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THE HOPE. “As more mergers are detected, the prospect of identifying the host galaxy population, either directly through the detection of electromagnetic counterparts of binary neutron star mergers or indirectly through the anisotropy of the events, will become a realistic possibility.” https://lnkd.in/d8Jh7TB View in LinkedIn

IMMINENT MERGER RATE. “If roughly 1 per cent of black holes are involved in a binary black hole merger, then the reported merger rate densities from advanced Laser Interferometer Gravitational-Wave Observatory can be accommodated for a range of merger time-scales, and the detection of mergers with >50 M⊙ black holes should be expected within the next decade.” (M⊙ = solar mass ~equivalent to mass of the sun). https://lnkd.in/d8Jh7TB View in LinkedIn

DISTRIBUTION. “Most low-mass black holes (∼10 M⊙) typically reside within massive galaxies (M⋆ ≃ 10(11)  M⊙) while massive black holes (∼50 M⊙) typically reside within dwarf galaxies (M⋆ ≃ 10(9)  M⊙) today.” (M⊙ = solar mass ~equivalent to mass of the sun). https://lnkd.in/d8Jh7TB View in LinkedIn

This image includes the most distant galaxies and protogalaxies we ever have seen. The largest galaxies in the image are as close as 6 billion light years, while the smallest dots are protogalaxies as far away as 30 billion light years. This image thus spans the edge of our affectable universe, with most of the places it shows being forever beyond our reach. https://lnkd.in/dHhggEG View in LinkedIn

NO HEN’S TOOTH. “Stellar-remnant black holes should be abundant in the local Universe.” https://lnkd.in/d8Jh7TB View in LinkedIn

PREVALENT BLACK HOLES. “Fig. 3 clearly shows that the overall black hole number density in the Universe is fairly high.” https://lnkd.in/d8Jh7TB View in LinkedIn

NUCLEOSYNTHESIS. “We see that for high metallicities (Z ≳ −1.5), a very large stellar progenitor (≳90M⊙) will be required to produce the massive black holes of the type that have been observed in mergers by LIGO. Lower metallicity populations require less extreme progenitors.” (LIGO = an observatory; M⊙ = unit of stellar mass in suns). https://lnkd.in/d8Jh7TB View in LinkedIn

POLYNOMIAL COMPLEXITY IN EXPONENTIAL TIME. “What does this have to do with black holes? We will see shortly.” https://lnkd.in/dByfCJV View in LinkedIn

The mechanical wonder is now an electrinic marvel. View in LinkedIn

ARTIFICIAL STABLE SILICON DOUBLE BOND. “While carbon–carbon double bonds are common in organic chemistry, at the heart of countless chemical transformations, silicon–silicon double bonds are much rarer. Despite silicon sitting just below carbon in the periodic table, silicon double bonds are much less stable than those involving carbon.” https://lnkd.in/dvvPbnC View in LinkedIn