Suzaku Observation : 807065010

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Fits Header

TELESCOP= 'SUZAKU  '           / Telescope (mission) name
OBS_ID  = '807065010'          / Observation identification string
OBSERVER= 'DAVID A. BUOTE'     / Principal Investigator
OBJECT  = 'RXJ1416.4+2315'     / Name of observed object
OBS_REM = '        '           / remark on observation
RA_OBJ  =             214.0500 / planned target R.A.(deg)
DEC_OBJ =              23.1836 / planned target DEC.(deg)
RA_NOM  = 2.140475000000000E+02 / Right Ascension of target (deci. deg)
DEC_NOM = 2.317010000000000E+01 / Declination of target (deci. deg)
PA_NOM  =             293.1172 / nominal position angle from north to DETY(deg)
MEAN_EA1=     214.047541668168 / mean of the 1st ZYZ-Euler angle (deg)
MEAN_EA2=      66.829934478914 / mean of the 2nd ZYZ-Euler angle (deg)
MEAN_EA3=     156.882843577127 / mean of the 3rd ZYZ-Euler angle (deg)
DATE-OBS= '2012-07-15T14:12:26' / Start date of observations
DATE-END= '2012-07-16T08:00:17' / End date of observations
TSTART  = 3.956795990000000E+08 / time start
TSTOP   = 3.957387900000000E+08 / time stop
TELAPSE = 5.919100000000000E+04 / elapsed time
ONTIME  = 2.372718530184031E+04 / On-source time
EXPOSURE= 2.372718530184031E+04 / Exposure time
MJD-OBS = 5.612362573129629E+04 / MJD of data start time
FILIN001= 'ae807065010xi0_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= 'ae807065010xi1_0_3x3n130b_cl.evt.gz' / Input file name
FILIN003= 'ae807065010xi3_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 study of the fossil group RXJ 1159+5531 does not find the gas clumping invoked to explain unexpectedly flat entropy profiles and large gas fractions near r_vir in some clusters. Instead its ICM properties at r_vir are consistent with adiabatic cluster formation, which may reflect that hydrostatic equilibrium is very accurate in this highly evolved fossil group. To examine whether these results extend to other fossils and to more massive systems, we propose to observe the fossil cluster RXJ 1416.4+2315 (M_vir ~3 x 10^14 M_sun) to constrain its entropy and gas fraction out to r_vir (r_112). Since it is located at a redshift of 0.137, this target provides an efficient means to explore the outer ICM, where a large azimuthal portion (~80%) of r_vir can be observed in a single Suzaku field.