Tag #Supermassive Black Hole

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aljazeera.com

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Sep 25, 13:17

Smaller Supermassive Black Hole Found in Distant Galaxy

A supermassive black hole, initially estimated to be ten times larger, was found to have a mass equal to only one billion suns in a distant galaxy observed by scientists from the University of Southampton and colleagues, using the Gravity+ instrument at the European Southern Observatory in Chile.

Smaller Supermassive Black Hole Found in Distant Galaxy

A supermassive black hole, initially estimated to be ten times larger, was found to have a mass equal to only one billion suns in a distant galaxy observed by scientists from the University of Southampton and colleagues, using the Gravity+ instrument at the European Southern Observatory in Chile.

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How did the research team determine the black hole's mass and what methods were used?

The team used the Gravity+ instrument at ESO's Very Large Telescope, combining light from four telescopes to analyze hot gas spiraling into the black hole. By observing the gas's behavior and interaction with intense radiation, they calculated the black hole's mass and determined that intense radiation prevents it from rapidly gaining mass.

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.

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.

dw.com

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Jan 13, 22:08

Unprecedented Plasma Jets Ejected from Supermassive Black Hole 1ES 1927+654

An international team observed unusual X-ray fluctuations and plasma jets ejected from the supermassive black hole 1ES 1927+654 in the Draco constellation, 270 million light-years away, following a 2018 outburst; a low-mass white dwarf star is the most plausible explanation.

Unprecedented Plasma Jets Ejected from Supermassive Black Hole 1ES 1927+654

An international team observed unusual X-ray fluctuations and plasma jets ejected from the supermassive black hole 1ES 1927+654 in the Draco constellation, 270 million light-years away, following a 2018 outburst; a low-mass white dwarf star is the most plausible explanation.

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What is the most likely explanation for the formation of the plasma jets observed near 1ES 1927+654, and what evidence supports this hypothesis?

The observations, using data from NASA missions and other facilities, challenge existing understanding of supermassive black holes. The 2018 outburst was followed by a period of calm before a steady increase in low-energy X-rays starting in May 2022. High-resolution radio images revealed the plasma jets, potentially providing clues to why only some supermassive black holes produce such jets.

dailymail.co.uk

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Sep 22, 13:21

Black Hole RACS J0320–35: Growing at an Unprecedented Rate

Located 12.8 billion light-years away, the supermassive black hole RACS J0320–35 is growing at 2.4 times the theoretical limit, exceeding expectations and challenging current understanding of black hole accretion.

Black Hole RACS J0320–35: Growing at an Unprecedented Rate

Located 12.8 billion light-years away, the supermassive black hole RACS J0320–35 is growing at 2.4 times the theoretical limit, exceeding expectations and challenging current understanding of black hole accretion.

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What is the exceptional characteristic of the black hole RACS J0320–35, and what are the immediate implications?

RACS J0320–35's exceptional characteristic is its growth rate, exceeding the Eddington limit by 2.4 times. This challenges the established theory of black hole accretion and necessitates a reassessment of current models.

elmundo.es

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Feb 18, 22:08

James Webb Reveals Constant Flaring Activity of Milky Way's Supermassive Black Hole

The James Webb Space Telescope's NIRCam observed Sagittarius A*, revealing constant intense flaring activity with flares ranging from seconds to months, challenging prior models. The accretion disk produced 5-6 major flares daily, exhibiting a constantly changing, seemingly random light show.

James Webb Reveals Constant Flaring Activity of Milky Way's Supermassive Black Hole

The James Webb Space Telescope's NIRCam observed Sagittarius A*, revealing constant intense flaring activity with flares ranging from seconds to months, challenging prior models. The accretion disk produced 5-6 major flares daily, exhibiting a constantly changing, seemingly random light show.

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How do the observed variations in flare duration and intensity suggest different underlying mechanisms, and what are the implications for models of accretion disk dynamics?

Observations spanning 48 hours in 2023 and 2024, in segments of eight to ten hours, revealed a dynamic, ever-changing light show. The accretion disk surrounding Sagittarius A* produced five to six major flares daily, along with numerous smaller ones, with no discernible pattern. This challenges existing models of black hole behavior and suggests a more complex interplay between the black hole and its surroundings.

nrc.nl

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Feb 12, 19:19

Highest-Energy Neutrino Detected, Opening New Window into Cosmic Phenomena

On February 13th, 2023, the KM3NeT neutrino detector in the Mediterranean Sea detected a 220 peta-electronvolt neutrino, the highest energy ever recorded, likely originating from a supermassive black hole or cosmic background radiation interaction, showcasing the potential of neutrino astronomy.

Highest-Energy Neutrino Detected, Opening New Window into Cosmic Phenomena

On February 13th, 2023, the KM3NeT neutrino detector in the Mediterranean Sea detected a 220 peta-electronvolt neutrino, the highest energy ever recorded, likely originating from a supermassive black hole or cosmic background radiation interaction, showcasing the potential of neutrino astronomy.

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What are the potential sources of this ultra-high-energy neutrino, and what challenges remain in identifying its origin?

The neutrino's trajectory, originating from outside our galaxy, suggests its creation near a supermassive black hole or through the interaction of accelerated atomic nuclei with cosmic background radiation. This discovery opens a new window into observing cosmic phenomena through neutrino detection.

dailymail.co.uk

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Dec 18, 19:11

Dormant Supermassive Black Hole Discovered in Early Universe

An international team used the James Webb Space Telescope to discover a supermassive black hole, 400 million times the mass of our Sun, in the early universe (800 million years after the Big Bang), currently in a dormant state, challenging existing black hole growth models.

Dormant Supermassive Black Hole Discovered in Early Universe

An international team used the James Webb Space Telescope to discover a supermassive black hole, 400 million times the mass of our Sun, in the early universe (800 million years after the Big Bang), currently in a dormant state, challenging existing black hole growth models.

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How does the discovery of this dormant black hole challenge existing models of black hole growth, and what alternative model is proposed?

This discovery challenges existing models of black hole development. The researchers propose that black holes experience short periods of rapid growth followed by extended dormancy, with this black hole potentially 'eating' for 5–10 million years and 'sleeping' for roughly 100 million years. This low-activity state explains its detection despite its immense size and the difficulty of observing dormant black holes.

Showing 1 to 8 of 8 results