SIMPLE = T / file does conform to FITS standard BITPIX = 16 / number of bits per data pixel NAXIS = 0 / number of data axes EXTEND = T / FITS dataset may contain extensions COMMENT FITS (Flexible Image Transport System) format is defined in 'AstronomyCOMMENT and Astrophysics', volume 376, page 359; bibcode: 2001A&A...376..359H HDUNAME = 'PRIMARY ' / ASCDM block name LONGSTRN= 'OGIP 1.0' / The HEASARC Long String Convention may be used.COMMENT This FITS file may contain long string keyword values that are COMMENT continued over multiple keywords. The HEASARC convention uses the & COMMENT character at the end of each substring which is then continued COMMENT on the next keyword which has the name CONTINUE. ORIGIN = 'ASC ' / Source of FITS file CREATOR = 'mkarf v0.6.2-0' / Program creating this file MJD_OBS = 5.5389462239661E+04 / Modified Julian date of observation DS_IDENT= 'ADS/Sa.CXO#obs/11554' / dataset identifier CHECKSUM= 'kAC4m4B2k9B2k9B2' / HDU checksum updated 2011-07-21T15:11:39 DATASUM = ' ' / data unit checksum updated 2011-07-21T15:11:33 DATE = '2011-07-21T15:11:39' / Date and time of file creation DATE-OBS= '2010-07-12T11:05:37' / Observation start date DATE-END= '2010-07-12T15:20:29' / Observation end date TIMESYS = 'TT ' / Time system MJDREF = 5.0814000000000E+04 / MJD zero point for times TIMEZERO= 0.0000000000000E+00 / Clock correction TIMEUNIT= 's ' / Time unit CLOCKAPP= T / default DETNAM = 'ACIS-7 ' / ACIS-S3 FILTER = ' ' GRATING = 'NONE ' CYCLE = 'P ' / events from which exps? Prim/Second/Both SIM_X = -6.8282252473119E-01 / [mm] SIM offset SIM_Y = 0.0000000000000E+00 / [mm] SIM offset SIM_Z = -1.9014258036517E+02 / [mm] SIM offset TSTART = 3.9531993750667E+08 / Observation start time TSTOP = 3.9533522999496E+08 / Observation end time MISSION = 'AXAF ' / Mission TELESCOP= 'CHANDRA ' / Telescope Used INSTRUME= 'ACIS ' / Instrument OBS_ID = '11554 ' / Observation id OBI_NUM = 0 / Obi number SEQ_NUM = '702140 ' / Sequence number END XTENSION= 'BINTABLE' / binary table extension BITPIX = 8 / 8-bit bytes NAXIS = 2 / 2-dimensional binary table NAXIS1 = 12 / width of table in bytes NAXIS2 = 1070 / number of rows in table PCOUNT = 0 / size of special data area GCOUNT = 1 / one data group (required keyword) TFIELDS = 3 / number of fields in each row EXTNAME = 'SPECRESP' / Imaging ARF HDUNAME = 'SPECRESP' / ASCDM block name CONTENT = 'SPECRESP' HDUVERS = '1.1.0 ' HDUCLASS= 'OGIP ' HDUCLAS1= 'RESPONSE' HDUCLAS2= 'SPECRESP' HDUVERS1= '1.0.0 ' / Obsolete Keyword HDUVERS2= '1.1.0 ' / Obsolete Keyword ARFVERSN= '1992a ' / Obsolete Keyword TTYPE1 = 