Line of Sight Magnetic Fields. Zeeman Effect V = L  R  (dI/d )(  Z cos  )  line of sight B Q or U  (d 2 I/d 2 )(  Z sin  ) 2  plane of sky.

Presentación del tema: "Line of Sight Magnetic Fields. Zeeman Effect V = L  R  (dI/d )(  Z cos  )  line of sight B Q or U  (d 2 I/d 2 )(  Z sin  ) 2  plane of sky."— Transcripción de la presentación:

1 Line of Sight Magnetic Fields

2

3 Zeeman Effect V = L  R  (dI/d )(  Z cos  )  line of sight B Q or U  (d 2 I/d 2 )(  Z sin  ) 2  plane of sky B (not really) (dI/d )  Z  I (  Z /  FWHM )  Z =  B  Z, Z  1 – 2 Hz/  G, (Z H I = 1.4 Hz/  G)

4 CNM component (1 of 6) I opacity profile B los = 11  3.1  G V opacity profile  dI/dv B los = 5.6  1.0  G 3C 138 Diffuse Cloud (H I Zeeman) Arecibo “Millennium” Survey

5 L1448 (OH Zeeman) B los =  28  6 µG B los =  25  5 µG

6 DR21OH (CN Zeeman) B los = 0.4, 0.7 mG

7 W3OH (excited OH, maser Zeeman) 8-11 mG

8 W3 IRS5 (H 2 O maser Zeeman)

9 B los in HI toward Trapezium

10 B los in the HV HI component

11 W 3

12 Zeeman Effect Results Species (GHz) n(protons/cm -3 B H I 1.410 1-2 3-10  G OH (~thermal) 1.610 3-4 10-100  G CN 113.510 5-6 0.3-1 mG OH (masers) 1.6, 6.0, 13.410 7-8 1-10 mG H 2 O (masers) 22.210 9-10 10-100 mG

13 Results for Field Strength

14 Results for Mass/Flux