Observations of the properties of dense molecular clouds are critical in understanding the process of star-formation. One of the most important, but least understood, is the role of the magnetic fields. We discuss the possibility of using high-resolution, high-sensitivity radio observations to measure the in-situ synchrotron radiation from these molecular clouds. If the cosmic-ray (CR) particles penetrate clouds as expected, then we can measure the B-field strength directly using radio data. So far, this signature has never been detected from the collapsing clouds themselves and would be a unique probe of the magnetic field. Dense cores are typically âˆ¼ 0.05 pc in size, corresponding to âˆ¼arcsec at âˆ¼kpc distances, and flux density estimates are âˆ¼ mJy at 1 GHz. They should be detectable, for example with the Square Kilometre Array.
|Proceedings of Science
|Published - 1 Jan 2014
|2014 Cosmic Rays and the InterStellar Medium, CRISM 2014 - Montpellier, France
Duration: 24 Jun 2014 → 27 Jun 2014