'ENERG_LO' / Energy TFORM1 = '1E ' / format of field TUNIT1 = 'keV ' TLMIN1 = 0.0000000E+00 TLMAX1 = 2.0000000E+01 TTYPE2 = 'ENERG_HI' / Effective Area TFORM2 = '1E ' / format of field TUNIT2 = 'keV ' TLMIN2 = 0.0000000E+00 TLMAX2 = 2.0000000E+01 TTYPE3 = 'SPECRESP' / Effective Area TFORM3 = '1E ' / format of field TUNIT3 = 'cm**2 ' LONGSTRN= 'OGIP 1.0' / The HEASARC Long String Convention may be used.COMMENT This FITS file may contain long string keyword values that are COMMENT continued over multiple keywords. The HEASARC convention uses the & COMMENT character at the end of each substring which is then continued COMMENT on the next keyword which has the name CONTINUE. ORIGIN = 'ASC ' / Source of FITS file CREATOR = 'mkarf v0.6.2-0' / Program creating this file ASCDSVER= 'CIAO 4.3' / ASCDS version number MJD_OBS = 5.5389462239661E+04 / Modified Julian date of observation DS_IDENT= 'ADS/Sa.CXO#obs/11554' / dataset identifier REVISION= 1 / Processing version of data CHECKSUM= '9me4Bjb29jb2Ajb2' / HDU checksum updated 2011-07-21T15:11:39 DATASUM = '1091913099' / data unit checksum updated 2011-07-21T15:11:39 RAND_SKY= 5.0000000000000E-01 RAND_PI = 0.0000000000000E+00 EQUINOX = 2.0000000000000E+03 / default DATE = '2011-07-21T15:11:39' / Date and time of file creation DATE-OBS= '2010-07-12T11:05:37' / Observation start date OBS_MODE= 'POINTING' / Observation mode DATE-END= '2010-07-12T15:20:29' / Observation end date TIMESYS = 'TT ' / Time system MJDREF = 5.0814000000000E+04 / MJD zero point for times TIMEZERO= 0.0000000000000E+00 / Clock correction TIMEUNIT= 's ' / Time unit BTIMNULL= 3.9080955853930E+08 / Basic Time offset (s) DATACLAS= 'OBSERVED' / default BTIMRATE= 2.5625001302145E-01 / Basic Time clock rate (s / VCDUcount) BTIMDRFT= 4.3932630489267E-18 / Basic Time clock drift (s / VCDUcount^2) FILTER = 'NONE ' / QE includes all filters RESPFILE= '0.3:11.0:0.01' / RMF File ASPFILE = '../../acisf11554/products/aux/asphist_7.fits.gz' / Aspect Histogram FBTIMCORR= 0.0000000000000E+00 / Correction applied to Basic Time rate (s) TIMEREF = 'LOCAL ' / Time reference (barycenter/local) TASSIGN = 'SATELLITE' / Time assigned by clock CLOCKAPP= T / default SIM_X = -6.8282252473119E-01 / [mm] SIM offset SIM_Y = 0.0000000000000E+00 / [mm] SIM offset SIM_Z = -1.9014258036517E+02 / [mm] SIM offset FOC_LEN = 1.0070000000000E+04 / HRMA focal length (mm) TIERRELA= 1.0000000000000E-09 / default TIERABSO= 5.0000000000000E-05 / default TIMVERSN= 'ASC-FITS-2' / Timing system definition TSTART = 3.9531993750667E+08 / Observation start time GRATING = 'NONE ' / Grating DETNAM = 'ACIS-7 ' / ACIS-S3 RA_PNT = 1.6663935761085E+02 / Pointing RA DEC_PNT = -1.8361574297002E+01 / Pointing Dec ROLL_PNT= 2.3575024234657E+02 / Pointing Roll RA_TARG = 1.6663958300000E+02 / Observer's specified target RA DEC_TARG= -1.8356722000000E+01 / Observer's specified target Dec DEFOCUS = 1.4449365687057E-03 / SIM defocus (mm) RA_NOM = 1.6663935761085E+02 / Nominal RA DEC_NOM = -1.8361574297002E+01 / Nominal Dec ROLL_NOM= 2.3575024234657E+02 / Nominal Roll TSTOP = 3.9533522999496E+08 / Observation end time STARTMJF= 6449 / Major frame ctr value at start of data STARTMNF= 107 / Start minor frame ctr at start of data STARTOBT= 0.0000000000000E+00 / On-Board MET close to STARTMJF and STARTMNF STOPMJF = 6876 / Major frame ctr value at stop of data STOPMNF = 39 / Stop minor frame ctr at end of data TIMEPIXR= 5.0000000000000E-01 / default TIMEDEL = 1.7410400000000E+00 / timedel Lev1 (in seconds) CTI_CORR= T CTI_APP = 'PPPPPBPBPP' MISSION = 'AXAF ' / Mission TELESCOP= 'CHANDRA ' / Telescope Used INSTRUME= 'ACIS ' / Instrument READMODE= 'TIMED ' / Read mode FRACEXPO= 9.4705140738849E-01 / Effective fractional exposure DATAMODE= 'VFAINT ' / Data mode FLSHTIME= 0.0000000000000E+00 / Inferred duration of each flush. (s) CYCLE = 'P ' / events from which exps? Prim/Second/Both TITLE = 'The Size of Quasar Non-Thermal/X-ray Emission Regions' / Proposal titOBSERVER= 'Dr. Christopher Kochanek' / Principal investigator OBJECT = 'HE1104-1805' / Source name OBS_ID = '11554 ' / Observation id OBI_NUM = 0 / Obi number SEQ_NUM = '702140 ' / Sequence number ONTIME = 1.3065808151841E+04 / [s] Sum of GTIs ONTIME7 = 1.3065808151841E+04 / [s] Sum of GTIs LIVETIME= 1.2757819382742E+04 / [s] Livetime LIVTIME7= 1.2757819382742E+04 / [s] Livetime EXPOSURE= 1.2757622618467E+04 / [secs] Total exposure time EXPOSUR7= 1.2757819382742E+04 / [s] Exposure time DTCOR = 9.7642788218536E-01 / Dead time correction ASPTYPE = 'KALMAN ' FP_TEMP = 1.5344601440000E+02 / [K] Focal Plane Temperature RADESYS = 'ICRS ' / default HISTORY ----------------------------------------------------------------- HISTORY MKARF Processing History HISTORY ----------------------------------------------------------------- HISTORY Startup Directory: /xassist/data/pipeline4/chandra/11554/acisf11554/prodHISTORY ucts HISTORY Cmd Line: mkarf @@/tmp/tmpXYdemr.par mode=hl HISTORY Parameter file used: /tmp/tmpXYdemr.par HISTORY Detector Mask File: ../../acisf11554/data/aux/acisf11554_000N001_msk1.fiHISTORY ts.gz HISTORY Source SKY position: (3744.44,4545.85) HISTORY ---------------------------------------------------------------------- HISTORY