Related Experiment Video
Updated: Oct 16, 2025
06:04
Simulation of the Planetary Interior Differentiation Processes in the Laboratory
Published on: November 15, 2013
11.7K
Paleomagnetic evidence for a disk substructure in the early solar system
Cauê S Borlina1, Benjamin P Weiss1, James F J Bryson2
1Department of Earth, Atmospheric and Planetary Sciences, Massachusetts Institute of Technology, Cambridge, MA, USA.
Science Advances
|October 15, 2021
Summary
Paleomagnetic study of meteorites reveals a strong magnetic field in the early solar nebula, suggesting disk substructures and significant mass loss in the outer solar system.
Area of Science:
- Planetary Science
- Astrophysics
- Geophysics
Background:
- Substructures are hypothesized to be common in protoplanetary disks and the early solar nebula.
- Meteorite studies offer insights into conditions of the early solar system.
Purpose of the Study:
- To investigate the existence and nature of disk substructures in the solar nebula.
- To determine the paleomagnetic field strength in the outer solar nebula.
Main Methods:
- Paleomagnetic measurements of chondrules from CO carbonaceous chondrites.
- Analysis of magnetic field intensity and comparison between inner and outer solar system meteorite data.
Main Results:
- Evidence for a strong magnetic field (101 ± 48 μT) in the outer solar nebula (3-7 AU).
- A significant mismatch (5-150x) in nebular accretion between inner and outer solar system reservoirs.
- Indication of substantial disk mass loss, potentially driven by a magnetized disk wind.
Conclusions:
- The findings support the presence of disk substructures in the solar nebula.
- A magnetized disk wind is a plausible mechanism for mass loss and accretion mismatch.
- This research provides crucial data on the early solar system's magnetic environment and evolution.
Related Concept Videos
01:10Kepler's First Law of Planetary Motion
4.4K
In the early 17th century, German astronomer and mathematician Johannes Kepler postulated three laws for the motion of planets in the solar system. He formulated his first two laws based on the observations of his forebears, Nikolaus Copernicus and Tycho Brahe.
Polish astronomer Nikolaus Copernicus put forth a theory that stated a heliocentric model for the solar system. According to this heliocentric theory, all the planets, including Earth, orbit the Sun in circular orbits.
On the other hand,...
Polish astronomer Nikolaus Copernicus put forth a theory that stated a heliocentric model for the solar system. According to this heliocentric theory, all the planets, including Earth, orbit the Sun in circular orbits.
On the other hand,...
4.4K
01:23Faraday Disk Dynamo
2.7K
A Faraday disk dynamo is a DC generator, producing an emf that is constant in time. It consists of a conducting disk that rotates with a constant angular velocity in the magnetic field, perpendicular to the disk's plane. The rotation of the disk causes a change in magnetic flux, which induces an emf, causing opposite charges to develop on the rim and in the center of the disk. The polarity of the induced emf can be determined by the direction of the magnetic field and the direction of the...
2.7K
01:29Kepler's Second Law of Planetary Motion
4.5K
In the early 17th century, German astronomer and mathematician Johannes Kepler postulated three laws for the motion of planets in the solar system. His first law states that all planets orbit the Sun in an elliptical orbit, with the Sun at one of the ellipse's foci. Therefore, the distance of a planet from the Sun varies throughout its revolution around the Sun.
While in an elliptical orbit, the total energy of the planet is conserved. Therefore, the planet slows down when it is at apogee and...
While in an elliptical orbit, the total energy of the planet is conserved. Therefore, the planet slows down when it is at apogee and...
4.5K
01:19Magnetic Field Lines
4.6K
The representation of magnetic fields by magnetic field lines is very useful in visualizing the strength and direction of the magnetic field. Each of the magnetic field lines forms a closed loop. The field lines emerge from the north pole (N), loop around to the south pole (S), and continue through the bar magnet back to the north pole.
Magnetic field lines follow several hard-and-fast rules:
Magnetic field lines follow several hard-and-fast rules:
4.6K
01:23Electric Field of a Charged Disk
2.7K
The simplest case of a surface charge distribution is the uniformly charged disk. Calculating its electric field also helps us calculate the electric field of a large plane of charge.
The system's symmetry is in the cylindrical directions across the plane of the charge. As a result, the electric fields created by various surface charge elements nullify each other in the direction parallel to the surface. Thereby, the resulting electric field is perpendicular to the plane. Since the disk is...
The system's symmetry is in the cylindrical directions across the plane of the charge. As a result, the electric fields created by various surface charge elements nullify each other in the direction parallel to the surface. Thereby, the resulting electric field is perpendicular to the plane. Since the disk is...
2.7K
01:18Kepler's Third Law of Planetary Motion
3.6K
In the early 17th century, German astronomer and mathematician Johannes Kepler postulated three laws for the motion of planets in the solar system. In 1909, he formulated his first two laws based on the observations of his forebears, Nikolaus Copernicus and Tycho Brahe. However, in 1918, he published his third law of planetary motion, which gives a precise mathematical relationship between a planet's average distance from the Sun and the amount of time it takes to revolve around the Sun. It...
3.6K