Weekly Resources - Aug 12
LIGO may have detected a black hole that shouldn't exist, potentially revealing the first evidence of primordial black holes formed in the earliest moments after the Big Bang. But the bigger story is how a decade of gravitational-wave astronomy has transformed from proving Einstein right into a mature science capable of uncovering entirely new physics.
Two A-site ordered cuprates exhibit the Zhang–Rice (ZR) singlet state, an electronic state associated with high-temperature superconductivity. Using X-ray spectroscopy and DFT calculations, it is found that changing the B-site element tunes the Cu–O electronic structure and Cu valence, offering a way to manipulate cuprate physics without the structural disorder caused by conventional chemical doping.
Researchers found evidence that the mix of large and small stars formed in a galaxy depends on the environment, challenging the assumption that stars form in the same proportions everywhere. Using data from the European Space Agency’s Gaia mission, they suggest astronomers should adjust the “initial mass function” used to estimate unseen stars, which could lead to more accurate measurements of galaxies’ mass, age, and evolution and help explain some unexpectedly massive galaxies observed by the James Webb Space Telescope. S
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