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Optical counterpart of the gamma-ray burst detected by Ulysses, Mars Odyssey and BeppoSAX

Optical counterpart of the gamma-ray burst detected by Ulysses, Mars Odyssey and BeppoSAX


Copyright: M. Brown, R. Schommer, K. Olsen, B. Jannuzi, A. Dey (NOAO), A. Fruchter, J. Rhoads (STSci) AURA/NSF

The blue dot in the centre of this image (shown by the arrow) is the optical light signature of GRB011121, the gamma-ray burst detected by Ulysses, Mars Odyssey and BeppoSAX on 21 November 2001. The gamma-ray burst briefly appeared brighter than the rest of the Universe in gamma rays, before rapidly fading away.

This optical image, taken with the National Science Foundation's Blanco 4-meter telescope at Cerro Tololo Inter-American Observatory in Chile during the morning of 23 November 2001, shows the optical transient a day and a half after the initial burst. The transient had faded in brightness from its peak by more than a factor of 100 in that period of time. The reddish dot adjoining the gamma-ray burst, at its lower left, is probably the core of the galaxy in which the gamma-ray burst occurred.

M. Brown, R. Schommer, K. Olsen, B. Jannuzi, A. Dey (NOAO), A. Fruchter, J. Rhoads (STSci) AURA/NSF

Last Update: 1 September 2019
3-Jul-2022 09:34 UT

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