Suzaku Observation : 808087010

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Fits Header

TELESCOP= 'SUZAKU  '           / Telescope (mission) name
OBS_ID  = '808087010'          / Observation identification string
OBSERVER= 'ONDREJ URBAN'       / Principal Investigator
OBJECT  = 'A426VIR N'          / Name of observed object
OBS_REM = '        '           / remark on observation
RA_OBJ  =              48.9474 / planned target R.A.(deg)
DEC_OBJ =              42.7926 / planned target DEC.(deg)
RA_NOM  = 4.895380000000000E+01 / Right Ascension of target (deci. deg)
DEC_NOM = 4.278110000000000E+01 / Declination of target (deci. deg)
PA_NOM  =             270.5957 / nominal position angle from north to DETY(deg)
MEAN_EA1=      48.953764098455 / mean of the 1st ZYZ-Euler angle (deg)
MEAN_EA2=      47.218925814365 / mean of the 2nd ZYZ-Euler angle (deg)
MEAN_EA3=     179.404345508288 / mean of the 3rd ZYZ-Euler angle (deg)
DATE-OBS= '2014-02-22T12:03:25' / Start date of observations
DATE-END= '2014-02-23T03:44:19' / End date of observations
TSTART  = 4.463872490000000E+08 / time start
TSTOP   = 4.464422426539903E+08 / time stop
TELAPSE = 5.499365399032831E+04 / elapsed time
ONTIME  = 2.338562142378092E+04 / On-source time
EXPOSURE= 2.338562142378092E+04 / Exposure time
MJD-OBS = 5.671051982851852E+04 / MJD of data start time
FILIN001= 'ae808087010xi0_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= 'ae808087010xi0_0_5x5n066l_cl.evt.gz' / Input file name
FILIN003= 'ae808087010xi1_0_3x3n130b_cl.evt.gz' / Input file name
FILIN004= 'ae808087010xi1_0_5x5n130b_cl.evt.gz' / Input file name
FILIN005= 'ae808087010xi3_0_3x3n066a_cl.evt.gz' / Input file name
FILIN006= 'ae808087010xi3_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:

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.