Tag #Galaxy Evolution

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forbes.com

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Jun 5, 19:14

Extreme Nuclear Transients: Unveiling the Universe's Most Energetic Explosions

Astronomers have discovered Extreme Nuclear Transients (ENTs), powerful cosmic explosions exceeding 100 supernovae in energy output, caused by massive stars being ripped apart by supermassive black holes; these events are observable across vast distances, offering insights into galaxy formation and ...

Extreme Nuclear Transients: Unveiling the Universe's Most Energetic Explosions

Astronomers have discovered Extreme Nuclear Transients (ENTs), powerful cosmic explosions exceeding 100 supernovae in energy output, caused by massive stars being ripped apart by supermassive black holes; these events are observable across vast distances, offering insights into galaxy formation and ...

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What are Extreme Nuclear Transients and what is their significance in understanding cosmic events?

Extreme Nuclear Transients (ENTs) are a newly discovered class of powerful cosmic explosions resulting from massive stars being ripped apart by supermassive black holes. These events release energy exceeding that of 100 supernovae and remain luminous for over 150 days. Their brightness allows observation across vast cosmic distances.

elpais.com

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Mar 13, 10:10

Sag A*'s Rapid Rotation: Implications for Mass Accretion and Galactic Evolution

Sag A*, the Milky Way's central supermassive black hole, rotates rapidly, suggesting significant mass accretion from its dense gas environment, influencing star formation rates and galactic evolution; this extreme environment challenges universal star formation laws.

Sag A*'s Rapid Rotation: Implications for Mass Accretion and Galactic Evolution

Sag A*, the Milky Way's central supermassive black hole, rotates rapidly, suggesting significant mass accretion from its dense gas environment, influencing star formation rates and galactic evolution; this extreme environment challenges universal star formation laws.

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How does the rapid rotation of Sag A* affect its mass growth and the evolution of the Milky Way galaxy?

Sag A*, the supermassive black hole at the Milky Way's center, rotates rapidly, influencing its formation. Its rotation speed suggests a significant portion of its mass comes from accreting surrounding material, impacting its growth and the galaxy's evolution. This accretion process releases energy, affecting star formation.

welt.de

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Feb 13, 10:10

Record-Breaking Jet Discovered in Early Universe

An international team using the LOFAR radio telescope discovered a 200,000-light-year-long jet from a quasar (J1601+3102) in a galaxy 12.6 billion light-years away, challenging previous assumptions about jet formation in the early universe.

Record-Breaking Jet Discovered in Early Universe

An international team using the LOFAR radio telescope discovered a 200,000-light-year-long jet from a quasar (J1601+3102) in a galaxy 12.6 billion light-years away, challenging previous assumptions about jet formation in the early universe.

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What is the significance of the discovery of a 200,000-light-year-long jet from a quasar in the early universe?

An international team using the LOFAR radio telescope has discovered a 200,000-light-year-long jet emanating from a quasar in the early universe, a time when the universe was only 1.2 billion years old. This is the longest jet ever found in the young universe. The jet is propelled by a supermassive black hole 450 million times the mass of our sun, located in the galaxy J1601+3102.

theguardian.com

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Mar 20, 01:12

Dark Energy's Decline Challenges Universe's Fate

New data from the Dark Energy Spectroscopic Instrument (DESI) analyzing 15 million galaxies over 11 billion years suggests dark energy, a mysterious force opposing gravity, peaked when the universe was 70% of its current age and is now declining, challenging the prevailing cosmological model.

Dark Energy's Decline Challenges Universe's Fate

New data from the Dark Energy Spectroscopic Instrument (DESI) analyzing 15 million galaxies over 11 billion years suggests dark energy, a mysterious force opposing gravity, peaked when the universe was 70% of its current age and is now declining, challenging the prevailing cosmological model.

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What is the most significant finding from the DESI observations concerning dark energy and its implications for the universe's future?

Recent astronomical observations from the Dark Energy Spectroscopic Instrument (DESI) challenge the prevailing cosmological model. Measurements of 15 million galaxies across 11 billion years indicate that dark energy, previously believed to be constant, may have peaked when the universe was 70% of its current age and is now weakening. This contrasts with the standard model's prediction of constant dark energy driving accelerating expansion.

npr.org

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Mar 6, 22:12

Nearby Dwarf Galaxy Hosts Newly Discovered Supermassive Black Hole

A study of hypervelocity stars reveals a previously unknown supermassive black hole, approximately 600,000 times the mass of our Sun, residing in the Large Magellanic Cloud, a nearby dwarf galaxy; this discovery was made using data from the European Space Agency's Gaia space telescope.

Nearby Dwarf Galaxy Hosts Newly Discovered Supermassive Black Hole

A study of hypervelocity stars reveals a previously unknown supermassive black hole, approximately 600,000 times the mass of our Sun, residing in the Large Magellanic Cloud, a nearby dwarf galaxy; this discovery was made using data from the European Space Agency's Gaia space telescope.

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What is the significance of the discovery of a previously unknown supermassive black hole in the Large Magellanic Cloud?

A new study reveals a previously unknown supermassive black hole in the Large Magellanic Cloud, a dwarf galaxy near the Milky Way. This discovery stems from observations of 21 hypervelocity stars, whose trajectories were traced back to this black hole, which is estimated to be 600,000 times the mass of our Sun. These stars were ejected at millions of miles per hour after their binary companions were consumed by the black hole.

cnnespanol.cnn.com

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Feb 12, 01:11

Euclid Telescope Discovers Rare Einstein Ring, Unveiling New Galaxy

During its testing phase, the Euclid telescope unexpectedly captured an Einstein ring around the NGC 6505 galaxy, revealing a previously unknown galaxy 4.42 billion light-years away, enhancing understanding of dark matter and dark energy.

Euclid Telescope Discovers Rare Einstein Ring, Unveiling New Galaxy

During its testing phase, the Euclid telescope unexpectedly captured an Einstein ring around the NGC 6505 galaxy, revealing a previously unknown galaxy 4.42 billion light-years away, enhancing understanding of dark matter and dark energy.

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What is the significance of Euclid's accidental discovery of an Einstein ring around the NGC 6505 galaxy?

The European Space Agency's Euclid mission captured an unprecedented image of a rare Einstein ring, a phenomenon where light from a distant galaxy bends around a closer object. This accidental discovery, made during Euclid's initial testing phase, reveals a previously unobserved galaxy, located 4.42 billion light-years away, around the well-known NGC 6505 galaxy.

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