A new method leverages observations of microlensing effects in gravitationally lensed quasars to measure the rotation of these extreme objects’ accretion disks.
Catherine Fielder et al 2024 AJ 168 212
Follow-up Hubble Space Telescope observations suggest that some ultra-diffuse galaxies were once normal dwarf galaxies that have been stripped and heated.
Using two possible models of black hole spin and accretion, researchers have forecast very-long-baseline interferometry observations at six frequencies.
New calculations of the statistical variance, skewness, and kurtosis of the random gravitational wave background signal will aid in understanding the signal observed by pulsar timing arrays.
Only one exoplanet transit has been detected at X-ray wavelengths, but future facilities might increase that number slightly; X-ray detections would illuminate conditions in the upper atmospheres of exoplanets.
A new study details the similarities and differences between the spectra of ultra-hot Jupiters, which orbit extremely closely to the host stars, and brown dwarfs scorched by the high-energy radiation of a white dwarf.