STORY OF A DISAPPEARED STAR

 PHL 293b LBV STAR

One of the largest star in the Universe, Until yesterday, has disappeared today. What is the reason for its disappearance? This tell us something that "LEARNED HANDY and UNLEARNED not GLOBAL, IS's UNIVERSE". Let's see about it.

THE PHL 293b:

 KINMAN's Dwarf Galaxy is at a distance of 75 million Light Years from our Solar System. In this Galaxy, One of the brightest Star is PHL 293b. This Star is a Luminous Blue Variable. Our Sun belongs to Yellow Dwarf. These LBV type Stars are very rare when compared to Normal Stars. PHL 293b is 100 times greater than our Sun. The brightness of the Star is 250 Million times greater than our Sun. Did you Imagine How big it is? This Star is a variable Star. So, It can increase or decrease its Brightness. Only 20 Stars discovered in this type. So, Disappearance of one of them is Surprising one. Scientists research it for 10 years. The Star suddenly disappears. It didn't gave us any symptoms for the disappearance. Basically, A Star, In it's last stage, It becomes a Super Nova or a Hyper Nova based on its size and its Mass. After the explosion, It may become a Neutron Star or a Black Hole. But, PHL 293b not attain any stage mentioned above. Simply, it suddenly disappears. Scientists gives 2 reasons for its disappearance. Before seeing the reasons, we'll know more about these LBV Stars.

LUMINOUS BLUE VARIABLE:

In Our Sun, A loss in Mass by the ejection of Stellar Winds by the Sun. A large amount of Energy, Radiations and a small amount of mass is ejected. This is common in all Stars. But, In LBV type Stars, During the Ejection, it losses the 50% of the total mass of it. A large amount of dust is also ejected. It is almost looks like a Nebula. A LBV Star is discovered before, The last stage of the Star after the explosion is, It forms a Nebula around it. The Explosion of this Star is Naked for 20 years. The Nebula till expands and The Star is ready for it's next Explosion. 

Reason-1:

PHL 293b also may attacked by a Explosion and it forms a Dust Cloud (Nebula) around it. After 5-6 Years, The Nebula expands and visible to us. This is the first reason proposed by the Scientists. But, How can a Star suddenly Disappears?

Reason-2:

The Core of this Star is collapsed itself and it may become a Black Hole. We all know, the size of the star is directly proportional to the loss of fuel. It didn't reach the Super Nova, it directly converts from star to a Black Hole. This is the first time ever. We didn't heard it before if it becomes a BH, it is difficult to identify. After a few years, If the Black Hole forms Accretion Disc around it, We can study more about it.

THE CONCLUSION:

We can conclude this type of results only after 10 years. But this event shows us that, we can't understand this universe completely because, Learned handy,  Unlearned Global.