Suzaku Observation : 401057010

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Fits Header

TELESCOP= 'SUZAKU  '           / Telescope (mission) name
OBS_ID  = '401057010'          / Observation identification string
OBSERVER= 'KATJA POTTSCHMIDT'  / Principal Investigator
OBJECT  = '4U1907+09'          / Name of observed object
OBS_REM = '        '           / remark on observation
RA_OBJ  =             287.4079 / planned target R.A.(deg)
DEC_OBJ =               9.8303 / planned target DEC.(deg)
RA_NOM  = 2.874013000000000E+02 / Right Ascension of target (deci. deg)
DEC_NOM = 9.837800000000000E+00 / Declination of target (deci. deg)
PA_NOM  =              60.2599 / nominal position angle from north to DETY(deg)
MEAN_EA1=     287.401300912519 / mean of the 1st ZYZ-Euler angle (deg)
MEAN_EA2=      80.162248860666 / mean of the 2nd ZYZ-Euler angle (deg)
MEAN_EA3=      29.740070250227 / mean of the 3rd ZYZ-Euler angle (deg)
DATE-OBS= '2006-05-02T06:11:34' / Start date of observations
DATE-END= '2006-05-03T17:34:24' / End date of observations
TSTART  = 1.998692750000000E+08 / time start
TSTOP   = 1.999928505277618E+08 / time stop
TELAPSE = 1.235755277617872E+05 / elapsed time
ONTIME  = 5.846421425479650E+04 / On-source time
EXPOSURE= 5.846421425479650E+04 / Exposure time
MJD-OBS = 5.385730253685185E+04 / MJD of data start time
FILIN001= 'ae401057010xi0_0_3x3n053a_cl.evt.gz' / Input file name
SEQPNUM =                    3 / 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= 'ae401057010xi0_0_5x5n053a_cl.evt.gz' / Input file name
FILIN003= 'ae401057010xi1_0_3x3n054b_cl.evt.gz' / Input file name
FILIN004= 'ae401057010xi1_0_5x5n054b_cl.evt.gz' / Input file name
FILIN005= 'ae401057010xi2_0_3x3n015a_cl.evt.gz' / Input file name
FILIN006= 'ae401057010xi2_0_5x5n015a_cl.evt.gz' / Input file name
FILIN007= 'ae401057010xi3_0_3x3n055a_cl.evt.gz' / Input file name
FILIN008= 'ae401057010xi3_0_5x5n055a_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 60ksec of Suzaku observations of the high mass X-ray binary 4U1907+09, to study the little known spectrum of the source below 2keV and to measure its behavior during its frequent dips, where matter ceases to accrete onto the magnetic poles of the neutron star. Making use of Suzaku's unique broad band capabilities, we will also perform pulse phase spectroscopy of the cyclotron line and study the parameters of the fundamental and first harmonic cyclotron lines, as 4U1907+09 is one of the few accreting neutron stars where two cyclotron lines lie within the energy range of the XIS and HXD-PIN detectors. The scientific aims of this proposal address questions within NASA's Goals and Research Focus Area ``Structure and Evolution of the Universe''.