Hungry monster: here’s how a black hole ‘turned on’ and started eating stars in our universe

Scientists from the Universities of Birmingham, London and Belfast make a surprising sighting of a black hole “Highly Critical Activation Event.”

Astronomer Dr Samantha Oates from the University of Birmingham and her research team made the remarkable discovery of an extremely luminous transient object named ‘J221951’. Transients are astrophysical entities that exhibit rapid changes in their brightness over short time intervals.

Using the Neil Gehrels Swift Observatory’s ultra-violet and optical telescopes, the team’s goal was to detect a kilonova – a phenomenon that indicates the merger of two neutron stars or a neutron star with a black hole.

Typically, a kilonova initially exhibits a blue color, after which it gradually fades and turns red over a few days. However, their observations led to a highly unexpected discovery: J221951.

See also: Spectacular Webb Telescope image reveals things scientists can’t explain

This transient object displayed a blue color, but contrary to expectations, it did not change color or fade as rapidly as a kilonova usually does.

Through the use of the Hubble Space Telescope, a spectrum analysis of J221951 was performed, thereby excluding any connection between J221951 and the gravitational wave phenomenon.

By closely examining the light spectrum emitted by J221951, Dr. Oates and his team concluded that the source is located approximately 10 billion light-years away, in sharp contrast to the gravitational wave signal that is detected at a distance of less than 0.5 billion light-years. I went. ,

Available evidence indicates that J221951 originated from the rapid accretion of surrounding material by a supermassive black hole. Prior to its discovery, a red galaxy was observed in the same region where J221951 is located, and J221951’s position is aligned with the central region of the Milky Way.

This alignment is consistent with the presence of a supermassive black hole, which is commonly found at the center of galaxies.

According to the paper, J221951 is considered one of the most luminous transient objects ever observed.

A sudden and rapid increase in the brightness of the black hole in question was observed, which began to brighten suddenly about 10 months before its initial detection. This suggests that the black hole had to go through a period of silence before it started accreting matter at an extremely accelerated rate.

See also: Hubble telescope captures amazing view of nearest neighbor of galaxy 11 million light-years away

Analysis of the ultraviolet spectrum revealed absorption features that align with outward movement of the material due to the forceful release of energy.

Together with its significant luminosity, this event represents one of the most remarkable examples of a black hole transitioning from a passive state to an active state.

Cover Image: Image Credit: ESO/M. kornmesser

Scientists from the Universities of Birmingham, London and Belfast make a surprising sighting of a black hole “Highly Critical Activation Event.”

Astronomer Dr Samantha Oates from the University of Birmingham and her research team made the remarkable discovery of an extremely luminous transient object named ‘J221951’. Transients are astrophysical entities that exhibit rapid changes in their brightness over short time intervals.

Using the Neil Gehrels Swift Observatory’s ultra-violet and optical telescopes, the team’s goal was to detect a kilonova – a phenomenon that indicates the merger of two neutron stars or a neutron star with a black hole.

Typically, a kilonova initially exhibits a blue color, after which it gradually fades and turns red over a few days. However, their observations led to a highly unexpected discovery: J221951.

See also: Spectacular Webb Telescope image reveals things scientists can’t explain

This transient object displayed a blue color, but contrary to expectations, it did not change color or fade as rapidly as a kilonova usually does.

Through the use of the Hubble Space Telescope, a spectrum analysis of J221951 was performed, thereby excluding any connection between J221951 and the gravitational wave phenomenon.

By closely examining the light spectrum emitted by J221951, Dr. Oates and his team concluded that the source is located approximately 10 billion light-years away, in sharp contrast to the gravitational wave signal that is detected at a distance of less than 0.5 billion light-years. I went. ,

Available evidence indicates that J221951 originated from the rapid accretion of surrounding material by a supermassive black hole. Prior to its discovery, a red galaxy was observed in the same region where J221951 is located, and J221951’s position is aligned with the central region of the Milky Way.

This alignment is consistent with the presence of a supermassive black hole, which is commonly found at the center of galaxies.

According to the paper, J221951 is considered one of the most luminous transient objects ever observed.

A sudden and rapid increase in the brightness of the black hole in question was observed, which began to brighten suddenly about 10 months before its initial detection. This suggests that the black hole had to go through a period of silence before it started accreting matter at an extremely accelerated rate.

See also: Hubble telescope captures amazing view of nearest neighbor of galaxy 11 million light-years away

Analysis of the ultraviolet spectrum revealed absorption features that align with outward movement of the material due to the forceful release of energy.

Together with its significant luminosity, this event represents one of the most remarkable examples of a black hole transitioning from a passive state to an active state.

Cover Image: Image Credit: ESO/M. kornmesser