Suzaku Observation : 708003010

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Fits Header

TELESCOP= 'SUZAKU  '           / Telescope (mission) name
OBS_ID  = '708003010'          / Observation identification string
OBSERVER= 'POSHAK GANDHI'      / Principal Investigator
OBJECT  = 'NGC 4785'           / Name of observed object
OBS_REM = '        '           / remark on observation
RA_OBJ  =             193.3638 / planned target R.A.(deg)
DEC_OBJ =             -48.7492 / planned target DEC.(deg)
RA_NOM  = 1.933693000000000E+02 / Right Ascension of target (deci. deg)
DEC_NOM = -4.874600000000000E+01 / Declination of target (deci. deg)
PA_NOM  =             296.8629 / nominal position angle from north to DETY(deg)
MEAN_EA1=     193.369295893840 / mean of the 1st ZYZ-Euler angle (deg)
MEAN_EA2=     138.745957454665 / mean of the 2nd ZYZ-Euler angle (deg)
MEAN_EA3=     153.137102471737 / mean of the 3rd ZYZ-Euler angle (deg)
DATE-OBS= '2013-07-22T11:26:27' / Start date of observations
DATE-END= '2013-07-23T15:13:13' / End date of observations
TSTART  = 4.278081100000000E+08 / time start
TSTOP   = 4.279075752079911E+08 / time stop
TELAPSE = 9.946520799106359E+04 / elapsed time
ONTIME  = 7.939620089799166E+04 / On-source time
EXPOSURE= 7.939620089799166E+04 / Exposure time
MJD-OBS = 5.649548349750000E+04 / MJD of data start time
FILIN001= 'ae708003010xi0_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= 'ae708003010xi0_0_5x5n066l_cl.evt.gz' / Input file name
FILIN003= 'ae708003010xi1_0_3x3n130b_cl.evt.gz' / Input file name
FILIN004= 'ae708003010xi1_0_5x5n130b_cl.evt.gz' / Input file name
FILIN005= 'ae708003010xi3_0_3x3n066a_cl.evt.gz' / Input file name
FILIN006= 'ae708003010xi3_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:

At faint fluxes, the Swift/BAT AGN survey is uncovering sources with very hard photon indices (Gamma) above 10 keV. The origin of a low Gamma in the hard band is ill-understood, but may include high/atypical obscuration, non-thermal X-rays without radio jets, or electron coronae with high temperatures or optical depths. In AO7, we observed two such Seyfert 2s and discovered Compton-thick obscuration in one source, and a buried AGN spectrum with no reflection or high-energy cutoff in the other. The hard BAT Gamma values thus have a variety of origins, and our strategy is very effective in selecting objects with interesting spectra. Here, we propose to observe two hardest sources (Gamma<~1) with no prior X-ray observations below 10 keV in order to shed light on the nature of this population.