Lights at Black Hole

30 Jul 2021

At ... peering at X-rays flaring out of a black hole 800 million light years away, a series of smaller flashes of light were seen. They are thought to be a reflection of the main X-ray flare - but are they?

At ... a computer simulation of magnetic fields surrounding a black hole. The simulation is said to have shown field lines breaking and reconnecting with pockets of plasma launched into the black hole - or outwards, into space. Einstein's 'general relativity' predicts, we are told, that no matter what a black hole consumes its external properties depend only on its mass, its rotation, and its electric charge. Is the last bit a recent addition, or a new interpretation of relativity? However, if a black hole has a long lived magnetic field this part of general relativity will be compromised - we are told. To get around this unwelcome anomaly they say magnetic fields around a black hole break and reconnect, creating plumes of plasma. This process would drain the magnetic field of its energy - and may explain flares near black holes. It seems scientists are desperate to incorporate electro-magnetism into the research and the assumption is that flares accompany black holes. One might say, in contrast, the X-ray and the flare are the black hole - but that is a step too far it would seem. Mind you, it is worth while, for the moment, sticking to Einstein and general relativity, and incorporating magnetic fields into the picture - but there is obviously more yet to discover. Expect updates as the new discoveries kick in with the recently installed telescope arrays.

At ... magnetic fields are implicated in the mysterious midlife crisis of stars. Did you know stars had a mid life crisis - or did not perform per mainstream thinking? Not many people I would guess - apart from the insiders. It is said slower rotation of stars leads to altered magnetic fields and less stellar activity.

At ... concerns gamma ray bursts amid supernova explosions - and mainstream thinking.