Suzaku Observation : 802052010

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Fits Header

TELESCOP= 'SUZAKU  '           / Telescope (mission) name
OBS_ID  = '802052010'          / Observation identification string
OBSERVER= 'MICHAEL LOEWENSTEIN' / Principal Investigator
OBJECT  = 'URSA MINOR'         / Name of observed object
OBS_REM = '        '           / remark on observation
RA_OBJ  =             227.2854 / planned target R.A.(deg)
DEC_OBJ =              67.2225 / planned target DEC.(deg)
RA_NOM  = 2.272517000000000E+02 / Right Ascension of target (deci. deg)
DEC_NOM = 6.723070000000000E+01 / Declination of target (deci. deg)
PA_NOM  =              40.7921 / nominal position angle from north to DETY(deg)
MEAN_EA1=     227.251660130588 / mean of the 1st ZYZ-Euler angle (deg)
MEAN_EA2=      22.769298122050 / mean of the 2nd ZYZ-Euler angle (deg)
MEAN_EA3=      49.207884628310 / mean of the 3rd ZYZ-Euler angle (deg)
DATE-OBS= '2007-04-05T18:33:24' / Start date of observations
DATE-END= '2007-04-06T18:08:14' / End date of observations
TSTART  = 2.291133520000000E+08 / time start
TSTOP   = 2.291980732837309E+08 / time stop
TELAPSE = 8.472128373086452E+04 / elapsed time
ONTIME  = 7.089028513854742E+04 / On-source time
EXPOSURE= 7.089028513854742E+04 / Exposure time
MJD-OBS = 5.419577565027778E+04 / MJD of data start time
FILIN001= 'ae802052010xi0_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= 'ae802052010xi0_0_5x5n066a_cl.evt.gz' / Input file name
FILIN003= 'ae802052010xi1_0_3x3n069b_cl.evt.gz' / Input file name
FILIN004= 'ae802052010xi1_0_5x5n069b_cl.evt.gz' / Input file name
FILIN005= 'ae802052010xi3_0_3x3n066a_cl.evt.gz' / Input file name
FILIN006= 'ae802052010xi3_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:

We propose 50 ksec Suzaku observations of the Ursa Minor and Draco dwarf spheroidal galaxies. These dense, dark-matter-dominated systems are carefully selected as the strongest potential sources of line emission from radiatively decaying keV dark matter of any astrophysical object. The low-level, stable Suzaku background makes it the most sensitive instrument to-date for this purpose. At the very least, constraints that enter a significant new regime are derived: non-detections are still of great importance. In the best case, the long sought-after identity of dark matter will be discovered, pointing the way to physics beyond the Standard Model.