TEMPO2tutorialGeorgeHobbs（饺子),ResearchScientistCSiRO Australia Telescope National Facility,InternationalYoungScientistofNTSCgeorge.hobbs@csiro.auCSIRO
TEMPO2 tutorial George Hobbs (饺子), Research Scientist CSIRO Australia Telescope National Facility, International Young Scientist of NTSC george.hobbs@csiro.au
Content.TEMPO2isasoftwarepackage.Itimplements“pulsartimingalgorithms·Section1:WhatTEMPO2hasbeenusedfor.OverviewofTEMPO2·Section2:HowtouseTEMPO2·Section3:HowtodevelopTEMPO2MajorTEMPO2developers(softwareandalgorithms):G.Hobbs,R.EdwardsR. Manchester, W. Coles, X. You, M. Keith, F. Jenet, D. Yardley, J. Verbiest,
Content • TEMPO2 is a software package. It implements “pulsar timing” algorithms. • Section 1: What TEMPO2 has been used for. Overview of TEMPO2 • Section 2: How to use TEMPO2 • Section 3: How to develop TEMPO2 • Major TEMPO2 developers (software and algorithms): G. Hobbs, R. Edwards, R. Manchester, W. Coles, X. You, M. Keith, F. Jenet, D. Yardley, J. Verbiest,
Whathas tempo2been usedforin2010/2011?Searching for gravitational wave signals (e.g., Yardley et al. 2011Yardleyet al.2010,Abbott et al.2010,vanHaasteren et al.2010): Using pulsars as navigational aids (Ruggiero 2011). Statistical analysis of timing residuals (e.g., Na, X. S. et al., 2011,Hobbs et al.2010).Studyingemission geometry (e.g., Noutsos et al.,2011): Searching for gamma-ray pulsars (Ray et al., 2010):Determiningpulsarmasses(Demorestetal.2010).Studyingpulsationsfrommain-sequencestars(Ravietal.2010):Tests of relativity (Weisberg et al.2010).MeasuringJupiter'smass(Championetal.2010). Observations of glitches (Chukwude et al.2010):Analysis of accreting millisecond X-ray pulsar (Patruno et al.2010):Relativistic spin precession (Manchester et al.2010)
What has tempo2 been used for in 2010/2011? • Searching for gravitational wave signals (e.g., Yardley et al. 2011, Yardley et al. 2010, Abbott et al. 2010, van Haasteren et al. 2010) • Using pulsars as navigational aids (Ruggiero 2011) • Statistical analysis of timing residuals (e.g., Na, X. S. et al., 2011, Hobbs et al. 2010) • Studying emission geometry (e.g., Noutsos et al., 2011) • Searching for gamma-ray pulsars (Ray et al., 2010) • Determining pulsar masses (Demorest et al. 2010) • Studying pulsations from main-sequence stars (Ravi et al. 2010) • Tests of relativity (Weisberg et al. 2010) • Measuring Jupiter’s mass (Champion et al. 2010) • Observations of glitches (Chukwude et al. 2010) • Analysis of accreting millisecond X-ray pulsar (Patruno et al. 2010) • Relativistic spin precession (Manchester et al. 2010)
Whatdoestempo2 do?· USAGE 1:·Startwithfileofpulsearrivaltimes·Startwith model of apulsar's spin,astrometric and orbitalparameters->pulsartimingresiduals·USAGE2:·Startwithpulsartimingmodel->predictthepulsephaseandfrequencyatagivenobservatoryatagiventime
What does tempo2 do? • USAGE 1: • Start with file of pulse arrival times • Start with model of a pulsar’s spin, astrometric and orbital parameters • -> pulsar timing residuals • USAGE 2: • Start with pulsar timing model -> predict the pulse phase and frequency at a given observatory at a given time
Aparameterfile (par)PSRJJ0613-020011RAJ06:13:43.9750585DECJ-02:00:47.172381FO326.60056219017465751F11-1.0228669646983851338e-15Pulsarname,PEPOCH53114POSEPOCH53114astrometric,DMEP0CH53114rotational,DM38.779100000000000001Fit for thisPMRA11.7864748030585594928dispersion1PMDEC-10.27023682503168075parameter?measure andPX20.91177639168598902443BINARYDDorbitalPB11.1985125752330855253parametersTO153113.947671230393077A111.0914444592811573305OM145.4514571363451052931ECC5.293385830438794e-06START53431.313924448706732FINISH55619.299962597727951Realisation ofterrestrialtimeTZRMJD54526.290614015242458TZRFRO1373.0139999999998963TZRSITE7Solar system5EPHVERephemerisCLKTT(TAI)Weighted fit?EPHEMDE4141MODECSIRO
A parameter file (.par) Pulsar name, astrometric, rotational, dispersion measure and orbital parameters Realisation of terrestrial time Solar system ephemeris Weighted fit? Fit for this parameter?