ARDLIB History Records HISTORY ---------------------------------------------------------------------- HISTORY ARDLIB Version: 0.8.5 HISTORY File used for CALDB info: ../../acisf11554/products/events/fullrun_ccd7_HISTORY acisf11554_pi14-548_pass1_cl_src5_src.evt.gz HISTORY Parameter file: /opt/ciao-4.3/param/ardlib.par HISTORY ACIS QE File: /opt/ciao-4.3/CALDB/data/chandra/acis/qe/acisD1997-04-17qeHISTORY N0006.fits[8] HISTORY ACIS Uniformity File: /opt/ciao-4.3/CALDB/data/chandra/acis/qeu/acisD200HISTORY 0-01-29qeuN0006.fits[8] HISTORY ACIS Contamination File: /opt/ciao-4.3/CALDB/data/chandra/acis/contam/acHISTORY isD1999-08-13contamN0006.fits[8] HISTORY ACIS 7 Badpix File: /opt/ciao-4.3/CALDB/data/chandra/acis/badpix/acisD20HISTORY 00-11-28badpixN0003.fits[8] HISTORY Vignetting File: /opt/ciao-4.3/CALDB/data/chandra/default/vignet/hrmaD19HISTORY 96-12-20vignetN0003.fits[1] HISTNUM = 22 HISTORY Onaxis Area File: /opt/ciao-4.3/CALDB/data/chandra/default/axeffa/hrmaD1HISTORY 996-12-20axeffaN0008.fits[1] HISTORY ---------------------------------------------------------------------- HISTORY ---------------------------------------------------------------------- HISTORY PIXLIB History Records HISTORY ---------------------------------------------------------------------- HISTORY PIXLIB Version: 4.0.0 HISTORY ****** PIXLIB Parameter File ***** HISTORY /opt/ciao-4.3/param/geom.par: HISTORY instruments = /opt/ciao-4.3/CALDB/data/chandra/default/geom/telD1999-07HISTORY -23geomN0006.fits(CALDB) HISTORY aimpoints = /opt/ciao-4.3/CALDB/data/chandra/default/aimpts/telD1999-HISTORY 07-23aimptsN0002.fits(CALDB) HISTORY tdet = /opt/ciao-4.3/CALDB/data/chandra/default/tdet/telD1999-07HISTORY -23tdetN0001.fits(CALDB) HISTORY sky = /opt/ciao-4.3/CALDB/data/chandra/default/sky/telD1999-07-HISTORY 23skyN0002.fits(CALDB) HISTORY shell = /opt/ciao-4.3/CALDB/data/chandra/default/sgeom/telD1999-0HISTORY 7-23sgeomN0001.fits(CALDB) HISTORY obsfile = nowT00:00:00() HISTORY ****** PIXLIB System Configuration ****** HISTORY Telescope = AXAF HISTORY Focal Length (mm) = 10070.000 HISTORY Detector = ACIS HISTORY Focal Plane Sys. = FP-1.1 HISTORY Tiled Detector Plane Sys. = ACIS-2.2 HISTORY SIM Offset (mm) = (0.684 0.75 236.552) HISTORY Aim Point(NONE) (mm) = (-0.682823 0 -190.143) HISTORY Grating Arm = HEG HISTORY Grating Order = 1 HISTORY Dispersion Plane Sys. = ASC-GDP-1.1 HISTORY Rowland Circle (mm) = 8632.48 HISTORY ---------------------------------------------------------------------- HISTORY TOOL :mkarf 2011-07-21T15:11:39 ASC00001HISTORY PARM :asphistfile=../../acisf11554/products/aux/asphist_7.fitsASC00002HISTORY