Find period for Find period for SGR 1627-41SGR 1627-41

OutlineOutline

SGR 1627-41SGR 1627-41 RXTE(RXTE(Rossi X-ray Timing Explorer) Rossi X-ray Timing Explorer) Data Reduction and AnalysisData Reduction and Analysis ResultResult

SGR 1627-41SGR 1627-41

First observation: Ulysses on 1998 June 17

RA, DEC RA, DEC 16 35 52.00, -47 35 14.0 16 35 52.00, -47 35 14.0 J2000J2000

associate with nearby SNRassociate with nearby SNR : : SNR G337.0-SNR G337.0-0.10.1

SGR SGR first giant P(s) quiescence P(s) P’ supefirst giant P(s) quiescence P(s) P’ super-Eddingtonr-Eddingtonobserve flare? (erg/s) (10-11s/s) buobserve flare? (erg/s) (10-11s/s) burstrst

18061806

19001900

05260526

16271627

1801 1801

1979 no ?? 2*1035 7.74 2.8 1979 no ?? 2*1035 7.74 2.8 10^3X 10^3X

1979 yes 5.16 3*1034 5.16 6.1 1979 yes 5.16 3*1034 5.16 6.1 10^3X 10^3X

1979 yes 8 1036 ?? ?? 1979 yes 8 1036 ?? ?? 2*10^4X 2*10^4X

1998 no ?? 1035 ?? ?? 1998 no ?? 1035 ?? ?? 4*10^5X 4*10^5X 1997 no ?? ?? ?? ?? 1997 no ?? ?? ?? ?? ?? ??

HEARSARC BrowseHEARSARC BrowseSearch Results :Search Results :

Target id max status start time end time num ober PI LTarget id max status start time end time num ober PI Lname name 70137-03 accepted 1 WOODS 70137-03 accepted 1 WOODS 80149-03 accepted 1 WOODS 80149-03 accepted 1 WOODS 80150-02 accepted 1 IBRAHI80150-02 accepted 1 IBRAHIM M 50145-01 archived 2001-08-10 2001-08-11 3 IBR50145-01 archived 2001-08-10 2001-08-11 3 IBRAHIM AHIM 15:25:55.2 02:09:48.1 15:25:55.2 02:09:48.1

RXTERXTE

RXTE(RXTE(Rossi X-ray Timing Explorer) Rossi X-ray Timing Explorer) Launch date: Dec. 30, 1995 Launch date: Dec. 30, 1995 Delta II rocket Delta II rocket Orbit: low-earth orbit Orbit: low-earth orbit

(about 600 km and 23 deg inclinatio (about 600 km and 23 deg inclination) n)

Weight: 3,045 kgWeight: 3,045 kg The RXTE is maneuverable (6 deg/minutThe RXTE is maneuverable (6 deg/minut

e) e)

Instrument Instrument

PCA (Proportional Counter Array) PCA (Proportional Counter Array) HEXTE HEXTE

(The High Energy X-ray Timing (The High Energy X-ray Timing Experiment) Experiment)

ASM (All-Sky Monitor) ASM (All-Sky Monitor) EDS (Experiment Data System) EDS (Experiment Data System)

PCA PCA The PCA is an array of five proportional counters with a totThe PCA is an array of five proportional counters with a tot

al collecting area of 6500 square cm. The instrumental propal collecting area of 6500 square cm. The instrumental properties are: erties are:

Energy range: 2 - 60 keV Energy range: 2 - 60 keV Energy resolution: < 18% at 6 keV Energy resolution: < 18% at 6 keV Time resolution: 1 microsec Time resolution: 1 microsec Spatial resolution: collimator with 1 degree FWHM Spatial resolution: collimator with 1 degree FWHM Detectors: 5 proportional counters Detectors: 5 proportional counters Collecting area: 6500 square cm Collecting area: 6500 square cm Layers: 1 Propane veto; 3 Xenon, each split into two; 1 Xenon vLayers: 1 Propane veto; 3 Xenon, each split into two; 1 Xenon v

eto layer eto layer Sensitivity: 0.1 mCrab Sensitivity: 0.1 mCrab Background: 2 mCrab Background: 2 mCrab Events detected by the PCA will be processed on board by the Events detected by the PCA will be processed on board by the

EDSEDS before insertion into the telemetry stream before insertion into the telemetry stream

Download DataDownload Data [50145-01][50145-01] [50145-01-00-00][50145-01-00-00] [50145-01-00-00A][50145-01-00-00A] [50145-01-00-00Z][50145-01-00-00Z] [50145-01-00-01][50145-01-00-01] [50145-01-00-010][50145-01-00-010] [50145-01-00-01A][50145-01-00-01A] [50145-01-00-01Z][50145-01-00-01Z] [50145-01-00-02][50145-01-00-02] [50145-01-00-02A][50145-01-00-02A] [50145-01-00-02Z][50145-01-00-02Z]

[50145-01-00-02][50145-01-00-02] 3.944k sec3.944k sec 637k events637k events

Data reductionData reduction

Use XDF to find your Event-mode datUse XDF to find your Event-mode datafilesafiles

Convert GoodXenon1&2 into FITSConvert GoodXenon1&2 into FITS Examine the filter fileExamine the filter file Create a bitmaskCreate a bitmask Extract a light curveExtract a light curve Correct for deadtimeCorrect for deadtime

