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    early universe tagged posts

    Black Hole at the Center of a Galaxy in the Early Universe received Less Mass Influx than expected, astronomers find

    January 31, 2024, Categories  Astronomy/Space

    Reddish vortex seen from from the side above with a bright centre and a thin ray protruding vertically from the plane
    Cosmic powerhouse: Artist’s impression of a quasar whose core region was literally set in motion in the early universe. While galaxies often merged with each other at that time, large amounts of matter were thrown into the centres of the galaxies. When matter orbits the supermassive black hole in the centre of a galaxy, energy is released, which explains the enormous brightness of an active galaxy. The quasar can therefore still be observed from a great distance today.
    © ESO / M. Kornmesser

    With the upgraded GRAVITY-instrument at the Very Large Telescope Interferometer of the European Southern Observatory, a team of astronomers led by the Max Planck Institute for Extraterrestrial Physics has determined the mass of a black hole in a galaxy only 2 billion years after the Big Bang...

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    Astronomers witness the Birth of a very Distant Cluster of Galaxies from the Early Universe

    April 4, 2023, Categories  Astronomy/Space

    This image shows several galaxies distributed over a black background. The galaxies have colours that range from blue, orange-red, yellow and white. In the centre of the image is a larger concentration of galaxies. Overlaid on the galaxies in the middle is a blue and semi-transparent region. It has a clumpy form with indistinct contours. There are smaller, dark blue regions around it.
    Using the Atacama Large Millimeter/submillimeter Array (ALMA), of which ESO is a partner, astronomers have discovered a large reservoir of hot gas in the still-forming galaxy cluster around the Spiderweb galaxy — the most distant detection of such hot gas yet. Galaxy clusters are some of the largest objects known in the Universe and this result, published today in Nature, further reveals just how early these structures begin to form.

    Astronomers have discovered a large reservoir of hot gas in the still-forming galaxy cluster around the Spiderweb galaxy — the most distant detection of such hot gas yet. Galaxy clusters are some of the largest objects known in the Universe and this result further reveals just how early these structures begin to form.

    Using the Atacama Large Millimete...

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    Discovering Rare Red Spiral Galaxy Population from Early Universe with the James Webb Space Telescope

    December 14, 2022, Categories  Astronomy/Space

    Morphology of galaxies contain important information about the process of galaxy formation and evolution. With its state-of-the-art resolution, NASA’s James Webb Space Telescope has now captured several red spiral galaxies in its first image at an unprecedented resolution. Researchers have now analyzed these galaxies, revealing that these are among the furthest known spiral galaxies till date. The analysis further detected a passive red spiral galaxy in the early universe, a surprising discovery.

    Spiral galaxies represent one of the most spectacular features in our universe. Among them, spiral galaxies in the distant universe contain significant information about their origin and evolution...

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    Non-detection of Key Signal allows Astronomers to Determine what the First Galaxies were – and weren’t – like

    November 29, 2022, Categories  Astronomy/Space

    Observations by the NASA/ESA Hubble Space Telescope have taken advantage of gravitational lensing to reveal the largest sample of the faintest and earliest known galaxies in the universe.
    Early galaxies capture by the NASA/ESA Hubble Telescope
    Credit: NASA Goddard

    Researchers have been able to make some key determinations about the first galaxies to exist, in one of the first astrophysical studies of the period in the early Universe when the first stars and galaxies formed, known as the cosmic dawn.

    Using data from India’s SARAS3 radio telescope, researchers led by the University of Cambridge were able to look at the very early Universe — just 200 million years after the Big Bang — and place limits on the mass and energy output of the first stars and galaxies.

    Counterintuitively, the researchers were able to place these limits on the earliest galaxies by not finding the signal they had been looking for, known as the 21-centimetre hydrogen line.

    This non-detectio...

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