1 / 14

Line of Sight Magnetic Fields

Line of Sight Magnetic Fields. Zeeman Effect.  Z = B  Z, Z  1 – 2 Hz/G, (Z H I = 1.4 Hz/G). 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 ). Diffuse Cloud (H I Zeeman).

eron
Download Presentation

Line of Sight Magnetic Fields

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. Line of Sight Magnetic Fields

  2. Zeeman Effect Z = B Z, Z  1 – 2 Hz/G, (ZH I = 1.4 Hz/G) V = LR  (dI/d)(Zcos)  line of sight B Q or U  (d2I/d2)(Zsin)2  plane of sky B (not really) (dI/d)Z  I (Z/ FWHM)

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

  4. L1448 (OH Zeeman) Blos=28 6 µG Blos=25 5 µG

  5. DR21OH (CN Zeeman) Blos = 0.4, 0.7 mG

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

  7. W3 IRS5 (H2O maser Zeeman)

  8. Blos in HI toward Trapezium

  9. Blos in the HV HI component

  10. W 3

  11. Zeeman Effect Results Species  (GHz) n(protons/cm-3 B H I 1.4 101-2 3-10 G OH (~thermal) 1.6 103-4 10-100 G CN 113.5 105-60.3-1 mG OH (masers) 1.6, 6.0, 13.4 107-8 1-10 mG H2O (masers) 22.2 109-10 10-100 mG

  12. Results for Field Strength

  13. Results for Mass/Flux

More Related