Suzaku Observation : 801004010

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Fits Header

TELESCOP= 'SUZAKU  '           / Telescope (mission) name
OBS_ID  = '801004010'          / Observation identification string
OBSERVER= 'MAKOTO HATTORI'     / Principal Investigator
OBJECT  = 'A2104S  '           / Name of observed object
OBS_REM = '        '           / remark on observation
RA_OBJ  =             235.0313 / planned target R.A.(deg)
DEC_OBJ =              -3.4190 / planned target DEC.(deg)
RA_NOM  = 2.350317000000000E+02 / Right Ascension of target (deci. deg)
DEC_NOM = -3.413900000000000E+00 / Declination of target (deci. deg)
PA_NOM  =             117.9978 / nominal position angle from north to DETY(deg)
MEAN_EA1=     235.031732535544 / mean of the 1st ZYZ-Euler angle (deg)
MEAN_EA2=      93.413938951117 / mean of the 2nd ZYZ-Euler angle (deg)
MEAN_EA3=     332.002233512078 / mean of the 3rd ZYZ-Euler angle (deg)
DATE-OBS= '2007-01-20T07:58:47' / Start date of observations
DATE-END= '2007-01-20T19:50:19' / End date of observations
TSTART  = 2.225978670000000E+08 / time start
TSTOP   = 2.226355100000000E+08 / time stop
TELAPSE = 3.764300000000000E+04 / elapsed time
ONTIME  = 1.732338439929485E+04 / On-source time
EXPOSURE= 1.732338439929485E+04 / Exposure time
MJD-OBS = 5.412036494425926E+04 / MJD of data start time
FILIN001= 'ae801004010xi0_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= 'ae801004010xi0_0_5x5n066a_cl.evt.gz' / Input file name
FILIN003= 'ae801004010xi1_0_3x3n069b_cl.evt.gz' / Input file name
FILIN004= 'ae801004010xi1_0_5x5n069b_cl.evt.gz' / Input file name
FILIN005= 'ae801004010xi3_0_3x3n066a_cl.evt.gz' / Input file name
FILIN006= 'ae801004010xi3_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:

We propose to perform spatially resolved spectroscopy on relaxed clusters of galaxies A2104, A963 and A2261 to map their temperature out to the virial radius r_178 with 15% precision at 90% CL in a few arcmin scale. Combined with Chandra imaging of these clusters, the proposed measurements will be used for accurate virial and baryonic mass estimation assuming hydrostatic equilibrium. We use this information to calibrate the cluster M-T and L-T scaling relations, and their evolution. We will constrain the cosmological parameters Omega_M and Omega_Lambda via the baryonic fraction and the mass function. Due to the stable and low background of XIS detectors, with Suzaku it is possible to perform this challenging and cosmologically important task.