New Type Of Supernova Discovered By Astronomers
Scientists have discovered a new type of supernova, called the Type 1ax.
Previously, only two types of supernova were thought to exist in the universe: the core collapse and Type 1a. A Type 1a supernova involves a disrupted white dwarf, while a core-collapse supernova involves the explosion of a star approximately 10 to 100 times the size of our own sun. The Type 1ax supernova, however, is characteristically different from both.
Like the Type 1a supernova, the new Type 1ax also involves a white dwarf, though it is less forceful and also fainter, having about one-hundredth its brightness. The Type 1ax is also rarer, about one third as common as the Type 1a. Interestingly, a white dwarf can actually survive the new type of supernova explosion, unlike in the Type 1a. This makes it more of a mini-supernova.
In terms of what causes the explosion, it could be a result of the helium layer being ignited in the companion star, causing the white dwarf to explode via a shock wave. Or, the white dwarf may ignite on its own due to density and temperature alterations caused by its helium shell.
The researchers categorized the new supernova by examining 25 examples. They found that none appeared in elliptical galaxies, which are populated by old stars. This indicated that the new supernovae are located in young star systems.
The fact that the new supernova hasn't been discovered until now is not attributed to the fact that it is fewer in number, but rather to its faintness.
"For more than a thousand years, humans have been observing supernovas," Foley said. "This whole time, this new class has been hiding in the shadows."
Findings of the study are published in the Astrophysical Journal and can be found online.
White Dwarf Tears Apart Comet
Comets are part of the solar system since its beginning. Astronomers are now finding that comets might also be in other systems. This has been seen when a white dwarf tears apart a comet.
Astronomers Take A Second Look At Supernova
A recent bright flare in space was seen by astronomers. However, since then astronomers take a second look at the supernova, and found something else.
SS Cygni binary star system mystery solved with help from amateur astronomers
Amateur astronomers have helped professionals in solving a 14-year-old puzzle concerning SS Cygni star system, bursting with light.
Albert Einstein Theory Passes Biggest Test Yet
Scientists are seeking to gain a clearer understanding of our universe by testing Einstein's theories in the most extreme circumstances possible.
Antarctica Meteorites Contain Supernova Dust
Scientists believe that grains found in two Antarctica meteorites may have been formed from the same supernova that led to the creation of our solar system.
MORE IN ITECHPOST
iOS 11 Plagued with Untested Bugs and Early Adoption Pitfalls
Reports of nagging iOS 11 issues have started pouring in just a day after the software was released by Apple on supported devices.
'Tokyo Ghoul' Season 3 Delayed By Its Live-Action Movie? Ken Kenaki Returns With Another Identity?
"Tokyo Ghoul" season 3's release is delayed and there are countless speculations as to why it is being pushed back. Reports claim that the show is to give way to "One Punch Man" and "My Hero Acdemia" but new rumors say that it's lack of materials and storyline as well as its live-action movie are causing the delay.
‘Resident Evil 7: Not A Hero DLC’ First Gameplay Trailer Leaks Online
First gameplay trailer pertaining to RE7: Not A Hero DLC has just leaked on YouTube.