Artist’s impression of a gamma-ray burst shining through two young galaxies in the early Universe

This artist’s impression shows two galaxies in the early Universe. The brilliant explosion on the left is a gamma-ray burst. As the light from the burst passes through the two galaxies  on the way to Earth (outside the frame to the right) some colours are absorbed by the cool gas in the galaxies, leaving characteristic dark lines in the spectrum. Careful study of these spectra has allowed astronomers to discover that these two galaxies are remarkably rich in heavier chemical elements.

Crediti:

ESO/L. Calçada

A proposito dell'immagine

Identificazione:eso1143b
Tipo:Illustrazione
Data di pubblicazione:Mercoledì 02 Novembre 2011 12:00
Notizie relative:eso1143
Dimensione:3258 x 2443 px

A proposito delll'oggetto

Nome:GRB 090323, Spectrum
Tipo:Early Universe : Cosmology : Phenomenon : Gamma Ray Burst
Distanza:z=3.57 (redshift (spostamento verso il rosso))
Categoria:Cosmology
Illustrations

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