Suzaku Observation : 506005020

HTTP dir for public data including pipe-line products
SUZAKU MASTER for master database
UDON2 to quickly extract spectrum and light-curve
JUDO2 to show the pointing position and compare with other data

Fits Header

TELESCOP= 'SUZAKU  '           / Telescope (mission) name
OBS_ID  = '506005020'          / Observation identification string
OBSERVER= 'AYA BAMBA'          / Principal Investigator
OBJECT  = 'HB21 SOUTH'         / Name of observed object
OBS_REM = '        '           / remark on observation
RA_OBJ  =             311.2500 / planned target R.A.(deg)
DEC_OBJ =              50.5833 / planned target DEC.(deg)
RA_NOM  = 3.112245000000000E+02 / Right Ascension of target (deci. deg)
DEC_NOM = 5.058210000000000E+01 / Declination of target (deci. deg)
PA_NOM  =               6.5570 / nominal position angle from north to DETY(deg)
MEAN_EA1=     311.224517574199 / mean of the 1st ZYZ-Euler angle (deg)
MEAN_EA2=      39.417906383629 / mean of the 2nd ZYZ-Euler angle (deg)
MEAN_EA3=      83.442969078871 / mean of the 3rd ZYZ-Euler angle (deg)
DATE-OBS= '2011-07-25T21:24:49' / Start date of observations
DATE-END= '2011-07-26T11:53:21' / End date of observations
TSTART  = 3.649444260000000E+08 / time start
TSTOP   = 3.649963866705334E+08 / time stop
TELAPSE = 5.196067053341866E+04 / elapsed time
ONTIME  = 2.347668594318628E+04 / On-source time
EXPOSURE= 2.347668594318628E+04 / Exposure time
MJD-OBS = 5.576789456231481E+04 / MJD of data start time
FILIN001= 'ae506005020xi0_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= 'ae506005020xi0_0_5x5n066l_cl.evt.gz' / Input file name
FILIN003= 'ae506005020xi1_0_3x3n130b_cl.evt.gz' / Input file name
FILIN004= 'ae506005020xi1_0_5x5n130b_cl.evt.gz' / Input file name
FILIN005= 'ae506005020xi3_0_3x3n066a_cl.evt.gz' / Input file name
FILIN006= 'ae506005020xi3_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:

Over-ionization in SNRs is one of the biggest mystery Suzaku discovered. It affects a lot the study on chemical and thermal evolution of universe, but the origin is still unknown. HB21 is an old SNR with molecular cloud interaction and GeV gamma-rays, which remind us typical over-ionization SNRs. On the other hand, the interacting molecular cloud is much smaller or thinner than those interacting with over-ionization SNRs, and as a result, HB21 can be the key target to study the origin of over-ionization. Suzaku deep observation of HB21 south (interacting point) will determine the condition of plasma and judge whether it is in over-ionization or not, which will show us the origin of over-ionizing plasma.