Suzaku Observation : 508042010

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Fits Header

TELESCOP= 'SUZAKU  '           / Telescope (mission) name
OBS_ID  = '508042010'          / Observation identification string
OBSERVER= 'KOJI MORI'          / Principal Investigator
OBJECT  = 'VELA PWN W1'        / Name of observed object
OBS_REM = '        '           / remark on observation
RA_OBJ  =             128.3400 / planned target R.A.(deg)
DEC_OBJ =             -45.2000 / planned target DEC.(deg)
RA_NOM  = 1.283503000000000E+02 / Right Ascension of target (deci. deg)
DEC_NOM = -4.519120000000000E+01 / Declination of target (deci. deg)
PA_NOM  =             303.5014 / nominal position angle from north to DETY(deg)
MEAN_EA1=     128.350274393719 / mean of the 1st ZYZ-Euler angle (deg)
MEAN_EA2=     135.191245715283 / mean of the 2nd ZYZ-Euler angle (deg)
MEAN_EA3=     146.498567202973 / mean of the 3rd ZYZ-Euler angle (deg)
DATE-OBS= '2013-05-26T14:48:24' / Start date of observations
DATE-END= '2013-05-27T00:49:19' / End date of observations
TSTART  = 4.228982510000000E+08 / time start
TSTOP   = 4.229309445404015E+08 / time stop
TELAPSE = 3.269354040145874E+04 / elapsed time
ONTIME  = 1.412515393954515E+04 / On-source time
EXPOSURE= 1.412515393954515E+04 / Exposure time
MJD-OBS = 5.643865642574074E+04 / MJD of data start time
FILIN001= 'ae508042010xi0_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= 'ae508042010xi1_0_3x3n130b_cl.evt.gz' / Input file name
FILIN003= 'ae508042010xi3_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 have recently revealed that the X-ray extent of the Vela pulsar wind nebula (PWN) is larger than the radio extent, suggesting that the Vela PWN consists of two distinct populations: one is a bright, well-known component defining the radio boundary and the other is faint, newly-discovered one defining the X-ray boundary. We here propose a mapping observation in the western direction. Our immediate objective is to investigate how much extended the Vela PWN is in the west where the thermal pressure is significantly lower than that in the other directions we observed so far. The comparison of the X-ray extent in different directions with different environmental conditions will provide key information of origin of the faint, newly-discovered component. The GeV PWN is also covered.