Suzaku Observation : 801030010

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Fits Header

TELESCOP= 'SUZAKU  '           / Telescope (mission) name
OBS_ID  = '801030010'          / Observation identification string
OBSERVER= 'YUTAKA FUJITA'      / Principal Investigator
OBJECT  = 'OPHIUCHUS CLUSTER BG' / Name of observed object
OBS_REM = '        '           / remark on observation
RA_OBJ  =             257.0171 / planned target R.A.(deg)
DEC_OBJ =             -25.0644 / planned target DEC.(deg)
RA_NOM  = 2.570147000000000E+02 / Right Ascension of target (deci. deg)
DEC_NOM = -2.506120000000000E+01 / Declination of target (deci. deg)
PA_NOM  =              89.7146 / nominal position angle from north to DETY(deg)
MEAN_EA1=     257.014718991658 / mean of the 1st ZYZ-Euler angle (deg)
MEAN_EA2=     115.061153659972 / mean of the 2nd ZYZ-Euler angle (deg)
MEAN_EA3=       0.285367545457 / mean of the 3rd ZYZ-Euler angle (deg)
DATE-OBS= '2007-03-24T13:35:22' / Start date of observations
DATE-END= '2007-03-24T22:00:24' / End date of observations
TSTART  = 2.280598870000000E+08 / time start
TSTOP   = 2.280888094296490E+08 / time stop
TELAPSE = 2.892242964896560E+04 / elapsed time
ONTIME  = 1.530630073830485E+04 / On-source time
EXPOSURE= 1.530630073830485E+04 / Exposure time
MJD-OBS = 5.418358276833333E+04 / MJD of data start time
FILIN001= 'ae801030010xi0_0_3x3n066a_cl.evt.gz' / Input file name
SEQPNUM =                    3 / 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= 'ae801030010xi0_0_5x5n066a_cl.evt.gz' / Input file name
FILIN003= 'ae801030010xi1_0_3x3n069b_cl.evt.gz' / Input file name
FILIN004= 'ae801030010xi1_0_5x5n069b_cl.evt.gz' / Input file name
FILIN005= 'ae801030010xi3_0_3x3n066a_cl.evt.gz' / Input file name
FILIN006= 'ae801030010xi3_0_5x5n066a_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:

The Ophiuchus cluster is one of the few galaxy clusters from which hard X-ray emission was detected with INTEGRAL. The confidence level is higher than that of the Coma cluster. The hard X-ray emission was also detected with BeppoSAX. Complicated temperature structure observed with ASCA indicated that the cluster is in a merger phase at present. The hard X-ray emission is possibly originated from the cluster merger and the resultant particle acceleration. We propose a Suzaku observation of the cluster to reveal the mechanism of the particle acceleration in clusters.