Anderson, N., Comer, G.L., Glampedakis, K.: How viscous is a superfluid neutron star core? Nucl. Phys. A 763 , 212–229 (2005)Andersson, N., Comer, G.L. and Glampedakis, K., How viscous is a superfluid neutron star core ?, preprint (2004)...
Two protons combine to form a deuterium atom (hydrogen atom with one neutron and one proton), a positron (similar to an electron, but with a positive charge) and a neutrino. A proton and a deuterium atom combine to form a helium-3 atom (two protons with one neutron) and a gamma ray...
motion or spinning and there is not a visible reason for this motion and the invisible reason has an effect that appears to be caused by an object with a mass greater than three solar masses (too big to be a neutron star), then it is possible that a black hole is causing the motion...
This kind of star fuses heavier and heavier elements in its core, eventually becoming so massive that it cannot hold itself up against gravity, Borowski said. The result is a huge explosion called a supernova. The star's core lives on as either a neutron star or a black hole, according ...
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How strong gravity is when the neutrons are not together in the neutron star, and how gravity acts when they are separated?Neutron stars:The Neutrons stars have an intense field that can impact the orbits and other planets if they come close...
We consider a hot white dwarf, in which the main source of energy loss is plasmon decay. We also regard a U(1)Lµ−Lτ leptophilic dark photon that contributes to the plasmon decay. This novel vector mediator has different contributions for each flavour of neutrino-antineutrino pairs ...
If an atom absorbs a photon of light with enough energy — say an ultraviolet photon from a hot star— this absorbed energy can cause an electron to transition to a higher energy level for a short time. This is an unstable situation, however, so the electron drops back down and as it ...
But the composition of the surface is thought to remain very nearly the same as that of the protostar, as it is not hot enough there for fusion to occur. Measuring the abundance of elements on a star’s surface therefore gives an idea of the protostar’s composition and is a powerful ...
supernovae, they blast their elements to space. The best example of a supernova is the Crab Nebula, in Taurus. The core of the original star is left behind as the rest of its material is blasted to space. Eventually, the core could compress to become a neutron star or a black hole....