- November 2, 2009
- 01:26 AM
- 318 views
Most Distant Known Object In The Universe
by Charles Daney in Science and Reason
On April 23 of this year the Swift Gamma-Ray Burst Telescope detected, just as it was designed to do, a gamma-ray burst (GRB). Within less than a day two of the most powerful Earth-based telescopes had begun studying the quickly fading light of the object, known as GRB 090423. (There were other observatories investigating it as well.)Because the light from GRBs fades so rapidly, most such objects are detected from space-based instruments that are especially designed for the purpose, like Swift. ........ Read more »
Tanvir, N., Fox, D., Levan, A., Berger, E., Wiersema, K., Fynbo, J., Cucchiara, A., Krühler, T., Gehrels, N., Bloom, J.... (2009) A γ-ray burst at a redshift of z ≈ 8.2. Nature, 461(7268), 1254-1257. DOI: 10.1038/nature08459
Salvaterra, R., Valle, M., Campana, S., Chincarini, G., Covino, S., D’Avanzo, P., Fernández-Soto, A., Guidorzi, C., Mannucci, F., Margutti, R.... (2009) GRB 090423 at a redshift of z ≈ 8.1. Nature, 461(7268), 1258-1260. DOI: 10.1038/nature08445
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