Suzaku Observation : 808088010

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Fits Header

TELESCOP= 'SUZAKU  '           / Telescope (mission) name
OBS_ID  = '808088010'          / Observation identification string
OBSERVER= 'ONDREJ URBAN'       / Principal Investigator
OBJECT  = 'A426VIR W'          / Name of observed object
OBS_REM = '        '           / remark on observation
RA_OBJ  =              48.7241 / planned target R.A.(deg)
DEC_OBJ =              42.6622 / planned target DEC.(deg)
RA_NOM  = 4.873210000000000E+01 / Right Ascension of target (deci. deg)
DEC_NOM = 4.264950000000000E+01 / Declination of target (deci. deg)
PA_NOM  =             270.0001 / nominal position angle from north to DETY(deg)
MEAN_EA1=      48.732070571549 / mean of the 1st ZYZ-Euler angle (deg)
MEAN_EA2=      47.350529370660 / mean of the 2nd ZYZ-Euler angle (deg)
MEAN_EA3=     179.999940739818 / mean of the 3rd ZYZ-Euler angle (deg)
DATE-OBS= '2014-02-23T03:45:16' / Start date of observations
DATE-END= '2014-02-23T15:04:19' / End date of observations
TSTART  = 4.464423350301957E+08 / time start
TSTOP   = 4.464830346479834E+08 / time stop
TELAPSE = 4.069961778771877E+04 / elapsed time
ONTIME  = 2.476669406908751E+04 / On-source time
EXPOSURE= 2.476669406908751E+04 / Exposure time
MJD-OBS = 5.671115739831245E+04 / MJD of data start time
FILIN001= 'ae808088010xi0_0_3x3n066l_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= 'ae808088010xi1_0_3x3n130b_cl.evt.gz' / Input file name
FILIN003= 'ae808088010xi3_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

Abstract:

Our analysis of Suzaku Key Project data of the Perseus Cluster of galaxies has uncovered a significant drop in temperature, density and derived thermodynamic properties of the intra-cluster medium in the NW direction at the cluster's virial radius, suggesting the presence of a strong shock. In order to firmly confirm and further explore this feature we propose to expand upon the observation of this region. Confirmation of a shock at the virial radius will provide the first ever direct observation of the formation of a galaxy cluster and virialization of the in-falling hot gas.