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A team of astronomers using the Gemini South telescope, one half of the International Gemini Observatory operated by NSF’s NOIRLab, have observed the ‘brightest of all time’ long gamma-ray burst. Using the Gemini South Multi-Object Spectrograph (GMOS), the team found that although GRB 221009A exhibits a jet structure as rare as it is bright, its associated supernova is surprisingly ordinary.
Un equipo de astrónomos observó la explosión de rayos gamma “más brillante de todos los tiempos” con el telescopio Gemini Sur, la mitad austral del Observatorio Internacional Gemini que opera NOIRLab de NSF. Gracias al Espectrógrafo Multi Objetos de Gemini Sur (GMOS por sus siglas en inglés), el equipo descubrió que, a pesar que GRB 221009A presentaba una estructura de jet tan inusual como su brillo, su supernova no era nada fuera de lo común.
In a study published in Nature Astronomy today, a team of researchers from the University of Naples “Federico II”, the University of Wroclaw, and the University of Bergen examined a quantum-gravity model of particle propagation in which the speed of ultrarelativistic particles decreases with rising energy.
Matter outflows in the form of jets are observed in astronomical systems at fast, medium and slow speeds. The fastest jets are highly relativistic, namely travel very close to the speed of light. The origin, as well as many properties of the jets, is uncertain.
In the Dec. 7 issue of the journal Nature, an international team of astrophysicists report the discovery of a unique cosmological gamma-ray burst (GRB) that defies prevailing theories of how the violent cosmic explosions form.
A Northwestern University-led team of astronomers has developed the most extensive inventory to date of the galaxies where short gamma-ray bursts (SGRBs) originate.
In the early-morning hours of today, 14 October 2022, astronomers using the Gemini South telescope in Chile operated by NSF’s NOIRLab observed the unprecedented aftermath of one of the most powerful explosions ever recorded, Gamma-Ray Burst GRB221009A. This record-shattering event, which was first detected on 9 October 2022 by orbiting X-ray and gamma-ray telescopes, occurred 2.4 billion light-years from Earth and was likely triggered by a supernova explosion giving birth to a black hole.
More than 15 years after deep-space fast radio bursts were first discovered, their perplexing nature continues to surprise astronomers – and newly published research only deepens the mystery surrounding them.
Scientists using the Atacama Large Millimeter/submillimeter Array (ALMA) have for the first time recorded millimeter-wavelength light from a fiery explosion caused by the merger of a neutron star with another star.
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