A group of British astrophysicists were monitoring a star explosion in the nearby galaxy M82 when suddenly a radio emission occurred but took place only for several days which is a very short time in astronomical terms. The reason scientists were so confused by the radio waves is that it doesn’t resemble the usual supernovae’s emissions : they normally take more than few weeks to get brighter and need months to fade while the radiation keeps changing along the process. The specific signal coming from M82, on the other hand, hasn’t changed that much neither in terms of brightness, nor in spectrum of radiation for more than a year.
However, the object appears to be moving with an extreme velocity which equals four times the speed of light. Such a speed is typical for pieces of material that are usually scattered out by black holes. The astrophysicists had two hypotheses regarding the nature of the unknown object : the first being that the object is black hole which proved wrong because it wasn’t placed quite at the centre of the galaxy where black holes are usually found; the other assumption included the mystery thing being a “microquasar” ( a radio source formed after a massive star explosion) which was also discarded as wrong since the object wasn’t emitting X-rays and microquasars normally do.
The scientist haven’t reached a solid conclusion regarding the origin of the object but the discovery about its existence is said to be one of the most important ones in astrophysics for the last decade.