Suzaku Observation : 500007010

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Fits Header

TELESCOP= 'SUZAKU  '           / Telescope (mission) name
OBS_ID  = '500007010'          / Observation identification string
OBSERVER= 'Suzaku SWG'         / Principal Investigator
OBJECT  = 'HESS J1804-216'     / Name of observed object
OBS_REM = '        '           / remark on observation
RA_OBJ  =             271.1713 / planned target R.A.(deg)
DEC_OBJ =             -21.6759 / planned target DEC.(deg)
RA_NOM  = 2.711693000000000E+02 / Right Ascension of target (deci. deg)
DEC_NOM = -2.167220000000000E+01 / Declination of target (deci. deg)
PA_NOM  =              89.0483 / nominal position angle from north to DETY(deg)
MEAN_EA1=     271.169257710303 / mean of the 1st ZYZ-Euler angle (deg)
MEAN_EA2=     111.672232673280 / mean of the 2nd ZYZ-Euler angle (deg)
MEAN_EA3=       0.951710046368 / mean of the 3rd ZYZ-Euler angle (deg)
DATE-OBS= '2006-04-06T14:41:18' / Start date of observations
DATE-END= '2006-04-07T11:48:23' / End date of observations
TSTART  = 1.976529390000000E+08 / time start
TSTOP   = 1.977238490000000E+08 / time stop
TELAPSE = 7.091000000000000E+04 / elapsed time
ONTIME  = 3.752221211671829E+04 / On-source time
EXPOSURE= 3.752221211671829E+04 / Exposure time
MJD-OBS = 5.383165049981482E+04 / MJD of data start time
FILIN001= 'ae500007010xi0_0_3x3n000a_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= 'ae500007010xi0_0_5x5n000a_cl.evt.gz' / Input file name
FILIN003= 'ae500007010xi1_0_3x3n001b_cl.evt.gz' / Input file name
FILIN004= 'ae500007010xi1_0_5x5n001b_cl.evt.gz' / Input file name
FILIN005= 'ae500007010xi2_0_3x3n000a_cl.evt.gz' / Input file name
FILIN006= 'ae500007010xi2_0_5x5n000a_cl.evt.gz' / Input file name
FILIN007= 'ae500007010xi3_0_3x3n000a_cl.evt.gz' / Input file name
FILIN008= 'ae500007010xi3_0_5x5n000a_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:

HESS found several new TeV sources in the Galactic Plane Survey. Possible origin would be PWN or synchrotron X-ray SNR shell. However many of these new TeV sources (their sizes are ~10 arcmin) have no counterpart in any other wavelength. They can be main contributors to the Galactic Cosmic rays. In order to reveal the nature of these fantastic objects, we propose to observe the extended sources. HESS~J1616-508 is already observed and we found this source has quite low surface brightness in X-rays compared with TeV gamma-rays, indicating this is a dark particle accelerator Here, we point out HESS~J1804-216 which has possible counterparts in other wavelengths, then it might be the missing link between known Galactic accelerators and dark particle accelerators.