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Magnetic Reconnection

All articles tagged with #magnetic reconnection

Aditya-L1 uncovers magnetic fix behind the Sun's scorching corona
science15 days ago

Aditya-L1 uncovers magnetic fix behind the Sun's scorching corona

New findings from India's Aditya-L1 mission show the Sun's outer atmosphere, the corona, is heated mainly by magnetic-field-line reconnection (≈93%), with surface waves contributing about 7%. By analyzing a highly energetic CME on 5 August 2024, scientists quantified energy replenishment and confirmed the corona remains exceptionally hot despite repeated eruptions; the results, published in Astrophysical Journal Letters, provide a key benchmark for solar physics.

via BBC|
#aditya-l1#corona#magnetic-reconnection
Parker Solar Probe Finds Unexpected High-Energy Protons From Near-Sun Magnetic Reconnection
space2 months ago

Parker Solar Probe Finds Unexpected High-Energy Protons From Near-Sun Magnetic Reconnection

NASA’s Parker Solar Probe crossed the solar corona during perihelion and recorded protons at energies far above what existing reconnection-driven acceleration models at the heliospheric current sheet could predict, linking magnetic island merging in the reconnection exhaust to a near-Sun source of high-energy particles and prompting questions about the limits of current particle-acceleration theories and implications for coronal heating.

via Space Daily|
#heliospheric-current-sheet#magnetic-reconnection#parker-solar-probe
Sun’s Flares Revealed as Magnetic Avalanches, Solar Orbiter Finds
space7 months ago

Sun’s Flares Revealed as Magnetic Avalanches, Solar Orbiter Finds

ESA’s Solar Orbiter watched an avalanche of smaller magnetic disturbances cascade into a mid‑class solar flare, revealing how energy is released in the sun’s corona through a sequence of reconnection events. The multi‑instrument observations (EUI, SPICE, STIX, PHI) tracked rapid changes over about 40 minutes, with the findings published in Astronomy & Astrophysics. This work advances understanding of flare triggers and could improve forecasting of Earth‑impacting solar activity.

via Space|
#magnetic-reconnection#solar-flare#solar-orbiter
Magnetic Avalanches Trigger Solar Flares, New Solar Orbiter View Reveals
science7 months ago

Magnetic Avalanches Trigger Solar Flares, New Solar Orbiter View Reveals

ESA's Solar Orbiter captured high-cadence observations showing solar flares arise from avalanche-like magnetic reconnection: a weak disturbance spawns a cascade of twisted field strands that rapidly reconnect, creating bright ribbons, fast plasma outflows up to ~400 km/s, and continued plasma rain after the flare, implying energy moves from magnetic fields to solar plasma and this avalanche mechanism may be common across flares.

via Gizmodo|
#magnetic-reconnection#plasma-rain#science
Avalanche of magnetic reconnection powers solar flare, Solar Orbiter reveals
space-science7 months ago

Avalanche of magnetic reconnection powers solar flare, Solar Orbiter reveals

ESA's Solar Orbiter captured a large solar flare as a cascade of rapid reconnection events—an avalanche that builds from weak disturbances to a full eruption—producing rain-like plasma blobs and high-energy X-rays; four instruments provided a detailed, multi-instrument view, supporting avalanche models and improving understanding of energy transfer from magnetic fields to plasma and particles, with implications for space weather forecasting.

via European Space Agency|
#magnetic-avalanche#magnetic-reconnection#plasma-blobs
Scientists Observe First 'Switchback' Phenomenon in Earth's Magnetosphere
science9 months ago

Scientists Observe First 'Switchback' Phenomenon in Earth's Magnetosphere

Scientists have for the first time detected a zigzag-like 'switchback' phenomenon in Earth's magnetosphere, a plasma structure associated with magnetic reconnection events that can influence space weather and potentially disrupt Earth's technological systems. The discovery was made by NASA's MMS spacecraft near the magnetosheath, providing new insights into how solar wind interacts with Earth's magnetic field and improving the ability to predict geomagnetic storms.

via IFLScience|
#earth#magnetic-reconnection#magnetosphere
New Research Reveals Solar Flares Are Significantly Hotter Than Previously Believed
science11 months ago

New Research Reveals Solar Flares Are Significantly Hotter Than Previously Believed

A new study reveals that during solar flares, ions are significantly hotter than electrons—about 6.5 times hotter—explaining long-standing spectral line broadening mysteries and impacting space weather understanding. This insight suggests that ions' higher temperatures, especially during the flare's early stages, play a crucial role in flare dynamics and observations.

via Earth.com|
#ion-temperature#magnetic-reconnection#science
Scientists Unveil New Techniques to Detect and Predict Violent Solar Winds Threatening Earth
science-and-technology1 year ago

Scientists Unveil New Techniques to Detect and Predict Violent Solar Winds Threatening Earth

Researchers have developed a new method using soft X-rays and supercomputer simulations to measure the magnetic reconnection rate of solar wind energy into Earth's magnetosphere, which could improve space weather forecasting and protect space infrastructure as human activity expands beyond Earth.

via Energy Reporters|
#earths-magnetosphere#magnetic-reconnection#science-and-technology