Abstract
We present the results of an extensive Arecibo observational survey of magnetic field strengths in the inter-core regions of molecular clouds to determine their role in the evolution and collapse of molecular clouds as a whole. Sensitive 18 cm OH Zeeman observations of absorption lines from Galactic molecular gas in the direction of extragalactic continuum sources yielded 38 independent measurements of magnetic field strengths. Zeeman detections were achieved at the 3σ level toward nine clouds, while the others revealed sensitive upper limits to the magnetic field strength. Our results suggest that total field strengths in the inter-core regions of giant molecular clouds (GMCs) are about 15 μG.
Original language | English |
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Article number | 49 |
Journal | Astrophysical Journal |
Volume | 884 |
Issue number | 1 |
DOIs | |
State | Published - Oct 10 2019 |
Bibliographical note
Publisher Copyright:© 2019 The American Astronomical Society. All rights reserved.
ASJC Scopus subject areas
- Astronomy and Astrophysics
- Space and Planetary Science