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“#Short gamma ray burst leaves most-distant optical afterglow ever detected” The afterglow of GRB181123B, captured by the Gemini North telescope, marked with a circle. Credit: Northwestern University The farther away an object lies in the universe, the fainter it appears through the lens of a telescope. So when a Northwestern University-led team of astrophysicists detected…
“#Supercomputer reveals atmospheric impact of gigantic planetary collisions” Still image cross-section showing the impact (inset) and aftermath (main picture) of a 3D simulation of a giant planetary impact using 100 million particles, coloured by their internal energy, similar to their temperature. Credit: Dr Jacob Kegerreis, Durham University The giant impacts that dominate late stages of…
“#Blast sends star hurtling across the Milky Way” The material ejected by the supernova will initially expand very rapidly, but then gradually slow down, forming an intricate giant bubble of hot glowing gas. Eventually, the charred remains of the white dwarf that exploded will overtake these gaseous layers, and speed out onto its journey across…
“#Could recently spotted dim point sources explain the galactic center excess (GCE)?” Map of S½D. Peaks with S½D ≥ 4 in the region 2° ≤ jbj ≤ 20°; jlj ≤ 20° shown as crosses. 4FGL sources shown in red circles of size 0.3°ð1°Þ for 9 ≤ TS ≤ 49ð49 ≤ TSÞ. We find 8 sources…
“#Observatory’s quick reflexes capture fleeting flash” The afterglow of GRB181123B, captured by the Gemini North telescope. The afterglow is marked with a circle. Credit: International Gemini Observatory/NOIRLab/NSF/AURA/K. Paterson & W. Fong (Northwestern University)/Image processing: Travis Rector (University of Alaska Anchorage), Mahdi Zamani & Davide de Martin Rapid follow-up of the optical afterglow from one of…
“#Breakthrough in deciphering birth of supermassive black holes” “On the left is shown a colour composite Hubble Space Telescope image of the centre of `Mirachs Ghost’. On the right is shown the new ALMA image of this same region, revealing the distribution of the cold, dense gas that swirls around this centre of this object…
“#Artificial intelligence predicts which planetary systems will survive” While three planets have been detected in the Kepler-431 system, little is known about the shapes of their orbits. On the left are a large number of superimposed orbits for each planet that are consistent with observations. An international team of astrophysicists led by Princeton’s Daniel Tamayo…
“#Earth-shaking science in the freezer: Next generation vibration sensors at cryogenic temperatures” Vibration sensor Credit: Joris van Heijningen A cutting-edge vibration sensor may improve the next generation of gravitational-wave detectors to find the tiniest cosmic waves from the background hum of Earth’s motion. During his Ph.D., postdoctoral researcher Joris van Heijningen from the ARC Centre…
“#About eight percent of red giants are covered by sunspot-like dark areas.” Three Paths to Red Giants with Spots. Credit: MPS/hormesdesign.de Starspots are more common among red giant stars than previously thought. In the journal Astronomy & Astrophysics, researchers led by the Max Planck Institute for Solar System Research (MPS) in Germany report that approximately…
“#Astronomers map massive structure beyond Laniakea Supercluster” South Pole Wall. Credit: University of Hawaii at Manoa For the past decade, an international team of astronomers, led in part by Brent Tully at the University of Hawaiʻi Institute for Astronomy, has been mapping the distribution of galaxies around the Milky Way. They have discovered an immense…