3 ms·

Probable Caustic-Crossing Event in MACS1149 Galaxy Cluster Field

• linker3000 10y ago
  To the layman?
• techdragon 10y ago
  If you ignore the word "caustic", it mostly makes sense. Can anyone more knowledgeable in astronomy explain the meaning of "caustic" in this context?
  • DanBC 10y ago
    https://en.wikipedia.org/wiki/Caustic_(optics) https://en.wikipedia.org/wiki/Caustic_(optics) https://en.wikipedia.org/wiki/Gravitational_microlensing https://en.wikipedia.org/wiki/Gravitational_microlensing