History of the solar nebula from meteorite paleomagnetism
Abstract
We review recent advances in our understanding of magnetism in the solar nebula and protoplanetary disks (PPDs). We discuss the implications of theory, meteorite measurements, and astronomical observations for planetary formation and nebular evolution. Paleomagnetic measurements indicate the presence of fields of 0.54 ± 0.21 G at ~1 to 3 astronomical units (AU) from the Sun and ≥0.06 G at 3 to 7 AU until >1.22 and >2.51 million years (Ma) after solar system formation, respectively. These intensities are consistent with those predicted to enable typical astronomically observed protostellar accretion rates of ~10-8 M⊙ year-1, suggesting that magnetism played a central role in mass transport in PPDs. Paleomagnetic studies also indicate fields <0.006 G and <0.003 G in the inner and outer solar system by 3.94 and 4.89 Ma, respectively, consistent with the nebular gas having dispersed by this time. This is similar to the observed lifetimes of extrasolar protoplanetary disks.", "comments": "Mainly to add the abstract, and include it to the astronomy and geophysics collection. The paper does not contain keywords, but I just added a few to make it more easily searchable if this is allowed.
- Publication:
-
Science Advances
- Pub Date:
- January 2021
- DOI:
- 10.1126/sciadv.aba5967
- arXiv:
- arXiv:2103.02011
- Bibcode:
- 2021SciA....7.5967W
- Keywords:
-
- Solar nebular;
- Protoplanetary disk;
- Accretion;
- Magnetic fields;
- Paleomagnetism;
- Astrophysics - Earth and Planetary Astrophysics;
- Astrophysics - Solar and Stellar Astrophysics
- E-Print:
- Revised version published in Science Advances