Use XDF to find your Event-modUse XDF to find your Event-mode datafilese datafiles

>XDF>XDF>put GoodXenon1_xx, GoodXenon2_xx>put GoodXenon1_xx, GoodXenon2_xx>make file list>make file list==>fits_files.xdf==>fits_files.xdf

Convert GoodXenon1&2 Convert GoodXenon1&2 into FITSinto FITS

>make_se>make_se>fits_files.xdf>fits_files.xdf==>event_gx0==>event_gx0

Examine the filter fileExamine the filter file

PCUn_ONPCUn_ON NUM_PCU_ONNUM_PCU_ON ELVELV OFFSETOFFSET TIME_SINCE_SAATIME_SINCE_SAA ELECTRONnELECTRONn

Create a bitmaskCreate a bitmask

>sefilter>sefilterM-token [M[1]{1}]>M-token [M[1]{1}]>E[VPR]>nE[VPR]>nD[0:4]{3}>nD[0:4]{3}>nE[0:63]{6}>1,2E[0:63]{6}>1,2 ==>event_gx0.bit, event_gx0.fits==>event_gx0.bit, event_gx0.fits

Extract a light curveExtract a light curve

Correct for deadtimeCorrect for deadtime the dead time per event is approximatethe dead time per event is approximate

ly 10 microseconds for good xenon, prly 10 microseconds for good xenon, propane and coincident events opane and coincident events

=> it need not to do deadtime correction, => it need not to do deadtime correction, when count rates << 10^5 when count rates << 10^5 count/seccount/sec

Data AnalysisData Analysis

>faxbary>faxbary

>powspec>powspecNewbin Time or negative Rebinning>-Newbin Time or negative Rebinning>-

NNNumber of Newbins/Interval>N1Number of Newbins/Interval>N1Number of Interval/Frame>N2Number of Interval/Frame>N2Rebin Results? (>1 Const rebin, <-1 geoRebin Results? (>1 Const rebin, <-1 geo

m. rebin, 0 none)>m. rebin, 0 none)>

>efsearch>efsearchperiod>period>Phasebins/Period>Phasebins/Period>Number of Newbins/Interval>INDEFNumber of Newbins/Interval>INDEFResolution for period search>0.00001Resolution for period search>0.00001Number of Periods to search>Number of Periods to search>

PowspecPowspec Newbin Time>-100 Newbin Time>-100 # of Newbins/Interval>6553# of Newbins/Interval>65536 6 # of Interval/Frame>521# of Interval/Frame>521Rebin >0Rebin >0PLT>error onPLT>error on

PowspecPowspec Newbin Time>-100 Newbin Time>-100 # of Newbins/Interval>6553# of Newbins/Interval>65536 6 # of Interval/Frame>521# of Interval/Frame>521Rebin >0Rebin >0PLT>error offPLT>error off

PowspecPowspec Newbin Time>-100 Newbin Time>-100 # of Newbins/Interval>6553# of Newbins/Interval>65536 6 # of Interval/Frame>521# of Interval/Frame>521Rebin >-1.01Rebin >-1.01PLT>error onPLT>error on

PowspecPowspec Newbin Time>-1000000 Newbin Time>-1000000# of Newbins/Interval>409# of Newbins/Interval>4096 6 # of Interval/Frame>1# of Interval/Frame>1Rebin >0Rebin >0PLT>error onPLT>error on

PowspecPowspec Newbin Time>-1000000 Newbin Time>-1000000 # of Newbins/Interval>4096 # of Newbins/Interval>4096

# of Interval/Frame>1# of Interval/Frame>1Rebin >0Rebin >0PLT>error offPLT>error off

PowspecPowspec Newbin Time>-1000000 Newbin Time>-1000000 # of Newbins/Interval>4096 # of Newbins/Interval>4096

# of Interval/Frame>1# of Interval/Frame>1Rebin >0Rebin >0PLT>error onPLT>error on

PowspecPowspec Newbin Time>-1000000 Newbin Time>-1000000 # of Newbins/Interval>4096 # of Newbins/Interval>4096

# of Interval/Frame>1# of Interval/Frame>1Rebin >0Rebin >0PLT>error offPLT>error off

PowspecPowspec Newbin Time>-1000000 Newbin Time>-1000000 # of Newbins/Interval>512# of Newbins/Interval>512# of Interval/Frame>7# of Interval/Frame>7Rebin >0Rebin >0PLT>error onPLT>error on

PowspecPowspec Newbin Time>-1000000 Newbin Time>-1000000 # of Newbins/Interval>512 # of Newbins/Interval>512 # of Interval/Frame>7# of Interval/Frame>7Rebin >0Rebin >0PLT>error offPLT>error off

PowspecPowspec Newbin Time>-100 Newbin Time>-100 # of Newbins/Interval>512 # of Newbins/Interval>512 # of Interval/Frame>7# of Interval/Frame>7Rebin >0Rebin >0PLT>error offPLT>error off

EfsearchEfsearchperiod>12.84period>12.84Phasebins/Period>20Phasebins/Period>20# of Newbins/Interval>INDE# of Newbins/Interval>INDEFFResolution >0.00001Resolution >0.00001# of Periods to search>1000# of Periods to search>1000