Lasing of a cavity-based X-ray source
Shortly after the free-electron laser (FEL) concept was proposed in the 1970s11, the first FEL oscillator was developed12…
Coherent nonlinear X-ray four-photon interaction with core-shell electrons
Mukamel, S., Healion, D., Zhang, Y. & Biggs, J. D. Multidimensional attosecond resonant X-ray spectroscopy of molecules: lessons…
Record-Breaking Cosmic Burst Caused by Stellar-Mass Black Hole Shredding Its Companion
Using data gathered by a suite of space- and ground-based telescopes, astronomers have discovered AT 2024wpp, the most…
XMM-Newton Offers Incredible X-ray View of Interstellar Comet 3I/ATLAS
Astronomers using ESA’s XMM-Newton observatory have captured an X-ray image of 3I/ATLAS, the third confirmed interstellar object to…
Self-compressed waveform-stable light transients enabling water-window attosecond spectroscopy
We first demonstrate the creation and field-resolved characterization of light transients, focusing on generating sub-cycle pulses. For this…
What happens when you cross the point of no return?
Black holes form when massive stars exhaust their nuclear fuel and collapse under their own gravity. This collapse…
Intermediate-Mass Black Hole Caught Eating Star in NGC 6099
The newly-discovered intermediate-mass black hole, named NGC 6099 HLX-1, resides in a compact star cluster on the outskirts…
Physicists Blow Up Gold With Giant Lasers, Accidentally Disprove Renowned Physics Model
Scientists equipped with giant lasers have blown up gold at SLAC National Accelerator Laboratory, heating it to 14…