Tag Archives: Black Holes

Second Gravitational Wave signal – Coalescing binary components, not Black Holes

Following the February discovery, a second signal was found by the same LIGO team in the ‘noise’, by looking for a pulse of waves of increasing frequency in the two detectors.  This pulse is longer (~55 waves compared with ~10 previously) … Continue reading

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Gruber Prize for LIGO team’s gravitational waves

The 2016 Gruber Cosmology Prize of $500 000 award citation reads: The Gruber Foundation proudly presents the 2016 Cosmology Prize to Rainer Weiss, Kip Thorne, Ronald Drever, and the entire LIGO team for pursuing a vision to observe the universe … Continue reading

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LIGO scientists row back on claim to detect black-holes from their gravitational signal

It is gradually coming out that LIGO’s main gravitational wave pulse could indicate various types of binary astrophysical systems, as we said on this blog in February. Cardoso et al 2016 point out (Phys Rev Lett. to come) there are … Continue reading

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Gravitational wave event at last – success for Einstein, not black-holes

Detecting gravitational waves after decades of searching and developing more sensitive techniques is a great achievement, in technology as well as the accompanying analysis. What a pity the research teams have sullied the discovery by conflating the detection of a … Continue reading

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Gravitational collapse without black holes

The contemporary notion of black holes originates in Oppenheimer and Snyder’s 1939 article “On Continued Gravitational Contraction” (Phys. Rev. 56:455, 1939).  Later Roger Penrose (Phys. Rev. Lett. 14:57, 1965)  showed that the O&S metric gave rise to trapped surfaces, ie. … Continue reading

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Black Holes and whacky physics on BBC’s Horizon

The Horizon programme’s Who’s afraid of a big black hole (BBC2 16 Feb. and BBC4 19 Feb. 2012) shows how badly so-called ‘leading physicists’ have departed from solid analytical physics. This programme was a vehicle for physics-mystics; giving up on making their … Continue reading

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NAM2012: confronting astronomers’ Black-Hole claims

“Black holes are everywhere” and “lowest-mass black holes are formed when very massive stars eject most of their material into space leaving a compact core that collapses into a black hole”, declares the Royal Astronomical Society press release 12/20 of 27th … Continue reading

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