Suzaku Observation : 505057010

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Fits Header

TELESCOP= 'SUZAKU  '           / Telescope (mission) name
OBS_ID  = '505057010'          / Observation identification string
OBSERVER= 'YOH TAKEI'          / Principal Investigator
OBJECT  = 'VICINITY_4U1957+11' / Name of observed object
OBS_REM = '        '           / remark on observation
RA_OBJ  =             300.5900 / planned target R.A.(deg)
DEC_OBJ =              12.1400 / planned target DEC.(deg)
RA_NOM  = 3.005977000000000E+02 / Right Ascension of target (deci. deg)
DEC_NOM = 1.213070000000000E+01 / Declination of target (deci. deg)
PA_NOM  =             252.1551 / nominal position angle from north to DETY(deg)
MEAN_EA1=     300.597686945634 / mean of the 1st ZYZ-Euler angle (deg)
MEAN_EA2=      77.869282378892 / mean of the 2nd ZYZ-Euler angle (deg)
MEAN_EA3=     197.844914496110 / mean of the 3rd ZYZ-Euler angle (deg)
DATE-OBS= '2010-10-30T15:03:41' / Start date of observations
DATE-END= '2010-11-01T19:50:15' / End date of observations
TSTART  = 3.417687990000000E+08 / time start
TSTOP   = 3.419544210000000E+08 / time stop
TELAPSE = 1.856220000000000E+05 / elapsed time
ONTIME  = 8.058384879267216E+04 / On-source time
EXPOSURE= 8.058384879267216E+04 / Exposure time
MJD-OBS = 5.549965813870370E+04 / MJD of data start time
FILIN001= 'ae505057010xi0_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= 'ae505057010xi0_0_5x5n066l_cl.evt.gz' / Input file name
FILIN003= 'ae505057010xi1_0_3x3n069b_cl.evt.gz' / Input file name
FILIN004= 'ae505057010xi1_0_5x5n069b_cl.evt.gz' / Input file name
FILIN005= 'ae505057010xi3_0_3x3n066a_cl.evt.gz' / Input file name
FILIN006= 'ae505057010xi3_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:

We propose for an observation of the vicinity of 4U 1957+11, in order to study the Galactic low-latitude hot gas. Recently, detection of OVII and NeIX aborption lines was reported in the spectrum of 4U 1957+11 (Yao et al. 2008). By combining a Suzaku observation of diffuse hot plasma around the object with the reported absorption line equivalnet widths, we will constrain the temperature, line-of-sight length, density of the hot plasma of the direction. Not only to understand the Galactic gas, but also to understand feedback mechanism from a galaxy to the intergalactic space will our study play an important role.