Suzaku Observation : 806139010


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Fits Header
TELESCOP= 'SUZAKU  '           / Telescope (mission) name
OBS_ID  = '806139010'          / Observation identification string
OBSERVER= 'STEVEN W. ALLEN'    / Principal Investigator
OBJECT  = 'ABELL 426 NNE3.5'   / Name of observed object
OBS_REM = '        '           / remark on observation
RA_OBJ  =              50.2194 / planned target R.A.(deg)
DEC_OBJ =              42.4527 / planned target DEC.(deg)
RA_NOM  = 5.020920000000000E+01 / Right Ascension of target (deci. deg)
DEC_NOM = 4.246120000000000E+01 / Declination of target (deci. deg)
PA_NOM  =              60.4978 / nominal position angle from north to DETY(deg)
MEAN_EA1=      50.209225746940 / mean of the 1st ZYZ-Euler angle (deg)
MEAN_EA2=      47.538801984030 / mean of the 2nd ZYZ-Euler angle (deg)
MEAN_EA3=      29.502242677622 / mean of the 3rd ZYZ-Euler angle (deg)
DATE-OBS= '2011-08-31T18:50:51' / Start date of observations
DATE-END= '2011-09-01T00:00:22' / End date of observations
TSTART  = 3.681334020000000E+08 / time start
TSTOP   = 3.681482390000000E+08 / time stop
TELAPSE = 1.483700000000000E+04 / elapsed time
ONTIME  = 1.002000000000000E+04 / On-source time
EXPOSURE= 1.002000000000000E+04 / Exposure time
MJD-OBS = 5.580480400675926E+04 / MJD of data start time
FILIN001= 'ae806139010xi0_0_3x3n066l_cl.evt.gz' / Input file name
SEQPNUM =                    3 / Number of times this dataset processed
PROCVER = ''          / 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= 'ae806139010xi1_0_3x3n130b_cl.evt.gz' / Input file name
FILIN003= 'ae806139010xi3_0_3x3n066a_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


We propose to exploit Suzaku's unique capabilities to carry out a legacy-class observation of the X-ray emitting gas to beyond the virial radius in the brightest and best cluster target: the Perseus Cluster. Our ultra-deep observation will provide unparalleled insight into the physics of the outer regions of clusters, and the tightest possible control of systematic uncertainties. We will obtain new understanding of the distributions of gas mass and total mass at large radii, as required for cosmological studies. Our study will shed new light on the thermodynamics of cluster outskirts and how large-scale filaments channel matter into clusters. This work is only possible due to Suzaku's low orbit and the low background of its detectors.