CONT :.gz ASC00003HISTORY PARM :outfile=../../acisf11554/products/spectra/fullrun_ccd7_aASC00004HISTORY CONT :cisf11554_pi14-548_pass1_cl_src5.arf ASC00005HISTORY PARM :sourcepixelx=3744.4435 ASC00006HISTORY PARM :sourcepixely=4545.8535 ASC00007HISTORY PARM :engrid=0.3:11.0:0.01 ASC00008HISTORY PARM :obsfile=../../acisf11554/products/events/fullrun_ccd7_acASC00009HISTORY CONT :isf11554_pi14-548_pass1_cl_src5_src.evt.gz ASC00010HISTORY PARM :pbkfile=../../acisf11554/data/aux/acisf395321186N001_pbkASC00011HISTORY CONT :0.fits.gz ASC00012HISTORY PARM :dafile=CALDB ASC00013HISTORY PARM :mirror=HRMA ASC00014HISTORY PARM :detsubsys=ACIS-S3 ASC00015HISTORY PARM :grating=NONE ASC00016HISTORY PARM :maskfile=../../acisf11554/data/aux/acisf11554_000N001_msASC00017HISTORY CONT :k1.fits.gz ASC00018HISTORY PARM :ardlibparfile=ardlib.par ASC00019HISTORY PARM :geompar=geom ASC00020HISTORY PARM :verbose=0 ASC00021HISTORY PARM :clobber=yes ASC00022END >>R?}>R> @YU> >Al,>>{ADI>{>33Ay>33>QAG>Q>pA!>p>\A>\>ǮA>Ǯ>B>>B¦>> =B"> =>(BCo>(>GB`Y>G>ffByf>ff>B8b>>B>>Ba>>HB>H?B??\Bڜ?\?B??C$?? =qBI? =q? BT? ?\)Bޮ?\)?Bny??zCE?z? =C? =?C\??(C!ǀ?(?RC*` ?R?!GC3?!G?# C= ?# ?&ffCF?&ff?(CP?(?+CYa?+?.{Ccp?.{?0Ck?0?333CLg>?333?5Cg?5?8QCsY?8Q?:HCzoR?:H?=pC6?=p?@Cn?@?B\C?B\?EC?E?GC1?G?J=qC?J=q?LC?L?O\)CS?O\)?QC2v?Q?TzC8?Tz?W =C?W =?YCx?Y?\(C?\(?^RC?^R?aGC.?aG?c C¿?c ?fffCkG?fff?hC%?h?kC)?k?n{C?n{?pC /?p?s33CM?s33?uCi?u?xQCz\?xQ?zHCw?zH?}pCPF?}p?C I??GC?G?\C?\? CC? ?C??ffC?ff?C0??Cf??=qC?=q?C}??D,??{D\?{?\)D;?\)?DV ??D^??33Dd?33?zDj?z?Dah?? =D 8? =?QD D?Q?D ??HD W?H?(D \?(?pD r?p?RD ϳ?R?D??GD+&?G?\D-?\? DjV? ?D??ffD?ff?D??D ??=qD ?=q?D??D??{D?{?\)D ?\)?Dw??D)$??33D?33?zD?z?DP?? =D? =?QDn?Q?D_??HD?H?(D?(?pD>?p?RD?R?D??GD?G?\DCH?\? D? ?D??ffD?ff?ǮD7?Ǯ?Dr??=qD?=q?˅D ?˅?D%??{D ?{?\)D W?\)?УD g?У?D @??33D @ff@ =C@ =@C{]@@QCy@Q@C @@ C@ @ =qC@ =q@ HC)@ H@ Ck@ @ (Ci@ (@ C_ @ @ pCT@ p@{C}@{@RCu@R@\)C@\)@C@@C @@GC6J@G@C@@\C@\@33Ckr@33@ C@ @zCe@z@C9@@CW@@ffC.@ff@ =C@ =@C~^@@QCKl@Q@C 0@@C@@=qCa@=q@HC^@H@Ce@@(C;@(@C\@@pCċ@p@{Cz@{@RCü@R@\)C"h@\)@ C@ @ C@ @!GC@!G@!C@!@"\Ccw@"\@#33C@#33@# CM&@# @$zC7@$z@%C@%@%C4@%@&ffC@&ff@' =C@' =@'C0@'@(QC7@(Q@(CD@(@)CU@)@*=qCJ@*=q@*HC9@*H@+C@+@,(CDF@,(@,C@,@-pCM@-p@.{C8@.{@.RC@.R@/\)C@/\)@0C@0@0C|@0@1GC @1G@1Ca@1@2\C0@2\@333C@333@3 C@3 @4zC@4z@5C@5@5C!@5@6ffC@6ff@7 =C@7 =@7C@7@8QCk@8Q@8Cj@8@9C>@9@:=qCi@:=q@:HC(@:H@;C6@;@<(C%@<(@{C@>{@>RCo@>R@?\)C@?\)@@C]@@@@C٤@@@AGC)@AG@AC@A@B\C@B\@C33C@C33@C C6@C @DzC?0@Dz@ECTd@E@ECm@E@FffC@Fff@G =C@G =@GC@G@HQC@HQ@HC@H@ICT@I@J=qCY0@J=q@JHCv@JH@KCd@K@L(C@L(@LC޳@L@MpC>@Mp@N{C2@N{@NRC`@NR@O\)C%@O\)@PCN@P@PC @P@QGC@QG@QCL@Q@R\C&@R\@S33C@S33@S C@S @TzC@Tz@UC(@U@UC2)@U@VffCv.