Suzaku Observation : 407035010

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Fits Header

TELESCOP= 'SUZAKU  '           / Telescope (mission) name
OBS_ID  = '407035010'          / Observation identification string
OBSERVER= 'TAKAYUKI HAYASHI'   / Principal Investigator
OBJECT  = 'U GEM IN OUTBURST'  / Name of observed object
OBS_REM = '        '           / remark on observation
RA_OBJ  =             118.7718 / planned target R.A.(deg)
DEC_OBJ =              22.0014 / planned target DEC.(deg)
RA_NOM  = 1.187732000000000E+02 / Right Ascension of target (deci. deg)
DEC_NOM = 2.199280000000000E+01 / Declination of target (deci. deg)
PA_NOM  =             281.1170 / nominal position angle from north to DETY(deg)
MEAN_EA1=     118.773216603535 / mean of the 1st ZYZ-Euler angle (deg)
MEAN_EA2=      68.007159824728 / mean of the 2nd ZYZ-Euler angle (deg)
MEAN_EA3=     168.882952520817 / mean of the 3rd ZYZ-Euler angle (deg)
DATE-OBS= '2012-04-12T09:51:10' / Start date of observations
DATE-END= '2012-04-13T18:00:14' / End date of observations
TSTART  = 3.875410660000000E+08 / time start
TSTOP   = 3.876546639852836E+08 / time stop
TELAPSE = 1.135979852836132E+05 / elapsed time
ONTIME  = 5.025469059616327E+04 / On-source time
EXPOSURE= 5.025469059616327E+04 / Exposure time
MJD-OBS = 5.602942974750000E+04 / MJD of data start time
FILIN001= 'ae407035010xi0_0_3x3n066q_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= 'ae407035010xi0_0_5x5n066q_cl.evt.gz' / Input file name
FILIN003= 'ae407035010xi1_0_3x3n130b_cl.evt.gz' / Input file name
FILIN004= 'ae407035010xi1_0_5x5n130b_cl.evt.gz' / Input file name
FILIN005= 'ae407035010xi3_0_3x3n066c_cl.evt.gz' / Input file name
FILIN006= 'ae407035010xi3_0_5x5n066c_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:

It has been believed that the optically thin boundary layer in dwarf novae (DNe) turns into optically thick state in outburst, and, as a result, hard optically thin X-ray emission becomes weaker than in quiescence. This theory was verified in multi-waveband observations of SS Cyg. The DN U Gem, however, does not follow this scenario, and the hard X-ray intensity increases in outburst as well as soft X-ray emission. We propose ToO observations of U Gem both in quiescence and in outburst in order to understand behavior of DNe in X-rays in general, by means of detailed spectroscopy of the soft disk blackbody component, the hard component reflected off the white dwarf, and a 6.4 keV iron line. This study eventually enables us to understand the origin of the Galactic Ridge X-ray Emission.