GRB 090423
GRB 090429B (även GRB 090423A, GRB 090423) var en gammablixt som observerades 2009 i stjärnbilden Lejonet, med hjälp av Swiftteleskopet. Det är den mest avlägsna kända gammablixt som observerats hittills och var belägen på cirka 13 miljarder ljusårs avstånd från Jorden.[1][2] Gammablixten hade en rödförskjutning på 8,2[3] och upptäcktes i infrarött ljus.
Källor
- ^ ”NASA - New Gamma-Ray Burst Smashes Cosmic Distance Record” (på engelska). www.nasa.gov. 28 april 2009. Arkiverad från originalet den 16 maj 2020. https://web.archive.org/web/20200516225734/https://www.nasa.gov/mission_pages/swift/bursts/cosmic_record.html. Läst 20 februari 2023.
- ^ Atkinson, Nancy (28 oktober 2009). ”More Observations of GRB 090423, the Most Distant Known Object in the Universe” (på amerikansk engelska). Universe Today. https://www.universetoday.com/43517/more-observations-of-grb-090423-the-most-distant-known-object-in-the-universe/. Läst 20 februari 2023.
- ^ ”APOD: 2009 April 29 - GRB 090423: The Farthest Explosion Yet Measured”. apod.nasa.gov. 29 april 2009. https://apod.nasa.gov/apod/ap090429.html. Läst 20 februari 2023.
Media som används på denna webbplats
Artist’s impression of a gamma-ray burst.jpg
Författare/Upphovsman: ESO/A. Roquette, Licens: CC BY 4.0
Artist’s impression of a gamma-ray burst. Gamma-ray bursts (GRBs) are powerful flashes of energetic gamma-rays lasting from less than a second to several minutes. They release a tremendous amount of energy in this short time making them the most powerful events in the Universe. They are thought to be mostly associated with the explosion of stars that collapse into black holes. In the explosion, two jets of very fast-moving material are ejected, as depicted in this artist’s illustration. If a jet happens to be aimed at Earth, we see a brief but powerful gamma-ray burst.
Författare/Upphovsman: ESO/A. Roquette, Licens: CC BY 4.0
Artist’s impression of a gamma-ray burst. Gamma-ray bursts (GRBs) are powerful flashes of energetic gamma-rays lasting from less than a second to several minutes. They release a tremendous amount of energy in this short time making them the most powerful events in the Universe. They are thought to be mostly associated with the explosion of stars that collapse into black holes. In the explosion, two jets of very fast-moving material are ejected, as depicted in this artist’s illustration. If a jet happens to be aimed at Earth, we see a brief but powerful gamma-ray burst.