the peak. With these spectra, we will quantify changes in five spectral components: hard Comptonization, soft Comptonization, disk emission, Fe-K lines, and reflection. This will be a clue to know long-standing mystery on rapid variability in black holes.