Suzaku Observation : 701028020

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Fits Header

TELESCOP= 'SUZAKU  '           / Telescope (mission) name
OBS_ID  = '701028020'          / Observation identification string
OBSERVER= 'ALBERT KONG'        / Principal Investigator
OBJECT  = 'BO 375  '           / Name of observed object
OBS_REM = '        '           / remark on observation
RA_OBJ  =              11.4400 / planned target R.A.(deg)
DEC_OBJ =              41.6617 / planned target DEC.(deg)
RA_NOM  = 1.144970000000000E+01 / Right Ascension of target (deci. deg)
DEC_NOM = 4.165560000000000E+01 / Declination of target (deci. deg)
PA_NOM  =             231.6187 / nominal position angle from north to DETY(deg)
MEAN_EA1=      11.449718203903 / mean of the 1st ZYZ-Euler angle (deg)
MEAN_EA2=      48.344442683842 / mean of the 2nd ZYZ-Euler angle (deg)
MEAN_EA3=     218.381333086639 / mean of the 3rd ZYZ-Euler angle (deg)
DATE-OBS= '2007-02-06T14:38:31' / Start date of observations
DATE-END= '2007-02-06T23:22:14' / End date of observations
TSTART  = 2.240880140000000E+08 / time start
TSTOP   = 2.241172490000000E+08 / time stop
TELAPSE = 2.923500000000000E+04 / elapsed time
ONTIME  = 1.553707694986463E+04 / On-source time
EXPOSURE= 1.553707694986463E+04 / Exposure time
MJD-OBS = 5.413761201601852E+04 / MJD of data start time
FILIN001= 'ae701028020xi0_0_3x3n090a_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= 'ae701028020xi1_0_3x3n091b_cl.evt.gz' / Input file name
FILIN003= 'ae701028020xi3_0_3x3n092a_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:

There are over 400 very luminous (Lx > 1e38-1e40 erg/s) globular cluster X-ray sources in nearby galaxies. None are present in our Galaxy, and their nature is unknown. They may be accreting black holes, however, this is quite controversial and it is contrary to theoretical expectations. The distance is too large to make accurate studies of any of them that could reveal their nature. Luckily, there is one such very luminous source, Bo 375, in a globular cluster in M31. We propose to perform ten 10 ksec Suzaku observations of Bo 375. We expect that from the long-term lightcurve, broad-band energy spectra, and power spectra, we will be able to determine the nature of this object and thereby possibly the nature of the many very luminous globular cluster X-ray sources in nearby galaxies.