Webb Researchers Discover Lensed Supernova, Confirm Hubble Tension
Alvin Lieberman
CHIEF SYSTEMS ENGINEER | PE | ENGR, MSEE, BEE | NASA,FAA,IBM,NRL,USAF,USN,SSPO | S&T | RDT&E | AIAA,IEEE,NSPE,INCOSE,SPIE,ION,ANS,NDIA |
NASA’s James Webb Space Telescope’s NIRCam (Near-Infrared Camera) image of the galaxy cluster PLCK G165.7+67.0, also known as G165, on the left shows the magnifying effect a foreground cluster can have on the distant universe beyond. The foreground cluster is 3.6 billion light-years away from Earth. The zoomed region on the right shows supernova H0pe triply imaged (labeled with white dashed circles) due to gravitational lensing. In this image blue represents light at 0.9, 1.15, and 1.5 microns (F090W + F115W + F150W), green is 2.0 and 2.77 microns (F200W + F277W), and red is 3.56, 4.1, and 4.44 microns (F356W + F410M + F444W). Download the full-resolution image, both labeled and unlabeled, from the Space Telescope Science Institute. Credit: NASA, ESA, CSA, STScI, B. Frye (University of Arizona), R. Windhorst (Arizona State University), S. Cohen (Arizona State University), J. D’Silva (University of Western Australia, Perth), A. Koekemoer (Space Telescope Science Institute), J. Summers (Arizona State University). Measuring the Hubble constant, the rate at which the universe is expanding, is an active area of research among astronomers around the world who analyze data from both ground- and space- based observatories. NASA’s James Webb Space Telescope has already contributed to this ongoing discussion. Earlier this year, astronomers used Webb data containing Cepheid variables and Type Ia supernovae, reliable distance markers to measure the universe’s expansion rate, to confirm NASA’s Hubble Space Telescope’s previous measurements. Thaddeus Cesari
Directed Energy Consultant
2moVery cool. Quick question: The multiple images of lensed objects are time-delayed with respect to each other, are they not? If so, would it be possible to see a transient event like a supernova in one image and, armed wit that foreknowledge, be able to marshal diverse resources to observe the event in great detail in one of the delayed images?