A new study published in Astronomy & Astrophysics unveils a powerful way to determine the size of dark matter haloes—the massive, invisible structures that host galaxies—by simply measuring how large galaxies appear in deep astronomical images. Researchers Ignacio Trujillo and Claudio Dalla Vecchia, from the Instituto de Astrofísica de Canarias (IAC) and the Universidad de La Laguna (ULL), demonstrate that galaxy size can serve as a precise proxy for halo size, offering measurements up to six times more accurate than previous methods. Using the cutting-edge EAGLE cosmological simulations
The international CTAO LST Collaboration , in which the Instituto de Astrofísica de Canarias (IAC) plays a prominent role, released remarkable findings from observations of GRB 221009A—the brightest gamma-ray burst (GRB) ever recorded. The results were published by the renowned journal The Astrophysical Journal Letters (ApJ Letters) . The publication presents in-depth observations conducted in 2022 with the Large-Sized Telescope (LST ) prototype, the LST-1, during its commissioning phase at the Roque de los Muchachos Observatory (ORM) on the CTAO-North site in La Palma, Spain. The
The four large sized telescopes of the CTAO on La Palma reach a key milestone in their construction The LST-2 telescope has successfully completed the installation of its camera support structure (CSS), making it the last of the four Large Sized Telescopes ( LST ) to reach this important milestone in its construction at the Roque de los Muchachos Observatory of the Instituto de Astrofísica de Canarias (IAC) on La Palma. This telescope is part of the ambitious CTAO ( Cherenkov Telescope Array Observatory ) project, which will create the world's largest network of telescopes for the detection
