Suzaku Observation : 704055010

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Fits Header

TELESCOP= 'SUZAKU  '           / Telescope (mission) name
OBS_ID  = '704055010'          / Observation identification string
OBSERVER= 'JAMES N. REEVES'    / Principal Investigator
OBJECT  = 'MR 2251-178'        / Name of observed object
OBS_REM = '        '           / remark on observation
RA_OBJ  =             343.5245 / planned target R.A.(deg)
DEC_OBJ =             -17.5820 / planned target DEC.(deg)
RA_NOM  = 3.435217000000000E+02 / Right Ascension of target (deci. deg)
DEC_NOM = -1.758140000000000E+01 / Declination of target (deci. deg)
PA_NOM  =              63.4108 / nominal position angle from north to DETY(deg)
MEAN_EA1=     343.521689376249 / mean of the 1st ZYZ-Euler angle (deg)
MEAN_EA2=     107.581435585895 / mean of the 2nd ZYZ-Euler angle (deg)
MEAN_EA3=      26.589184042756 / mean of the 3rd ZYZ-Euler angle (deg)
DATE-OBS= '2009-05-07T03:28:24' / Start date of observations
DATE-END= '2009-05-10T11:13:14' / End date of observations
TSTART  = 2.949821363702618E+08 / time start
TSTOP   = 2.952691780753226E+08 / time stop
TELAPSE = 2.870417050607204E+05 / elapsed time
ONTIME  = 1.369399620549083E+05 / On-source time
EXPOSURE= 1.369399620549083E+05 / Exposure time
MJD-OBS = 5.495814583974840E+04 / MJD of data start time
FILIN001= 'ae704055010xi0_0_3x3n066a_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= 'ae704055010xi0_0_5x5n066a_cl.evt.gz' / Input file name
FILIN003= 'ae704055010xi1_0_3x3n069b_cl.evt.gz' / Input file name
FILIN004= 'ae704055010xi1_0_5x5n069b_cl.evt.gz' / Input file name
FILIN005= 'ae704055010xi3_0_3x3n066a_cl.evt.gz' / Input file name
FILIN006= 'ae704055010xi3_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:

The bright, nearby (z=0.06398) QSO MR 2251-178 was the first AGN where a warm absorber was detected. There are now thought to be at least two warm absorber components in MR 2251-178; a low ionisation soft X-ray absorber and a putative high velocity (13000 km/s) high ionisation wind, which exhibits absorption lines in the iron K-shell band. We propose a 130 ks observation with Suzaku of MR 2251-178 with the primary goals; (i) to establish the nature of the high ionisation absorber, e.g. an accretion disk wind, through unprecedented high S/N observations in the iron K band with XIS; (ii) to determine the physical parameters of the soft X-ray warm absorber and (iii) to characterise the ionised reflection component and high-energy cut-off thanks to the high energy sensitivity of the HXD.