Suzaku Observation : 505023010
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Fits Header
TELESCOP= 'SUZAKU ' / Telescope (mission) name
OBS_ID = '505023010' / Observation identification string
OBSERVER= 'HIROSHI TSUNEMI' / Principal Investigator
OBJECT = 'CYGNUS LOOP 15' / Name of observed object
OBS_REM = ' ' / remark on observation
RA_OBJ = 313.2250 / planned target R.A.(deg)
DEC_OBJ = 29.6740 / planned target DEC.(deg)
RA_NOM = 3.132124000000000E+02 / Right Ascension of target (deci. deg)
DEC_NOM = 2.968540000000000E+01 / Declination of target (deci. deg)
PA_NOM = 50.2914 / nominal position angle from north to DETY(deg)
MEAN_EA1= 313.212418517597 / mean of the 1st ZYZ-Euler angle (deg)
MEAN_EA2= 60.314605349897 / mean of the 2nd ZYZ-Euler angle (deg)
MEAN_EA3= 39.708615753109 / mean of the 3rd ZYZ-Euler angle (deg)
DATE-OBS= '2010-05-27T07:14:51' / Start date of observations
DATE-END= '2010-05-27T16:47:14' / End date of observations
TSTART = 3.282614330000000E+08 / time start
TSTOP = 3.282934050000000E+08 / time stop
TELAPSE = 3.197200000000000E+04 / elapsed time
ONTIME = 1.929534848254919E+04 / On-source time
EXPOSURE= 1.929534848254919E+04 / Exposure time
MJD-OBS = 5.534332288407407E+04 / MJD of data start time
FILIN001= 'ae505023010xi0_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= 'ae505023010xi1_0_3x3n069b_cl.evt.gz' / Input file name
FILIN003= 'ae505023010xi3_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:
The Cygnus Loop is a prototypical middle-aged SNR. Based on the previous observation, the shell shows relatively low temperature with low metal abundance and high non-uniformity in intensity. The interior shows high temperature with high abundance. It also shows the abundance non-uniformity. The inner plasma is the fossil of the progenitor star. The abundance non-uniformity indicates the asymmetric explosion. We propose to observe the rest of the Cygnus Loop for 310ks with three objectives that are tightly correlated to each other. The first is to establish the metal structure that is the key to study the asymmetric explosion. The second is to measure the amount of metal that can determine the progenitor mass. The last one is to search for a compact object such as a neutron star.