Suzaku Observation : 708015010

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Fits Header

TELESCOP= 'SUZAKU  '           / Telescope (mission) name
OBS_ID  = '708015010'          / Observation identification string
OBSERVER= 'DOMINIC WALTON'     / Principal Investigator
OBJECT  = 'HOLMBERG II X-1'    / Name of observed object
OBS_REM = '        '           / remark on observation
RA_OBJ  =             124.8708 / planned target R.A.(deg)
DEC_OBJ =              70.7054 / planned target DEC.(deg)
RA_NOM  = 1.248874000000000E+02 / Right Ascension of target (deci. deg)
DEC_NOM = 7.071620000000000E+01 / Declination of target (deci. deg)
PA_NOM  =             127.9069 / nominal position angle from north to DETY(deg)
MEAN_EA1=     124.887362232463 / mean of the 1st ZYZ-Euler angle (deg)
MEAN_EA2=      19.283761685927 / mean of the 2nd ZYZ-Euler angle (deg)
MEAN_EA3=     322.093060595585 / mean of the 3rd ZYZ-Euler angle (deg)
DATE-OBS= '2013-09-17T04:41:26' / Start date of observations
DATE-END= '2013-09-18T07:11:10' / End date of observations
TSTART  = 4.327111775188693E+08 / time start
TSTOP   = 4.328031490000000E+08 / time stop
TELAPSE = 9.197148113065958E+04 / elapsed time
ONTIME  = 5.219006464320421E+04 / On-source time
EXPOSURE= 5.219006464320421E+04 / Exposure time
MJD-OBS = 5.655223196415358E+04 / MJD of data start time
FILIN001= 'ae708015010xi0_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= 'ae708015010xi0_0_5x5n066l_cl.evt.gz' / Input file name
FILIN003= 'ae708015010xi1_0_3x3n130b_cl.evt.gz' / Input file name
FILIN004= 'ae708015010xi1_0_5x5n130b_cl.evt.gz' / Input file name
FILIN005= 'ae708015010xi3_0_3x3n066a_cl.evt.gz' / Input file name
FILIN006= 'ae708015010xi3_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:

Recent X-ray observations have produced evidence that a subset of the most extreme ultra-luminous X-ray sources (ULXs) are either intermediate-mass black holes or stellar-mass binaries in an unusual super-Eddington state. Current data are unable to deliver a clear answer, as attempts to model the 0.5-10keV spectra have been plagued by degeneracies resulting from the limited bandpass, owing to the previous lack of focusing hard X-ray telescopes. Combined, Suzaku and NuSTAR will obtain high-quality spectra covering 0.5-30keV, providing powerful probes for understanding the accretion modes and nature of the central BHs. A definitive statement on the existence of either 100-1000Msun black holes or extreme accretion states will be an important legacy of both missions.