Astrophysic

© 2004 author: Michael Köchling



How are super novas of the class 1A created ?

 

This type of the super-novas, it is regarded as standard-candles to the distance-measurement in the cosmos because their brightness should reach on the basis of intensity same from calculations always. This was assumed anyway until now. However meanwhile one knows that variations exist also here. These are caused by different rotation-impulses, which are influenced additionally by different masses. A high rotation-impulse has the cover expanded more strongly the amalgamation-processes run out more slowly through what in it and the star can collect more matter.

However, we first look at the reason-prerequisites for such an event. To the exit-situation, a narrow duplicate-star-pair belongs with which had already finished its amalgamation-period the one and to one „white dwarf-star“ became. The neighbour-star has the stage meanwhile a „red giants“ attains and puffs up considerably. On this occasion, it occurs on the basis of the proximity of the two stars that the dwarf-star of it „red giants“ matter sucks in. This matter-stream falls in spirals on its surface. Long-term, the mass of the dwarf-star increases hereby. Within limits are kept this however.

Certainly, you know that it no one „white dwarf-star“ with more than 1,4 sunbathe-masses can give. This was justified mathematically by the Indian astrophysicist of Chandra Sekhar. And only became actual until now „white dwarfs“ with at most 1,2 sunbathe-masses found. Rest-stars with masses of 1,4 - 2,5 sunbathe-masses forms the class of that „neutron-stars“.

Let's look at the dwarf-star first. It almost fully consists of nickel, irons and other heavy metals. There are hardly amalgamation-processes for this reason there. He is on end of his evolution and cools slowly in further billions years.

What happens with the sucked in mass on the surface of the dwarf-star in the duplicate-system however and how does super-novas come to one? The sucked in mass consists mainly of the easiest elements, since it from the wrap-region the „red giants “comes. It is about a plasma and in it is contained electrons, protons, alpha - particles and a multiplicity heavy-ions. This plasma forms a mash at the surface of the dwarf-star densely, at the vast gravitational-force works. The matter is compressed there so strongly that roughly much weighs one litre of it, how one 2000t - steam-locomotive.

The plasma-cover increases with the time however, because it comes supplies of the neighbour-star permanently. The soon incipient amalgamation-processes have the cover expanded. The stream at matter of the neighbour becomes however ever more inferior and already soon the sucked in plasma-supplies are to heavy elements until to the iron amalgamates. The rotation-impulse of the dwarf-star was crucial with it for it, like quickly this reserves was depleted and how much mass could be sucked in. A fast rotation left how above already represented, the cover more strongly expands, the amalgamation-courses ran out more slowly through what and more mass could be sucked in by it. A slow rotation led against it to a far faster end, because the gravitation could work here more strongly.

Has overstepped the white Dwarf the mass of 1,4 sunbathe-masses and takes place amalgamations no longer sufficiently, the known implosion of the core further increased now and the explosion of the wrap-area occurs. We have a super-nova of the class 1a!

And remains again a „white dwarf “back with a mass of 0,8 - 1,2 sunbathe-masses. This process can however hardly recur in the same system because its still remained cover from it-blows the super-novas the gigantic neighbour mainly and both stars because of the mutual mass-loss can be not longer tied gravitational. They diverge inexorably. Often, they become too so-called „quickly-runners“. Already some of such objects were discovered and after they had retraced their tracks, their origin-place could be investigated several cases. There, they found tracks of the former super-novas.


In the astrophysics, much is possible, however, it should always be compatible with the natural conditions.

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