Researchers have finally shown the potential origin of the hidden signs of heart attack that they spit out day during daylight hours. The findings could help us learn more about how damaging solar storms can be created, a new study suggests.
Solar radio bursts are streams of electromagnetic radiation – consisting of radio waves, microwaves, ultraviolet radiation and X-rays – that are shot into space with jets of superhot plasma, known as coronal mass ejections (CMEs), at that time. the heat of the day.
Solar radio bursts, as well as other prominent radio bursts from distant stars, occasionally contain regularly repeating patterns known as periodic pulses (QPPs). These signs include a short break in the radiation stream, which causes holes and peaks when viewed on a graph, similar to an electrocardiogram (ECG or EKG), recording electrical signals from the heart.
“These models are both important for understanding how energy is released and dissipated in the Sun’s atmosphere during these spectacular explosions,” Siji Yu (opens in a new tab)a solar radio astronomer at the New Jersey Institute of Technology (NJIT) and author of the study, said in notice (opens in a new tab). “However, the origin of these recurring patterns has long been a mystery and a source of debate among solar scientists.”
Related: A mysterious ‘heartbeat’ signal has been spotted coming from space
In a study published Dec. 12, 2022, in the journal Nature communication (opens in a new tab)Yu and colleagues analyzed the pulse signal contained in a medium-sized C-class flare that was not damaged by the sun on July 13, 2017. (Solar flare classes include A, B, C, M and X, with each class being at least 10 times more powerful than the previous one.)
After analyzing data collected by NJIT’s Expanded Owens Valley Solar Array (EOVSA) in California and NASA’s Solar Dynamics Observatory, the team detected a second heartbeat signal. The second “unexpected” signal, which appears to be related to the original signal, allowed the researchers to show what happens during solar flares to activate both signals, Yu said.
Looking for back signals
A solar flare occurs when the sun’s magnetic field lines get tangled up and then snap back into place like a rubber band. This process releases a lot of energy and forces constant loops of ionized gas, or plasma, and radiation into space.
The fast-moving plasma creates a current, or stream of charged particles, that flow vertically down the center of the plasma loop in the thin paper. Disruption to these “current sheets” is believed to be the source of the “hit” in the QPP signal. But, until now, no one knows what caused the riots.
The main pulse signal detected during the 2017 solar flare, which beats every 10 to 20 seconds, is traced to the base of the current sheet, as are other QPP signals detected in other solar flares. But the second signal, which is weaker than the main signal and beats every 30 to 60 seconds, appears from all current documents, which has never been seen before.
Using the data collected by EOVSA, the team found that, despite their different periodicities, the two pulses probably have a common feature: bubble-like structures known as “magnetic islands, ” which is available in the current document.
Now, the researchers want to re-analyze data from other QPP signals to see if they may have originated from magnetic islands as well.
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