This review examines observations of magnetic fields in molecular clouds and what those
observations tell us about the theory of molecular cloud evolution and star formation. First …

The magnetic field is a key ingredient in the recipe of star formation. However, the
importance of the magnetic field in the early stages of the formation of low-and high-mass …

In this chapter we review recent advances in understanding the roles that magnetic fields
play throughout the star formation process, gained through observations and simulations of …

We report high-angular-resolution measurements of polarized dust emission toward the low-
mass protostellar system NGC 1333 IRAS 4A. We show that in this system the observed …

The mechanisms causing millimeter-wave polarization in protoplanetary disks are under
debate. To disentangle the polarization mechanisms, we observe the protoplanetary disk …

We describe a method for determining the dispersion of magnetic field vectors about large-
scale fields in turbulent molecular clouds. The method is designed to avoid inaccurate …

We measured the linear polarization of Sagittarius A* to be 7.2%±0.6% at 230 GHz using the
BIMA array with a resolution of 3 &farcs; 6× 0 &farcs; 9. This confirms the previously reported …

We have mapped linearly polarized dust emission from L183 with the James Clerk Maxwell
Telescope SCUBA polarimeter and have analyzed these and our previously published data …

We present high angular resolution 1.3 mm and 850 μm dust continuum data obtained with
the Submillimeter Array toward 33 Class 0 protostars in nearby clouds (distance< 500 pc) …

Stars generally form faster than the ambipolar diffusion time, suggesting that several
processes short-circuit the delay and promote a rapid collapse. These processes are …