Suzaku Observation : 808090010

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Fits Header

TELESCOP= 'SUZAKU  '           / Telescope (mission) name
OBS_ID  = '808090010'          / Observation identification string
OBSERVER= 'AURORA SIMIONESCU'  / Principal Investigator
OBJECT  = 'COMA W SHOCK1'      / Name of observed object
OBS_REM = '        '           / remark on observation
RA_OBJ  =             194.2088 / planned target R.A.(deg)
DEC_OBJ =              28.2783 / planned target DEC.(deg)
RA_NOM  = 1.941832000000000E+02 / Right Ascension of target (deci. deg)
DEC_NOM = 2.827380000000000E+01 / Declination of target (deci. deg)
PA_NOM  =             275.4060 / nominal position angle from north to DETY(deg)
MEAN_EA1=     194.183247637047 / mean of the 1st ZYZ-Euler angle (deg)
MEAN_EA2=      61.726155769898 / mean of the 2nd ZYZ-Euler angle (deg)
MEAN_EA3=     174.594025495832 / mean of the 3rd ZYZ-Euler angle (deg)
DATE-OBS= '2013-07-02T07:24:07' / Start date of observations
DATE-END= '2013-07-02T15:52:12' / End date of observations
TSTART  = 4.260650579320521E+08 / time start
TSTOP   = 4.260950480000000E+08 / time stop
TELAPSE = 2.999006794786453E+04 / elapsed time
ONTIME  = 1.671596974670887E+04 / On-source time
EXPOSURE= 1.671596974670887E+04 / Exposure time
MJD-OBS = 5.647530928375060E+04 / MJD of data start time
FILIN001= 'ae808090010xi0_0_3x3n066l_cl.evt.gz' / Input file name
SEQPNUM =                    2 / 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= 'ae808090010xi0_0_5x5n066l_cl.evt.gz' / Input file name
FILIN003= 'ae808090010xi1_0_3x3n130b_cl.evt.gz' / Input file name
FILIN004= 'ae808090010xi1_0_5x5n130b_cl.evt.gz' / Input file name
FILIN005= 'ae808090010xi3_0_3x3n066a_cl.evt.gz' / Input file name
FILIN006= 'ae808090010xi3_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 data of the Coma Cluster revealed an intriguing correlation between the outer edge of its radio halo and the thermodynamic properties of the gas. This correlation seems to be the most pronounced in the western direction where the temperature drops from about 10keV in the annulus spanning 35'-41' to only 1.7keV in the annulus spanning 50'-60'. The Planck Collaboration found a marked local steepening of the radial gradient of the SZ signal at this location and interpret this feature as a shock with a Mach number of about 2. Unfortunately, we currently lack X-ray coverage towards the W in this critical range of 41'-50'. We therefore propose two additional pointings with a total exposure time of 30ks, that will allow us to resolve the temperature gradient in this region.