Suzaku Observation : 408002010

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Fits Header

TELESCOP= 'SUZAKU  '           / Telescope (mission) name
OBS_ID  = '408002010'          / Observation identification string
OBSERVER= 'KAZUTAKA YAMAOKA'   / Principal Investigator
OBJECT  = 'V4641 SGR'          / Name of observed object
OBS_REM = '        '           / remark on observation
RA_OBJ  =             274.8401 / planned target R.A.(deg)
DEC_OBJ =             -25.4072 / planned target DEC.(deg)
RA_NOM  = 2.748371000000000E+02 / Right Ascension of target (deci. deg)
DEC_NOM = -2.540520000000000E+01 / Declination of target (deci. deg)
PA_NOM  =              84.0004 / nominal position angle from north to DETY(deg)
MEAN_EA1=     274.837089854135 / mean of the 1st ZYZ-Euler angle (deg)
MEAN_EA2=     115.405204988474 / mean of the 2nd ZYZ-Euler angle (deg)
MEAN_EA3=       5.999553195537 / mean of the 3rd ZYZ-Euler angle (deg)
DATE-OBS= '2014-03-25T23:22:09' / Start date of observations
DATE-END= '2014-03-28T21:30:12' / End date of observations
TSTART  = 4.491049379857942E+08 / time start
TSTOP   = 4.493573920544592E+08 / time stop
TELAPSE = 2.524540686649680E+05 / elapsed time
ONTIME  = 4.927874146133661E+04 / On-source time
EXPOSURE= 4.927874146133661E+04 / Exposure time
MJD-OBS = 5.674197456215040E+04 / MJD of data start time
FILIN001= 'ae408002010xi0_0_2x2b118l_cl.evt.gz' / Input file name
SEQPNUM =                    3 / 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= 'ae408002010xi0_0_3x3b093l_cl.evt.gz' / Input file name
FILIN003= 'ae408002010xi0_0_5x5b093l_cl.evt.gz' / Input file name
FILIN004= 'ae408002010xi1_0_3x3b133b_cl.evt.gz' / Input file name
FILIN005= 'ae408002010xi1_0_3x3b135b_cl.evt.gz' / Input file name
FILIN006= 'ae408002010xi1_0_5x5b133b_cl.evt.gz' / Input file name
FILIN007= 'ae408002010xi3_0_2x2b119a_cl.evt.gz' / Input file name
FILIN008= 'ae408002010xi3_0_3x3b096a_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 a 100 ksec Suzaku observation of the Galactic microquasar V4641 Sgr in an outburst. V4641 Sgr has many unique charactersitics: 1)giant X-ray outbursts with fast rise and decay times, 2)violent variability in X-ray and optical bands, and 3)remarkable iron-K disk-line profiles in the X-ray spectrum. However, it is hardly understood due to the poor X-ray coverage which results from its short outburst duration and rapid intensity variations. Hence, we collaborate closely with VSNET, MAXI/GSC, Swift/XRT and Swift/BAT team for a rapid trigger. The moderate energy resolution and wideband energy coverage of Suzaku enable us to clarify the radiation mechanisms of V4641 Sgr. This observation is now planned simultaneously with Swift, many radio and optical/NIR observatories.