The famous Proxima Centauri activity was well known to astronomers using visible wavelengths, but new notes with the large ATACAMA/sublimer (ALMA) group highlights the activity of the extremist star in the lengths of radio and millimeters.
The artist’s concept of a wonderful luminous from Proxima Center. Credit image: S. Dagnello, NRAO / AUI / NSF.
Proxima Centauri is a red dwarf star located about 4.24 years light in the Centaurus constellation.
In 1915, the star was discovered by Scottish astronomy, Robert Enis, the star is invisible to the naked eye.
The average shine is very low, which is very small compared to other stars, in about eight of the sun’s mass.
Proxima Centeri is also known as Alpha Centauri C, because it is actually part of the Triple Star system.
The star separating his largest comrades, Alpha Santori A and B, is about 0.2 light years old – equivalent to 400 times the size of the orbit of Neptune.
Proxima Centauri hosts an external Earth’s planet, Proxima B, in its residence area at 0.0485 AU.
The star was firmly as a very active star, making it a major goal to investigate the effects of the star activity on the ability of planets that revolve around the red dwarves.
In a new study, the astronomer at the University of Colorado used Kenana Burton, Merridith McGregor, astronomer at Johns Hopkins University, and her colleagues, archive data and new Alma notes to study the wavelength of the wavelengths of the birthdays in Proxima Centauri.
The size of the small Proxima center and the strong magnetic field indicates that its entire interior structure (unlike the sun, which has thermal and non -introduction layers), makes the star more active.
Its magnetic fields become twisted, develop tension, and ultimately, they send currents of energy and molecules out in what is observed as flares.
“Our sun’s activity does not remove the Earth’s atmosphere, and instead causes beautiful arms because we have a thick atmosphere and a strong magnetic field to protect our planet.”
“But the falakes of Proxima Centeri is much more powerful, and we know that they have rocky planets in the area suitable for housing.”
“What do these torches do in their atmosphere? Is there a large flow of radiation and molecules that are chemically modified, or maybe they are completely eroded?”
This research represents the first multi -wavelength study using millimeter notes to detect a new look at torch physics.
Combining 50 hours of Alma notes using each of the full 12 -meter and as well as the ACA 7 m.24 To 1027 Erg, with a short period of 3 to 16 seconds.
“When we see torches with pain, we see electromagnetic radiation – light in different wavelengths,” said Dr. McGregor.
“But the appearance is deeper, the revival of the wavelength of the radio also gives us a way to track the properties of those particles and get a treatment on the star’s release.”
To do this, astronomers describe the star (the so -called distribution of glow frequency) to draw the number of torches as a function of their energy.
The tendency of this distribution usually tends to follow the function of the Energy Law: Smaller torches (less vibrant) occur frequently, while larger and more active flares occur regularly.
Proxima Centauri suffers from many torches that researchers have discovered many torches within each energy range.
Moreover, they were able to determine the inactivity of the highest energy torches of the star, describing how the stage of the dissolution of the flares was much longer than the primary explosion stage.
The wavelengths of the radio and millimeters help restrict the energies associated with these flares and related molecules.
“It seems that the throat of the millimeter is more frequent,” said Dr. McGregor.
“It is a law different from what we see in the visual wavelengths.”
“If we only look at the lengths of visual waves, we miss important information.”
“Alma is the only sensitive millimeter overlap scale for these measurements.”
team Results Posted in Astronomical physical magazine.
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Burton Kayna And others. 2025. APJ 982, 43; Doi: 10.3847/1538-4357/ada5f2
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