Suzaku Observation : 100029010

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Fits Header

TELESCOP= 'SUZAKU  '           / Telescope (mission) name
OBS_ID  = '100029010'          / Observation identification string
OBSERVER= 'Suzaku SWG'         / Principal Investigator
OBJECT  = 'GRO J1655-40'       / Name of observed object
OBS_REM = '        '           / remark on observation
RA_OBJ  =             253.5000 / planned target R.A.(deg)
DEC_OBJ =             -39.8458 / planned target DEC.(deg)
RA_NOM  = 2.535027000000000E+02 / Right Ascension of target (deci. deg)
DEC_NOM = -3.984550000000000E+01 / Declination of target (deci. deg)
PA_NOM  =             268.0237 / nominal position angle from north to DETY(deg)
MEAN_EA1=     253.502665025802 / mean of the 1st ZYZ-Euler angle (deg)
MEAN_EA2=     129.845532135509 / mean of the 2nd ZYZ-Euler angle (deg)
MEAN_EA3=     181.976318052924 / mean of the 3rd ZYZ-Euler angle (deg)
DATE-OBS= '2005-09-22T07:32:15' / Start date of observations
DATE-END= '2005-09-23T07:07:24' / End date of observations
TSTART  = 1.806896720000000E+08 / time start
TSTOP   = 1.807744296714724E+08 / time stop
TELAPSE = 8.475767147237062E+04 / elapsed time
ONTIME  = 3.523359389328957E+04 / On-source time
EXPOSURE= 3.523359389328957E+04 / Exposure time
MJD-OBS = 5.363531639101852E+04 / MJD of data start time
FILIN001= 'ae100029010xi1_0_3x3n021b_cl.evt.gz' / Input file name
SEQPNUM =                    4 / 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= 'ae100029010xi2_0_2x2n022a_cl.evt.gz' / Input file name
FILIN003= 'ae100029010xi2_0_3x3n022a_cl.evt.gz' / Input file name
FILIN004= 'ae100029010xi3_0_2x2n023a_cl.evt.gz' / Input file name
FILIN005= 'ae100029010xi3_0_3x3n023a_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 to observe GRO J1655-40, a transient galactic black hole candidate. With M=~7 Msolar and distinct radio lobes, GRO J1655-40 has been classified as a microquasar. It was highly variable during the first few years after its discovery while showing irregular flaring and a wide range of continuum states. Discrete Fe K absorption structure was observed with ASCA. In the summer of 1997 it entered an extended quiescence that lasted for ~8 years. In March 2005 it became active again and XMM & Chandra have observed it since. Only Suzaku can provide the broadband sensitivity required to map the Fe K structure and the continuum as they change. GRO J1655-40 is rapidly declining and must be observed soon before it reenters quiescence.