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Euclid telescope spots rare 'Einstein ring' hiding near Earth — and an ancient, unnamed galaxy behind it
Einstein predicted the existence of gravitationally-warped rings of light in 1915. Now, a new one has been discovered just a ...
New Scientist2d
Stunning image shows the closest ever Einstein ring
Albert Einstein himself thought that the eponymous Einstein ring would be impossible to observe, but the Euclid telescope has ...
Einstein Was Right – Euclid Just Captured Space-Time Warping in a Perfect Cosmic Ring
Euclid, a space telescope on a mission to uncover the secrets of dark matter and dark energy, has already made a stunning ...
Scientific Research Publishing21d
Raffelt, G.G. (1990) Astrophysical Methods to Constrain Axions and Other Novel Particle Phenomena. Physics Reports, 198, 1-113.
We predict a photon flux, which may be detectable by Fermi LAT, and limits on the QCD mass m a . In this model, axions decay to gamma rays in a 2-photon vertex. We may determine the expected fluxes ...
Investopedia26d
Gamma-Delta Neutral Option Spreads
The gamma-delta neutral spread may be the best middle ground when searching for a way to exploit time decay while neutralizing the effect of price actions on your position's value. In this article ...