Physics
Scientific paper
Dec 2005
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005aspc..343...64t&link_type=abstract
Astronomical Polarimetry: Current Status and Future Directions ASP Conference Series, Vol. 343, Proceedings of the Conference he
Physics
2
Scientific paper
Measurements of magnetic field strengths in the diffuse interstellar medium (ISM) of the Galaxy offer important insights into the physics of the ISM. Here we describe and interpret a new series of field strength measurements in the cold neutral medium (CNM). These measurements have been made via the Zeeman effect in Galactic HI absorption lines toward extra-galactic radio continuum sources. The data come from the Millennium Arecibo HI absorption line survey of Heiles & Troland. The results of this survey establish that the median magnetic field strength in the CNM is about 6 μG. This value is very similar to field strengths in diffuse gas up to two orders of magnitude less dense. The magnetic field in the CNM is important since its energy density is comparable to turbulent energy densities. Also, the mass-to-flux ratio in the CNM appears magnetically subcritical. If this ratio is preserved as the gas becomes self-gravitating, then the magnetic field will dominate subsequent evolution and star formation within the gas.
No associations
LandOfFree
Magnetic Field Strengths in the Cold Neutral Medium of the Galaxy does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Magnetic Field Strengths in the Cold Neutral Medium of the Galaxy, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Magnetic Field Strengths in the Cold Neutral Medium of the Galaxy will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1033669