It was even visible toNaked: Scholars report in a report from Discovery The fastest ever! That was just over a year ago: it appeared in the sky on June 12, 2021, and then faded away just a day later. “It was only about a day; the fastest previous nova was the one we studied in 1991, the V838 Herculis, which faded out in about two or three days.”explains Summer Starrfield, the professor and in the School of Earth and Space Exploration at Arizona State University.
It was renamed V1674 Herculis, as its name suggests, inFrom Hercules, visible from during summer nights. It was discovered by chance, by A It is located in Japan, and then many American astronomers and astrophysicists studied it. Usually, such events last between a week and a few months. these It appears in the sky as new hence the term Nova who was chosen to appoint them.
shards of white dwarfs
It corresponds to a sudden and severe emission ofvisible from It consists of a star and a white dwarf. The latter is actually the remains of a dead star: white dwarfs that are created after Not too bulky, when you run out of fuel. Then it goes through a phase Where the upper layers extend. Then its outer layers pop out, leaving only the core of the star, which is compressed and transformed into a white dwarf.
often found inthese Especially compressed attraction of their less dense companion. As the material twists and turns as it moves toward the white dwarf, it forms an accretion disk. Inside this disk, the material is so intensely heated, that it turns into plasma, and thus into ionized. This ionized gas heats up. Much. To the degree of provocation, when the temperature and Peak and thermonuclear explosions. versions of The surprising events that astronomers discover next.
Contains other puzzles
But be careful not to confuse it with a fileWhich indicates either the death of a huge star in where , or the explosion of a white dwarf when it becomes very massive. However, they, like supernovae, can lead to , similar to ours. This is what the research team is trying to study. ” We are still trying to understand how the solar system formed, and where its chemical elements came from. S. Starrfield confirms. One of the things we will learn from this nova is, for example, how much that resulted from this explosion. We are now fairly certain that a significant portion of the lithium found on Earth resulted from these types of eruptions. »
In addition to its speed, the researchers note another property: the light and energy we receive from the pulse of V1674 Herculis. Every 501 seconds, a visible oscillation occurs both in the visible range and in. Even today, a year later, this pulse continues, always with the same regularity. “The most unusual thing is that this oscillation was observed before the explosion, but it was also present when the nova was brighter, about 10 degrees.”Mark Wagner, a researcher at Ohio State University explains. In the future, the team intends to look into the cause of the explosion, so the processes that lead to a big explosion Similar to this, especially with regard to the case So short.