1 / 21

Pulsar Timing & Proper Motion Studies at UO

Pulsar Timing & Proper Motion Studies at UO. Wang HuaXiang & Zhou WeiZheng. wanghx@ms.xjb.ac.cn. OutLine. Basic Idea of Pulsar Timing Proper Motion & Basic Results The Future. Basic Idea of Timing. What is TOA(Time os Arrival). Basic Idea of Timing. Standard Profile. Observe

fiona
Download Presentation

Pulsar Timing & Proper Motion Studies at UO

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Pulsar Timing&Proper Motion Studies at UO Wang HuaXiang & Zhou WeiZheng wanghx@ms.xjb.ac.cn

  2. OutLine • Basic Idea of Pulsar Timing • Proper Motion & Basic Results • The Future

  3. Basic Idea of Timing What is TOA(Time os Arrival)

  4. Basic Idea of Timing Standard Profile Observe Profile

  5. Basic Idea of Timing Profile With Mode-Change

  6. Basic Idea of Timing Possible Erros in TOAs: Short term errors Long term errors

  7. Basic Idea of Timing Residual and Fitting Phase Calculation Fitting Curve of Residual

  8. Basic Idea of Timing Pre-Fit

  9. Basic Idea of Timing Post-Fit

  10. What is PM? The total proper motion can be expressed as:

  11. What is PM ?

  12. Why PM ? • The association between Pulsar and SNR • The study on Neutron Star: initia period, ћk-c(B), birt rate et al • No consensus has been reached on the PM results • UO can make good observation and analysing

  13. How to ? 1, Velocity from Scintillation Observing

  14. How To ? 2, Measure position and its change Optical method--HST (Crab, Vela) Interferometry –VLA, VLBA, MERLIN, VLBI Pulsar Timing

  15. How To ?

  16. How To ?

  17. How To ? Something should be considered Timing Noise

  18. Basic Resuts

  19. Basic ResultsCompare with others Note: LAS: Lyne,Anderson &Salter HLA:Harrison,Lyne &Anderson Fomlant et al 1992,1997

  20. Basic Results Compare with previours results

  21. The Future ? Finish the data processing Statistics on Velocity

More Related