Suzaku Observation : 804052010

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Fits Header

TELESCOP= 'SUZAKU  '           / Telescope (mission) name
OBS_ID  = '804052010'          / Observation identification string
OBSERVER= 'JOEL N BREGMAN'     / Principal Investigator
OBJECT  = 'NGC741MOSAICE_P1'   / Name of observed object
OBS_REM = '        '           / remark on observation
RA_OBJ  =              29.8033 / planned target R.A.(deg)
DEC_OBJ =               5.6150 / planned target DEC.(deg)
RA_NOM  = 2.971990000000000E+01 / Right Ascension of target (deci. deg)
DEC_NOM = 5.461000000000000E+00 / Declination of target (deci. deg)
PA_NOM  =              71.7248 / nominal position angle from north to DETY(deg)
MEAN_EA1=      29.719864256323 / mean of the 1st ZYZ-Euler angle (deg)
MEAN_EA2=      84.539027695275 / mean of the 2nd ZYZ-Euler angle (deg)
MEAN_EA3=      18.275183358514 / mean of the 3rd ZYZ-Euler angle (deg)
DATE-OBS= '2009-08-10T20:14:28' / Start date of observations
DATE-END= '2009-08-11T02:00:13' / End date of observations
TSTART  = 3.032504736141080E+08 / time start
TSTOP   = 3.032700370000000E+08 / time stop
TELAPSE = 1.956338589203358E+04 / elapsed time
ONTIME  = 1.083809548205137E+04 / On-source time
EXPOSURE= 1.083809548205137E+04 / Exposure time
MJD-OBS = 5.505384418747810E+04 / MJD of data start time
FILIN001= 'ae804052010xi0_0_3x3n066l_cl.evt.gz' / Input file name
SEQPNUM =                    2 / Number of times this dataset processed
PROCVER = '3.0.22.43'          / Processing script version
MK1STVER= 'mk1stfits20120530'  / Version of mk1stfits used
SOFTVER = 'Hea_08Feb2016_V6.18_Suzaku_14Nov2013_V22' / Version of HEADAS used
CALDBVER= 'hxd20110913_xis20151005_xrt20110630_xrs20060410' / Version of CALDB u
FILIN002= 'ae804052010xi0_0_5x5n066l_cl.evt.gz' / Input file name
FILIN003= 'ae804052010xi1_0_3x3n069b_cl.evt.gz' / Input file name
FILIN004= 'ae804052010xi1_0_5x5n069b_cl.evt.gz' / Input file name
FILIN005= 'ae804052010xi3_0_3x3n066a_cl.evt.gz' / Input file name
FILIN006= 'ae804052010xi3_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:

Galaxies have a baryon fraction only 1/3 of the cosmological value, so powerful galactic winds must have driven the gas out. In galaxy groups, the sites of most galaxies, the baryon fraction is also 1/3-1/2 of the cosmological value within half the virial radius, so the gas has been pushed further outward, probably from the heating of the same galactic superwinds. Studies with other telescopes do not go beyond half of the virial radius due to background limitations. With Suzaku, we can observe to the virial radius by using the low background XIS and choosing a galaxy group in a region of low Galactic XRB. We will discover whether the missing baryons reside in the outer parts of the group or if they have been expelled beyond the virial radius.