Suzaku Observation : 702036020

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Fits Header

TELESCOP= 'SUZAKU  '           / Telescope (mission) name
OBS_ID  = '702036020'          / Observation identification string
OBSERVER= 'RYAN C. HICKOX'     / Principal Investigator
OBJECT  = 'LMC X-4 '           / Name of observed object
OBS_REM = '        '           / remark on observation
RA_OBJ  =              83.2075 / planned target R.A.(deg)
DEC_OBJ =             -66.3705 / planned target DEC.(deg)
RA_NOM  = 8.322100000000000E+01 / Right Ascension of target (deci. deg)
DEC_NOM = -6.635910000000000E+01 / Declination of target (deci. deg)
PA_NOM  =             284.2438 / nominal position angle from north to DETY(deg)
MEAN_EA1=      83.221010887195 / mean of the 1st ZYZ-Euler angle (deg)
MEAN_EA2=     156.359142675328 / mean of the 2nd ZYZ-Euler angle (deg)
MEAN_EA3=     165.756206404249 / mean of the 3rd ZYZ-Euler angle (deg)
DATE-OBS= '2008-04-05T13:15:26' / Start date of observations
DATE-END= '2008-04-06T07:20:24' / End date of observations
TSTART  = 2.607165620000000E+08 / time start
TSTOP   = 2.607807460000000E+08 / time stop
TELAPSE = 6.418400000000000E+04 / elapsed time
ONTIME  = 2.534244634008408E+04 / On-source time
EXPOSURE= 2.534244634008408E+04 / Exposure time
MJD-OBS = 5.456155354379630E+04 / MJD of data start time
FILIN001= 'ae702036020xi0_0_3x3n112a_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= 'ae702036020xi0_0_5x5n112a_cl.evt.gz' / Input file name
FILIN003= 'ae702036020xi1_0_3x3n114b_cl.evt.gz' / Input file name
FILIN004= 'ae702036020xi1_0_5x5n114b_cl.evt.gz' / Input file name
FILIN005= 'ae702036020xi3_0_3x3n113a_cl.evt.gz' / Input file name
FILIN006= 'ae702036020xi3_0_5x5n113a_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 a series of three 20ks observations of the binary X-ray pulsar LMC X-4. This source shows 13.5 s pulsations, a 1.4 d orbital period, and a long-period (~30 d) variability due to a warped, precessing accretion disk. The proposed analysis will use pulse-phase spectroscopy with XIS to explore changes in the X-ray pulses and spectra at three different phases in the disk precession. This work will give us a detailed picture of the accretion flow, particularly for the inner regions of the accretion disk that are illuminated by the X-rays from the neutron star. This project takes advantage of the strengths of the XIS, particularly its excellent spectral resolution, sufficient (1s) time resolution in Window mode, and wide PSF that limits pile-up effects.