Suzaku Observation : 406009010

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Fits Header

TELESCOP= 'SUZAKU  '           / Telescope (mission) name
OBS_ID  = '406009010'          / Observation identification string
OBSERVER= 'KEI SAITOU'         / Principal Investigator
OBJECT  = 'VW HYI  '           / Name of observed object
OBS_REM = '        '           / remark on observation
RA_OBJ  =              62.2975 / planned target R.A.(deg)
DEC_OBJ =             -71.2948 / planned target DEC.(deg)
RA_NOM  = 6.228330000000000E+01 / Right Ascension of target (deci. deg)
DEC_NOM = -7.129010000000000E+01 / Declination of target (deci. deg)
PA_NOM  =             181.9815 / nominal position angle from north to DETY(deg)
MEAN_EA1=      62.283286855652 / mean of the 1st ZYZ-Euler angle (deg)
MEAN_EA2=     161.290097421479 / mean of the 2nd ZYZ-Euler angle (deg)
MEAN_EA3=     268.018527615518 / mean of the 3rd ZYZ-Euler angle (deg)
DATE-OBS= '2011-11-29T02:24:39' / Start date of observations
DATE-END= '2011-11-30T04:22:20' / End date of observations
TSTART  = 3.758488580000000E+08 / time start
TSTOP   = 3.759421212859334E+08 / time stop
TELAPSE = 9.326328593343496E+04 / elapsed time
ONTIME  = 7.009140639638901E+04 / On-source time
EXPOSURE= 7.009140639638901E+04 / Exposure time
MJD-OBS = 5.589410326601852E+04 / MJD of data start time
FILIN001= 'ae406009010xi0_0_3x3n066q_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= 'ae406009010xi0_0_5x5n066q_cl.evt.gz' / Input file name
FILIN003= 'ae406009010xi1_0_3x3n130b_cl.evt.gz' / Input file name
FILIN004= 'ae406009010xi1_0_5x5n130b_cl.evt.gz' / Input file name
FILIN005= 'ae406009010xi3_0_3x3n066c_cl.evt.gz' / Input file name
FILIN006= 'ae406009010xi3_0_5x5n066c_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:

SU UMa type dwarf novae, which are a subclass of cataclysmic variables, sometimes exhibit outburst and superoutburst. It is supposed that the superoutburst is caused by a tidal instability when a disk reachs 3:1 resonance radius. This is related with a mass accretion rate onto white dwarf. Recently, Suzaku observed dwarf nova SS Cyg in its quiescence and outburst, and reveals a plasma structure of a boundary layer in these states, while a plasma structure in superoutburst has been unknown yet. We propose ToO observations of SU UMa star VW Hyi in one superoutburst and three quiescence states proceeded by normal outburst to investigate plasma geometry in superoutburst and a temporal growth of mass accretion rate.