The biggest explosion after the Big Bang may have been observed

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The biggest explosion after the Big Bang may have been observed

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In the early hours of October 14, 2022, astronomers using Chile’s Gemini South Telescope, operated by NSF’s NOIRLab, set a precedent for gamma-ray burst GRB221009A, one of the most powerful explosions ever recorded. observed no aftermath. First spotted by orbiting X-ray and gamma-ray telescopes on October 9, 2022, this record-breaking event occurred 2.4 billion light-years from Earth and was caused by a supernova explosion that created a black hole. may have been triggered.

The gigantic cosmic explosion has prompted astronomers worldwide to study the aftermath of the closest and possibly the most energetic gamma-ray burst (GRB) ever observed. triggered activity. Observations by two independent teams using Chile’s Gemini South Telescope (one of the twin telescopes at the International Gemini Observatory run by NSF’s NOIRLab) have just been published showing an explosion that may be a precursor to a black hole supernova. It was intended for the bright, glowing wreckage of

The GRB, identified as GRB 221009A, originated in the constellation Sagittarius about 2.4 billion light-years away. It was first discovered on the morning of October 9 by X-ray and gamma-ray space telescopes such as NASA’s Fermi Gamma-ray Space Telescope, Neil Gerrell’s Swift Observatory, and the Wind Spacecraft.

Rumors of the discovery spread so quickly that his two teams of astronomers worked closely with collaborators at Gemini South to observe the afterglow of this historic explosion as quickly as possible.

In the early hours of Friday, October 14, two Rapid Targets of Opportunity Imaging observations were made. ). Observations were made at intervals of several minutes. The first observations were made with the FLAMINGOS 2 instrument, a near-infrared imaging spectrometer. The other observation used the Gemini Multi-Object Spectrograph (GMOS).

The teams now have access to both datasets for their analyses of this energetic and evolving event.

“The exceptionally long GRB 221009A is the brightest GRB ever recorded and its afterglow is smashing all records at all wavelengths,” said O’Connor. “Because this burst is so bright and also nearby, we think this is a once-in-a-century opportunity to address some of the most fundamental questions regarding these explosions, from the formation of black holes to tests of dark matter models.”
Thanks to the fast reaction of observers and staff, combined with the use of Gemini Director’s Discretionary Time and efficient data-reduction software like Gemini’s DRAGONS “FIRE” (Fast Initial Reduction Engine), this image was quickly produced soon after the observations.

“The agility and responsiveness of Gemini’s infrastructure and staff are hallmarks of our observatory and have made our telescopes go-to resources for astronomers studying transient events,” said Gemini Chief Scientist Janice Lee.

Communications have already been sent to fellow astronomers through NASA’s gamma-ray coordinate network, whose archives are now filled with reports from around the world. Astronomers believe this represents the collapse of a star many times the mass of the Sun. This causes a very powerful supernova and creates a black hole he 2.4 billion light years away from Earth.

“Our research group calls this burst ‘BOAT,’ or the brightest burst ever, because it stands out when looking at the thousands of bursts that gamma-ray telescopes have detected since the 1990s. ” he said Rastinejad. “Gemini’s sensitivity and versatility of instrumentation help him observe the optical counterpart of GRB221009A at a time much later than most ground-based telescopes can observe. This is because this gamma-ray burst can reach this far.” It helps me understand why I’m so bright and energetic.”

When a black hole forms, a powerful beam of particles is propelled and accelerated to nearly the speed of light. These jets then penetrate the remnants of protostars, emitting X-rays and gamma rays that pour out into space. Pointed in the general direction of the Earth, these jets are observed as bright flashes of X-rays and gamma rays.

Another gamma-ray burst of this magnitude may not occur for decades or centuries, and the case is still developing. Of note are other anomalous reports of disturbances in the Earth’s ionosphere affecting long-wave radio transmissions due to energy emissions from Event GRB221009A. Scientists also believe that the extremely high-energy 18 TeV (tera-electronvolt) photons observed at China’s Large High Altitude Atmospheric Shower Observatory defy our standard understanding of physics and travel to Earth. I’m wondering how we can survive the 2.4 billion year journey of Given the relative proximity of this event to Earth, we can better understand the origin of elements heavier than iron and whether they all originate only from neutron star mergers or from stellar collapses that cause GRBs. It is also a unique opportunity to

“Gemini observations allow us to take full advantage of this nearby event and look for traces of heavy elements formed and ejected in massive stellar collapses,” O’Connor said.

Provided by NOIRLab

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