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Siôn Geschwindt@The Next Web //

Euclid Mission Releases First Data on Dark Matter

The ESA's Euclid mission has released its first data, offering a glimpse into the deep fields of space and marking a significant step in the study of dark matter and dark energy. The data covers 63 square degrees of the sky and includes a classification survey of over 380,000 galaxies and 500 gravitational lens candidates. The Euclid space observatory, dubbed the "dark matter hunter", aims to create the largest 3D map of the sky ever created.

This initial data release includes numerous galaxy clusters, active galactic nuclei, and transient phenomena. The mission's unique observational capabilities are expected to contribute to a better determination of the expansion rate of the Universe through gravitational-wave observations. Researchers plan to correlate events from LIGO, Virgo, and KAGRA with Euclid galaxy catalogues. Euclid's discovery of numerous gravitational lens systems could also be crucial for detecting the first gravitational waves split into multiple images by gravitational lenses, according to Miguel Zumalacárregui, group leader in the Astrophysical and Cosmological Relativity department.

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References :
  • astrodon.social: Euclid opens data treasure trove, offers glimpse of deep fields â¡ï¸ “Euclid's unique observational capability could help us to better determine the expansion rate of the Universe through gravitational-wave observations,†explains Miguel Zumalacárregui, group leader in the Astrophysical and Cosmological Relativity department at the in the Potsdam Science Park. To do this, the researchers plan to correlate events from , Virgo, and KAGRA with the Euclid galaxy catalogues. Additionally, the large number of gravitational lens systems discovered by Euclid plays an important role. “Euclid observations could also be crucial for detecting the first gravitational waves split into multiple images by gravitational lenses,†adds Zumalacárregui.
  • AkaSci ??: My God, it's full of galaxies! The first data release of the ESA Euclid "dark matter hunter" space observatory is out. Covering a huge area of the sky in 3 mosaics, 63 square degrees of the sky in total, the data release also includes numerous galaxy clusters, active galactic nuclei and transient phenomena, as well as the first classification survey of more than 380,000 galaxies and 500 gravitational lens candidates. Press release + images at 1/
  • astrodon.social: Euclid opens data treasure trove, offers glimpse of deep fields â¡ï¸ “Euclid's unique observational capability could help us to better determine the expansion rate of the Universe through gravitational-wave observations,†explains Miguel Zumalacárregui, group leader in the Astrophysical and Cosmological Relativity department at the in the Potsdam Science Park.
  • The Next Web: Euclid space telescope captures multiple ‘extremely rare’ double gravitational lenses
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@NASA //

JWST Observes Distant Galaxies, Little Red Dots

NASA's James Webb Space Telescope (JWST) has peered into the early Universe, observing galaxies from just a few hundred million years after the Big Bang. With its unique infrared sensitivity, JWST allows researchers to examine these ancient galaxies and uncover secrets from the Universe's formative years. The telescope's NIRCam (Near-Infrared Camera) played a key role in these observations.

An international team of astronomers has identified bright hydrogen emission from a galaxy, JADES-GS-z13-1, at an unexpectedly early time. This distant galaxy, observed just 330 million years after the Big Bang, has a redshift (z) of 13, indicating its age and distance. This discovery challenges existing understanding of how light could have pierced the thick fog of neutral hydrogen that filled space at that time.

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References :
  • Fraser Cain: JWST was built to see the first galaxies in the Universe coming together just a few hundred million years after the Big Bang.
  • www.newscientist.com: Little red dots seen by JWST might be a kind of black hole 'star'
  • Brian Koberlein: Images of little red dots seen in several deep-sky surveys of JWST.
  • Fraser Cain: This looks like a bizarre irregular galaxy, but it's actually two galaxies separated by billions of light-years, imaged by JWST.
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