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== Discoveries == == Discoveries ==
* On 13 September 2008, ] detected gamma-ray burst ]. GROND and ] subsequently placed the GRB at 12.8 ] distant, making it the most-distant GRB observed, as well as the second-most-distant object to be ] confirmed.<ref>{{cite press release * On 13 September 2008, ] detected gamma-ray burst ]. GROND and ] subsequently placed the GRB at 12.8 ] distant, making it the most-distant GRB observed, as well as the second-most-distant object to be ] confirmed.<ref>{{cite press release
| title = NASA's Swift Catches Farthest Ever Gamma-Ray Burst | title = NASA's Swift Catches Farthest Ever Gamma-Ray Burst
| publisher = ] | publisher = ]

Revision as of 06:43, 2 July 2012

"Grond" redirects here. For Grond, the fictional battering ram from J. R. R. Tolkien's legendarium, see the List of Middle-earth Weapons and Armour.
"A photograph of the GROND instrument"
The GROND instrument mounted on the 2.2m telescope at the La Silla Observatory (lower left corner, blue cylinder).

The Gamma-Ray Burst Optical/Near-Infrared Detector (GROND) is an imaging instrument used to investigate Gamma-Ray Burst afterglows. It is operated at the MPI/ESO 2.2m telescope at the La Silla Observatory.

Discoveries

  • On 13 September 2008, Swift detected gamma-ray burst 080913. GROND and VLT subsequently placed the GRB at 12.8 Gly distant, making it the most-distant GRB observed, as well as the second-most-distant object to be spectroscopically confirmed.
  • On 15 September 2008, NASA's Fermi Gamma-ray Space Telescope detected gamma-ray burst 080916C. On 19 February 2009, NASA announced that the GROND team's work shows that the GRB was the most energetic yet observed, and 12.2 Gly distant.

See also

Notes


References

  1. "GROND Takes Off" (Press release). European Organisation for Astronomical Research in the Southern Hemisphere (ESO). 2007-07-06. Retrieved 2009-02-23.
  2. "NASA's Swift Catches Farthest Ever Gamma-Ray Burst" (Press release). NASA. 2008-09-19. Retrieved 2009-02-23.
  3. Greiner, Jochen (2008-10-13). "GRB 080913 at redshift 6.7". arXiv:0810.2314. {{cite arXiv}}: Unknown parameter |coauthors= ignored (|author= suggested) (help)
  4. "NASA's Fermi Telescope Sees Most Extreme Gamma-ray Blast Yet" (Press release). NASA. 2009-02-19. Retrieved 2009-02-23.
  5. Greiner, Jochen (2009-02-04). "The redshift and afterglow of the extremely energetic gamma-ray burst GRB 080916C". arXiv:0902.0761. {{cite arXiv}}: Unknown parameter |coauthors= ignored (|author= suggested) (help)

External links


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