Physics And Relativistic Beliefs In The Black Holes

They are natures very own Death Star beams -- ultra-powerful jets of energy that shoot out from the vicinity of black holes like deadly rays from the Star Wars super-weapon. Now a team of scientists led by the University of Southampton has moved a step closer to understanding these mysterious cosmic phenomena -- known as relativistic jets -- by measuring how quickly they switch on and start shining brightly once they are launched. How these jets form is still a puzzle. One theory suggests that they develop within the accretion disc -- the matter sucked into the orbit of a growing black hole. Extreme gravity within the disc twists and stretches magnetic fields, squeezing hot, magnetised disc material called plasma until it erupts in†¦show more content†¦This blink of an eye delay was calculated to represent a maximum distance of 19,000 miles (30,000 km), impossible to resolve at the distance of V404 with any current telescope. Dr Gandhi, of the University of Southampton, said: Scientists have been observing jets for decades, but are far from understanding how nature creates these mind-bogglingly vast and energetic structures. Now, for the first time, we have captured the time delay between the appearance of X-rays and the appearance of optical light in a stellar-mass black hole at the moment jet plasma is activated. This lays to rest the controversy regarding the origin of the optical flashes, and also gives us a critical distance over which jet plasma must have been strongly accelerated to speeds approaching that of light. In Star Wars terms, the key measurement of this study can roughly be likened to measuring the distance between the surface of the Death Star, where multiple rays of light shoot out, and the point where they converge into a single bright beam. But the physics of black hole jets has nothing to do with lasers or the fictional Kyber crystals that power the Death Star. Nature has found other ways to power jets, said Dr Gandhi. Gravity and magnetic fields play the key roles here, and this is the mechanism we are trying toShow MoreRelatedOrganisational Theory230255 Words   |  922 Pagesour attempts at making decisions about what to do in particular circumstances, nobody escapes making or assuming . . . theoretical linkages. Every intentional act can be seen as an attempt to produce some desired state of affairs. This implies the belief on the part of the actor that a causal relationship exists between his or her decision, or act, and the state of affairs he or she desires. In this sense much of our everyday social lives and our work activities are in essence theory-dependent activities