Suzaku Observation : 406076010

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Fits Header

TELESCOP= 'SUZAKU  '           / Telescope (mission) name
OBS_ID  = '406076010'          / Observation identification string
OBSERVER= 'TIZIANA DI SALVO'   / Principal Investigator
OBJECT  = '4U 1705-44'         / Name of observed object
OBS_REM = '        '           / remark on observation
RA_OBJ  =             257.2270 / planned target R.A.(deg)
DEC_OBJ =             -44.1020 / planned target DEC.(deg)
RA_NOM  = 2.572257000000000E+02 / Right Ascension of target (deci. deg)
DEC_NOM = -4.409600000000000E+01 / Declination of target (deci. deg)
PA_NOM  =             104.9955 / nominal position angle from north to DETY(deg)
MEAN_EA1=     257.225704306335 / mean of the 1st ZYZ-Euler angle (deg)
MEAN_EA2=     134.096027225208 / mean of the 2nd ZYZ-Euler angle (deg)
MEAN_EA3=     345.004491939236 / mean of the 3rd ZYZ-Euler angle (deg)
DATE-OBS= '2012-03-27T12:46:09' / Start date of observations
DATE-END= '2012-03-30T10:09:17' / End date of observations
TSTART  = 3.861687270000000E+08 / time start
TSTOP   = 3.864173421619570E+08 / time stop
TELAPSE = 2.486151619570255E+05 / elapsed time
ONTIME  = 1.008209777005315E+05 / On-source time
EXPOSURE= 1.008209777005315E+05 / Exposure time
MJD-OBS = 5.601354619425926E+04 / MJD of data start time
FILIN001= 'ae406076010xi0_0_3x3n090l_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= 'ae406076010xi0_0_5x5n090l_cl.evt.gz' / Input file name
FILIN003= 'ae406076010xi1_0_3x3n131b_cl.evt.gz' / Input file name
FILIN004= 'ae406076010xi1_0_5x5n131b_cl.evt.gz' / Input file name
FILIN005= 'ae406076010xi3_0_3x3n092a_cl.evt.gz' / Input file name
FILIN006= 'ae406076010xi3_0_5x5n092a_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 ToO Suzaku 100-ks observation of the neutron star X-ray binary 4U 1705-44, to perform a detailed study of its broad-band (0.4-200 keV) X-ray spectrum during a hard state. XIS data will provide important information on the iron K-shell features, and the broad-band spectral capabilities of the HXD will allow to study the hard X-ray spectrum and in particular the Compton reflection bump at 20-50 keV. We plan to fit both the iron features and the reflection bump with a self-consistent model, which will allow to prove (or disprove) a disk origin of the iron line. Moreover the proposed observation will allow to study the correlation between the spectral index of the primary spectrum and the reflection amplitude, which gives important constraints on the geometry of the system.