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    Category Astronomy/Space

    Researchers Study a Million Galaxies to find out how the Universe Began

    December 26, 2023, Categories  Astronomy/Space

    fig2
    Visualization of how the “different” primordial fluctuations of the universe lead to the different spatial distribution of dark matter. The central figure (common to both the upper and lower rows) shows the fluctuations in the reference Gaussian distribution. The color gradation (blue to yellow) corresponds to the value of the fluctuation at that location (low to high density regions). The left and right figures show fluctuations that deviate slightly from the Gaussian distribution, or are non-Gaussian. The sign in parentheses indicates the sign of the deviation from Gaussianity, corresponding to a negative (-) deviation on the left and a positive (+) deviation on the right. The top row is an example of isotropic non-Gaussianity...
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    Hubble Sights a Galaxy with ‘Forbidden’ Light

    December 25, 2023, Categories  Astronomy/Space

    A spiral galaxy. It appears to be almost circular and seen face-on, with two prominent spiral arms winding out from a glowing core. It is centered in the frame as if a portrait. Most of the background is black, with only tiny, distant galaxies, but there are two large bright stars in the foreground, one blue and one red, directly above the galaxy.
    This NASA Hubble Space Telescope image features a bright spiral galaxy known as MCG-01-24-014, which is located about 275 million light-years from Earth.
    ESA/Hubble & NASA, C. Kilpatrick

    This whirling image features a bright spiral galaxy known as MCG-01-24-014, which is located about 275 million light-years from Earth. In addition to being a well-defined spiral galaxy, MCG-01-24-014 has an extremely energetic core known as an active galactic nucleus (AGN) and is categorized as a Type-2 Seyfert galaxy.

    Seyfert galaxies, along with quasars, host one of the most common subclasses of AGN...

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    Research Charts Stellar Birthplaces in the Whirlpool Galaxy for the first time

    December 22, 2023, Categories  Astronomy/Space

    Stellar Birthplaces in the Whirlpool Galaxy
    This illustration depicts the distribution of diazenylium molecule radiation (false colors) in the Whirlpool Galaxy, compared with an optical image. The reddish areas in the photograph represent luminous gas nebulae containing hot, massive stars traversing dark zones of gas and dust in the spiral arms. The presence of diazenylium in these dark regions suggests particularly cold and dense gas clouds. Credit: Thomas Müller (HdA/MPIA), S. Stuber et al. (MPIA), NASA, ESA, S. Beckwith (STScI) und das Hubble Heritage Team (STScI/AURA)

    An international research team led by the Max Planck Institute for Astronomy (MPIA) and involving the University of Bonn has mapped the cold, dense gas of future star nurseries in one of our neighboring galaxies with an unprecedented degree of detail...

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    Second Radio Relic discovered in the Galaxy Cluster Abell 2108

    December 21, 2023, Categories  Astronomy/Space

    Second radio relic discovered in the galaxy cluster Abell 2108
    Color composite image of Abell 2108 showing Pan-STARRS ‘r’ band optical image in green, XMM-Newton X-ray in blue, and uGMRT point source removed radio image in red. Credit: arXiv (2023). DOI: 10.48550/arxiv.2312.04170

    Astronomers from India and Taiwan have used the upgraded Giant Metrewave Radio Telescope (uGMRT) to perform radio observations of a galaxy cluster known as Abell 2108. As a result, they detected a second radio relic, which is much larger and differs in morphology from the previously identified relic in this cluster. The finding was reported in a paper published Dec. 7 on the pre-print server arXiv.

    Radio relics are diffuse, elongated radio sources of synchrotron origin...

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