Rajesh Karmakar

Two cosmic mysteries—the excess of radio waves in the sky (ARCADE2) and the anomalously weak signal from the earliest hydrogen (EDGES)—have received a common explanation. The culprit could be axions, ultralight dark matter particles. In primordial magnetic fields, axions turn into radio waves, creat

By numerically investigating the scattering of scalar waves on a rotating traversable wormhole, scientists discovered Breit-Wigner resonances. They sharply intensify under fast rotation and for counter-rotating modes, creating a spectral fingerprint radically different from that of black holes—a sig