Suzaku Observation : 706005010

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Fits Header

TELESCOP= 'SUZAKU  '           / Telescope (mission) name
OBS_ID  = '706005010'          / Observation identification string
OBSERVER= 'JUN KATAOKA'        / Principal Investigator
OBJECT  = 'NGC6251_LOBE_BGD2'  / Name of observed object
OBS_REM = '        '           / remark on observation
RA_OBJ  =             245.4460 / planned target R.A.(deg)
DEC_OBJ =              82.3530 / planned target DEC.(deg)
RA_NOM  = 2.452973000000000E+02 / Right Ascension of target (deci. deg)
DEC_NOM = 8.235860000000000E+01 / Declination of target (deci. deg)
PA_NOM  =              26.9772 / nominal position angle from north to DETY(deg)
MEAN_EA1=     245.297346996302 / mean of the 1st ZYZ-Euler angle (deg)
MEAN_EA2=       7.641430653127 / mean of the 2nd ZYZ-Euler angle (deg)
MEAN_EA3=      63.022772710608 / mean of the 3rd ZYZ-Euler angle (deg)
DATE-OBS= '2011-04-16T10:25:32' / Start date of observations
DATE-END= '2011-04-16T19:45:15' / End date of observations
TSTART  = 3.562647420877547E+08 / time start
TSTOP   = 3.562943877062390E+08 / time stop
TELAPSE = 2.964561848431826E+04 / elapsed time
ONTIME  = 1.202631871187687E+04 / On-source time
EXPOSURE= 1.202631871187687E+04 / Exposure time
MJD-OBS = 5.566743525777494E+04 / MJD of data start time
FILIN001= 'ae706005010xi0_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= 'ae706005010xi1_0_3x3n069b_cl.evt.gz' / Input file name
FILIN003= 'ae706005010xi3_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:

We propose a Suzaku observation of "Gamma-ray lobe" accociated with a FR-I/II radio galaxy NGC6251. This is the second discovery next to Cen-A lobe with Fermi-LAT above 100 MeV. Compared to huge angular extent of Cen-A (~10 degree), the lobe of NGC 6251 is comfortably fit within an XIS-FOV, but its physical size is almost the same as Cen-A(~Mpc). We can therefore estimate the total power accumulated in lobe with much less uncertainties, and pressure balance between non-thermal electrons and external thermal cluster medium, that may reveal possible contributions of hidden protons in the lobe. We propose a 40 ksec observation of NGC 6251 centered on the NW-lobe, with additional 20 ksec x 2 observations at "OFF-src" positions to improve the background estimate.