@Vff@W =CD@W =@WC k@W@XQCV@XQ@XCc@X@YCp@Y@Z=qCs@Z=q@ZHC-@ZH@[C@[@\(C@\(@\C@\@]pC+@]p@^{C@^{@^RC@^R@_\)C9@_\)@`CU@`@`Cp3@`@aGC@aG@aCN@a@b\C@b\@c33C@c33@c C@c @dzC@dz@eC@e@eCB@e@fffCΟ@fff@g =C'@g =@gC@g@hQC@hQ@hC @h@iC@i@j=qC@j=q@jHCW@jH@kC@k@l(C@l(@lC@l@mpC@mp@n{C@n{@nRCݷ@nR@o\)C@o\)@pC@p@pC@p@qGCJ@qG@qCs@q@r\Ce}@r\@s33CW@s33@s CA@s @tzC%!@tz@uC@u@uC @u@vffC@vff@w =C@w =@wC1@w@xQC@xQ@xCj@x@yC @y@z=qCg@z=q@zHCJ=@zH@{C,x@{@|(C+@|(@|C+2@|@}pC*@}p@~{C*@~{@~RC*@~R@\)C%@\)@C i@@QC!@Q@C)@@C1@@GC@G@C*@@C @@=qCWD@=q@\C*@\@HCp@H@33Ce@33@C@@ C]@ @(C-Y@(@zC@z@C@@Cz@@pCB@p@C @@{C@{@ffC@ff@RC^@R@ =C|@ =@\)C@\)@C@@@Ca@@QC"f@Q@C@@C@@GC[+@G@Cw@@CV@@=qC@=q@\CAU@\@HC@H@33C(@33@Ca@@ C@ @(C@(@zCT@z@C @@CY@@pCS@p@C@@{C@{@ffCM@ff@RC@R@ =CW@ =@\)C#@\)@C@@CvE@@QC@Q@CG@@CY@@GCo@G@C@@C2@@=qC@=q@\CF@\@HCڄ@H@33Cn`@33@C@@ Cw@ @(C@(@zC@z@C@@C@@pCY@p@C2@@{C"@{@ffC@ff@RC>+@R@ =C(@ =@\)C>[@\)@C#@@CL @@QCΪ@Q@CL@@C2@@GCN@G@C@@CL@@=qC@=q@\C+@\@HC@H@33C*8@@pC=G]@p@CH@@GBKQ@G@BIe@@BG@@=qBF@=q@\BDb@\@HBBel@H@33B@7@33@B>Ka@@ B<@ @(B:@(@zB9F@z@B75@@B5_@@pB4l@p@B2}@@{B1B@{@ffB/@ff@RB. @R@ =B,(@ =@\)B*@\)@B)@@B(@@QB& @Q@B%$@@B#@@GB"N@G@B 2@@B)4@@=qB@=q@\B/@\@HB>@H@33B@33@Bk@@ BH~@ @(B@(@zB=@z@B@@Bp@@pB;G@p@B@@{Bڒ@{@ffB v@ff@RB @R@ =B r@ =@\)B W@\)@B +E@ABAA(BaA(AQBGAQAzBëAzABAABAAB\AAB;AAGAAGApAfApAAAAARAAAiAA{AA{A=qAԜA=qAffAAffA\A9A\ARAXARAHAuAHA =A#A =A33AA33A\)AA\)AABAAATgAA AA AA&AA(AߏA(AQAAQAzAc{AzAA>AAAقWAAACAAA֟*AAGA.AGApAӚaApAAAAAЉAAAkAA{Aͳ@A{A=qA@A=qAffA(AffA\A^A\ARA;ARAHA},AHA =A!FA =A33AA33A\)AjA\)AA AAAAA AdA AAZAA(AA(AQAAQAzA3AzAANAAAAAAsAA AU@A A GA!WA GA pAxA pA AA A A:A A A2A A {AA {A =qAA =qA ffAA ffA \A\A \A RA'A RA HABA HA =AA =A 33AA 33A \)AKoA \)A A CA A AʾA A AA A AhA A (A5bA (A QAA QA zAA zA AA A AgA A A4NA A AA A GAoA GA pAEA pA AYA A A'A A AA A{AִA{A=qAFA=qAffATAffA\AgA\ARAARAHAAHA =AA =A33AA33A\)AvA\)AAFAAAuAA AA AAaAA(A~A(AQA|AQAzAy)AzAAwOAAAuqAAAr(AAAp٦AAGAnAGApAlYApAAiAAAgAAAeQAA{Ac A{A=qA`A=qAffA^AffA\A\A\ARAZARAHAXl8AHA =AVHA =A33AT.A33A\)AR$A\)AAP$gAAAN'`AA AK A AAIAA(AGA(AQAE5AQAzACAzAAA5AAA?AAA=KAAA;^AAGA9ߑAGApA8sApAA6$AAA4F}AAA2fqAA{A0A{A=qA.A=qAffA,AffA\A+ A\ARA)'ARAHA'FWAHA =A%kA =A33A#A33A\)A!A\)AAݡAAAAA A;A AAvAA(AA(AQA|A'A' ?A' A(?A(A((?A((A(Q?lA(QA(z?n]A(zA(?cA(A(?A(A(?fA(A)?A)A)G?ڪA)GA)p?ĝA)pA)?]A)A)?A)A)?{ҧA)A*{?r/1A*{A*=q?jA*=qA*ff?aA*ffA*\?Z+1A*\A*R?RA*RA*H?K~A*HA+ =?E0-A+ =A+33?>A+33A+\)?8A+\)A+?3WA+A+?-A+A+ ?([A+ A,?"A,A,(??A,(A,Q?!mA,QA,z?A,zA,?A,A,? A,A,? iA,A-?A-A-G?A-GA-p>MA-pA-> A-A->A-A->F"A-A.{>A.{A.=q>_A.=qA.ff>2QA.ffA.\>.A.\A.R>SA.RA.H>~"A.HA/ =>_A/ =A/33>A/33A/\)>A/\)A/>aA/A/>ЉA/A/ >[A/ A0>