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To Constrain the Parametric Space of ICS

To Constrain the Parametric Space of ICS. Cui XiaoHong Peking University. Outline. Motivation Geometry Observation ICS model Conclusion and discussion. Ratio. Motivation: constant (ratio)  test model Ratio 1 = ρ 2 / ρ 1 , ratio 2 =r 2 /r 1 Models: ICS. Geometry. P. Geometry.

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To Constrain the Parametric Space of ICS

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  1. To Constrain the Parametric Space of ICS Cui XiaoHong Peking University

  2. Outline • Motivation • Geometry • Observation • ICS model • Conclusion and discussion

  3. Ratio Motivation: constant (ratio) test model • Ratio1=ρ2/ρ1, ratio2=r2/r1 • Models: ICS

  4. Geometry P

  5. Geometry

  6. From the observation • f: α,β, Δφ ρ (LM88) • ρvarphiRer θ=θμ=ρ varphi • Ratio1=ρ2/ρ1, ratio2=r2/r1

  7. Ratio: PSR B1642-03 P=387.7ms α=68.2º β=1.1º (LM88) 1.42GHz, 4.75GHz and 10.55GHz Kramer 94

  8. RSR B0950+08 P=253ms α=5.9°, β=4.2° 1.43GHz, 4.75GHz and 10.55GHz Kramer 94

  9. Result η1= ratio1, η2= ratio2, Δη= ηmax - ηmin

  10. ICS α,β, Δφ Qiao & Lin A&A 1998

  11. PSRB1642-03

  12. PSR B0950+08

  13. Conclusion • αmight be a constant and not significantly effects ratios • To constrain the parametric space of ICS

  14. Discussion

  15. THANKS 谢 谢！

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