Risultati di ricerca
30 apr 2024 · Abstract. Strongly lensed systems with peculiar configurations allow us to probe the local properties of the deflecting lens mass while simultaneously testing general profile assumptions. The quasar HE0230−2130 is lensed by two galaxies at similar redshifts (Δ z ∼ 0.003) into four observed images.
13 mag 2024 · quasar. Quasar 1229+204, as observed by the Hubble Space TelescopeThis picture shows that the quasar is surrounded by spiral arms characteristic of galaxies. The tremendous light generated by quasars and their great distance from Earth work to obscure the fainter galactic structures in which they are embedded.
- Bradley Peterson
6 mag 2024 · We use the NIRCam images to measure the flux and morphology of the quasar host galaxies. To do this, we fit the images of a quasar as a point source for the AGN plus an exponential disk for the host galaxy, and use the best-fit parameters of the exponential disk to infer the properties of the quasar host galaxy. 3.1. PSF Models and ...
6 mag 2024 · A James Webb Telescope image shows the J0148 quasar circled in red. Two insets show, on top, the central black hole, and on bottom, the stellar emission from the host galaxy. A team of MIT ...
7 mag 2024 · With meticulous analysis of JWST data, the researchers pierced through the quasar’s blinding glare. In a recent achievement, they’ve started to detect the faint traces of starlight from the ancient galaxies hosting these early supermassive black holes. Time-traveling discovery
30 apr 2024 · Using modeled quasar positions from fitting the brightness of the quasar images in ground-based imaging data from the Magellan telescope, we find that lens-mass models where each of these two galaxies is parametrized with a singular power-law (PL) profile predict five quasar images.
15 mag 2024 · Astronomy & Space. May 15, 2024 report. Editors' notes. Astronomers discover merging twin quasars. by Tomasz Nowakowski , Phys.org. Top: three-color (HSC r, i, and z-band) composite image around...
