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MMS Spacecraft Provides First Views of Elusive Energy Explosion


Scientists Provide First Views of Elusive Energy Explosion

Artist's depiction of the MMS spacecraft, providing the first view of magnetic reconnection. Credit: NASA / GSFC

Researchers at the University of New Hampshire have a singular event that is difficult to observe in the magnetic field of the earth's magneto text related to manyetik magnetic reconnection lar (a collision process where the sparse particles and energy around the world create a rapid but powerful explosion). seized roads behind the planet.

Magnetic reattachment remains a mystery to scientists. They knew it existed and documented the impact that the explosion of energy could have – sparking and possibly causing damage to the power networks in the case of extremely large events – but they did not fully understand the details. In a study published in the journal Science, scientists summarize the initial insights of critical details of how this energy transformation process works in the magnetosphere of the Earth.

First Energy Explosion

In its second phase, NASA's Magnetospheric Multiscale Mission (MMS) monitors the magnetic re-bonding of motion in the back of the world, as the mixed blue and red magnetic field lines show. Credits: Patricia Reiff / NASA Goddard / Joy Ng

Asymmetric Reconnection

In the rest of the world, magnetic reconnection is asymmetric – that is to say, unevenly, in different directions, flows particles such as ions and electrons. In this simulation, the particles mainly move upwardly away from the reconnection point through the black magnetic field lines. Credits: Paul Cassak / NASA Goddard / Joy Ng

Olarak This was an important event, olarak said Roy Torbert of the UNH Space Science Center and ’This was an important event yardım as NASA's Magnetospheric Multiscale mission or as vice president of MMS. Bir We know for a long time that it emerged in two types of regimes: asymmetric and symmetrical, but we saw this symmetrical process for the first time. “

Magnetic re-bonding occurs around the Earth every day due to twisting and reconnecting of magnetic field lines. Different effects occur in different ways in different places. Particles in highly ionized gases, termed plasmas, can be transformed and cause a single strong explosion, which is only a fraction of a second length, which can lead to strong electron currents moving away at supersonic velocities. The opinion that scientists perceived as part of the work of the MMS mission was enough to reveal their differences from the other reconnection regimes around the planet. Like the asymmetric process found in the magnetopause around the earth, which is closer to the sun.

”This is important because we know and understand how much these relaunches are, herhangi says Torbert. Bağ How much can we prepare for the extreme events that are possible from reconnection around the world or anywhere in the universe?“

Magnetic reconnection takes place in the sun and in the universe – in all cases it can push the particles and sustain most of the change we see in dynamic space environments – so learning around the World helps us understand the re-connection in other places in the universe. Unavailable with spacecraft. The more we understand about the different types of magnetic reconnection, the more we can tell how such explosions look elsewhere.

Symmetric Reconnection

Behind the earth, magnetic reconnection away from the Moon takes place symmetrically. This simulation shows the particles that are equally away from the reconnection zone in both directions limited by the red magnetic field lines. Credits: Michael Hesse / NASA Goddard / Joy Ng

For the first symmetric event reported on October 16, 2015, and now for this symmetrical event on July 11, 2017, NASA's MMS mission went down in history through magnetic reconnection events near the Earth. Four MMS spacecraft launched from a single rocket were involved in events for only a few seconds, but the tools that UNH researchers helped develop could collect data more than a hundred times faster than ever before. As a result, for the first time, scientists can monitor the change of magnetic fields, the new electric fields as well as the velocities and directions of various charged particles.

This work was funded by the National Aeronautics and Space Administration or NASA.

Publication: R. B. Torbert et al., Üzyon Electron-scale dynamics of the diffusion region during symmetrical magnetic reconnection in space “, Science 15 November 2018: eaat2998; DOI: 10.1126 / science.aat2998

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