TEMPO2, a new pulsar-timing package - I. An overview

被引:916
作者
Hobbs, GB [1 ]
Edwards, RT [1 ]
Manchester, RN [1 ]
机构
[1] CSIRO, Australia Telescope Natl Facil, Epping, NSW 1710, Australia
关键词
methods : data analysis; ephemerides; pulsars : general;
D O I
10.1111/j.1365-2966.2006.10302.x
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
Contemporary pulsar-timing experiments have reached a sensitivity level where systematic errors introduced by existing analysis procedures are limiting the achievable science. We have developed TEMPO2, a new pulsar-timing package that contains propagation and other relevant effects implemented at the 1-ns level of precision (a factor of similar to 100 more precise than previously obtainable). In contrast with earlier timing packages, TEMPO2 is compliant with the general relativistic framework of the IAU 1991 and 2000 resolutions and hence uses the International Celestial Reference System, Barycentric Coordinate Time and up-to-date precession, nutation and polar motion models. TEMPO2 provides a generic and extensible set of tools to aid in the analysis and visualization of pulsar-timing data. We provide an overview of the timing model, its accuracy and differences relative to earlier work. We also present a new scheme for predictive use of the timing model that removes existing processing artefacts by properly modelling the frequency dependence of pulse phase.
引用
收藏
页码:655 / 672
页数:18
相关论文
共 35 条
[1]  
BACKER DC, 1986, ANNU REV ASTRON ASTR, V24, P537, DOI 10.1146/annurev.aa.24.090186.002541
[2]   TEMPORAL VARIATIONS OF PULSAR DISPERSION MEASURES [J].
BACKER, DC ;
HAMA, S ;
VANHOOK, S ;
FOSTER, RS .
ASTROPHYSICAL JOURNAL, 1993, 404 (02) :636-642
[3]  
Bell JF, 1996, ASTROPHYS J, V456, pL33, DOI 10.1086/309862
[4]   ARRIVAL-TIME ANALYSIS FOR A PULSAR IN A BINARY-SYSTEM [J].
BLANDFORD, R ;
TEUKOLSKY, SA .
ASTROPHYSICAL JOURNAL, 1976, 205 (02) :580-591
[5]   ON THE ORBITAL PERIOD CHANGE OF THE BINARY PULSAR PSR-1913+16 [J].
DAMOUR, T ;
TAYLOR, JH .
ASTROPHYSICAL JOURNAL, 1991, 366 (02) :501-511
[6]  
DAMOUR T, 1986, ANN I H POINCARE-PHY, V44, P263
[7]  
Feissel M, 1998, ASTRON ASTROPHYS, V331, pL33
[8]  
FOLKNER WM, 1994, ASTRON ASTROPHYS, V287, P279
[9]   INTERSTELLAR PROPAGATION EFFECTS AND THE PRECISION OF PULSAR TIMING [J].
FOSTER, RS ;
CORDES, JM .
ASTROPHYSICAL JOURNAL, 1990, 364 (01) :123-135
[10]   CONSTRUCTING A PULSAR TIMING ARRAY [J].
FOSTER, RS ;
BACKER, DC .
ASTROPHYSICAL JOURNAL, 1990, 361 (01) :300-308