🔬 Discovery

Quasars (3C 273)

Cuásares (3C 273) como objetos a distancias cosmológicas

Date
1963 · confidence high
Place
Palomar Observatory, California, United States
Credited to
Maarten Schmidt (position: Cyril Hazard, Parkes)
People
👤 Maarten Schmidt1929–2022
Field
Cosmos & Earth

What was discovered

Schmidt recognised that the strange lines of 3C 273 were those of hydrogen redshifted by 16%: a small, extremely distant object with the luminosity of hundreds of galaxies, powered by a supermassive black hole.

The precise position was obtained by lunar occultation with the Parkes radio telescope (Australia).

What it led to

  • Active galactic nuclei
  • Evidence for supermassive black holes
  • Surveying the distant universe and the intergalactic medium
🕸️ View in the graph

Built on

Made possible

📄 Original publication

3C 273 : A Star-Like Object with Large Red-ShiftMaarten Schmidt · Nature · 1963

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