7/26/2023 0 Comments Powerful radio signal from space![]() With each new discovery, astronomers are narrowing down the possible explanation for these mysterious signals. They also do not come from dwarf galaxies, which scientists previously failed to rule out as a possibility. The flares likely do not originate from the explosive deaths of these young stars, nor the merger of neutron stars, scientists said. The images indicate that the FRBs likely do not come from the galaxies’ youngest, most massive stars. Some of the arm structures were more tightly wound, while others were looser, showing the differences in the distribution of stars. The imaging allows us to get a better idea of the overall host-galaxy properties, such as its mass and star-formation rate, as well as probe what’s happening right at the FRB position because Hubble has such great resolution.” “Most of the galaxies are massive, relatively young, and still forming stars. This is the first high-resolution view of a population of FRBs, and Hubble reveals that five of them are localized near or on a galaxy’s spiral arms,” said lead author Alexandra Mannings. (SCIENCE: NASA, ESA, Alexandra Mannings (UC Santa Cruz), Wen-fai Fong (Northwestern) IMAGE PROCESSING: Alyssa Pagan (STScI) The dotted oval lines in each of the four images mark the location of the brilliant radio flares. The two digitally enhanced images on the right reveal each galaxy’s spiral structure in more detail. The two images at left show the full Hubble snapshots of each galaxy. ![]() Astronomers using the Hubble Space Telescope have tracked down two brief, powerful radio bursts to the spiral arms of the two galaxies shown above. One feature of all of these distant galaxies is their “spiral arms,” where stars form. In the new study, set to publish in The Astrophysical Journal, researchers using Hubble’s Wide Field Camera 3 were able to pinpoint five out of eight recent FRBs to their host galaxies, as well as the kinds of locations they originated from. Scientists are interested in tracking where these intense pulses are coming from so they can determine what kind of cosmic events trigger them. Business & Finance Click to expand menu.
0 Comments
Leave a Reply. |