Suzaku Observation : 808064010

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Fits Header

TELESCOP= 'SUZAKU  '           / Telescope (mission) name
OBS_ID  = '808064010'          / Observation identification string
OBSERVER= 'DAVID A. BUOTE'     / Principal Investigator
OBJECT  = 'RXJ1416.4+2315'     / Name of observed object
OBS_REM = '        '           / remark on observation
RA_OBJ  =             214.0648 / planned target R.A.(deg)
DEC_OBJ =              23.3553 / planned target DEC.(deg)
RA_NOM  = 2.140623000000000E+02 / Right Ascension of target (deci. deg)
DEC_NOM = 2.334580000000000E+01 / Declination of target (deci. deg)
PA_NOM  =             292.6710 / nominal position angle from north to DETY(deg)
MEAN_EA1=     214.062329277020 / mean of the 1st ZYZ-Euler angle (deg)
MEAN_EA2=      66.654158405222 / mean of the 2nd ZYZ-Euler angle (deg)
MEAN_EA3=     157.328979929405 / mean of the 3rd ZYZ-Euler angle (deg)
DATE-OBS= '2013-07-23T15:26:10' / Start date of observations
DATE-END= '2013-07-26T08:02:16' / End date of observations
TSTART  = 4.279110640000000E+08 / time start
TSTOP   = 4.281409191177562E+08 / time stop
TELAPSE = 2.298551177561879E+05 / elapsed time
ONTIME  = 1.229316595008969E+05 / On-source time
EXPOSURE= 1.229316595008969E+05 / Exposure time
MJD-OBS = 5.649667509472222E+04 / MJD of data start time
FILIN001= 'ae808064010xi0_0_3x3n066l_cl.evt.gz' / Input file name
SEQPNUM =                    4 / 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= 'ae808064010xi0_0_5x5n066l_cl.evt.gz' / Input file name
FILIN003= 'ae808064010xi1_0_3x3n130b_cl.evt.gz' / Input file name
FILIN004= 'ae808064010xi1_0_5x5n130b_cl.evt.gz' / Input file name
FILIN005= 'ae808064010xi3_0_3x3n066a_cl.evt.gz' / Input file name
FILIN006= 'ae808064010xi3_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 preliminary analysis of AO7 XIS data of the fossil cluster RXJ 1416.4+2315 does not find evidence for the gas clumping invoked to explain the flat entropy profiles and large gas fractions found near r_vir in several nearby clusters. Instead its ICM properties at r_vir are consistent with adiabatic cluster formation as we found previously for the fossil group/cluster RXJ 1159+5531, which may reflect that hydrostatic equilibrium is very accurate in these highly evolved fossil systems. Therefore, we propose a Suzaku observation in a different azimuthal direction to double the azimuthal coverage at r_vir (from ~30% to ~60%) in order to test for the presence of azimuthal ICM variations expected for clusters that grow by accretion along large-scale filaments.