Using a combination of telescopes, astronomers have characterized the closest supernova linked to a fast X-ray transient. The ...

A development of high-resolution X-ray microscope with a new type of field emission electron source is now in progress. The X-ray microscope is equipped with a lithium liquid metal electron source (Li ...

Astronomers from the University of Turku in Finland and elsewhere have performed a broadband spectral and timing study of an ...

A simple expression for the noise in the photocurrent generated by the detection of light from an ideal superluminescent source is derived using a quantum amplifier model. The excess noise factor X is ...

NASA's Chandra X-ray Observatory provides a new look at the Andromeda galaxy in this multi-wavelength image that includes ...

This work establishes the ability of valence-to-core X-ray emission spectroscopy (XES) to serve as a direct probe of N2 bond activation. A systematic series of iron-N2 complexes has been ...

The identification of ligands in metalloorganic complexes is crucial for understanding many important biological and chemical systems. Nonresonant Kβ valence-to-core X-ray emission spectroscopy (XES) ...

Letter Published: 15 June 1929 Emission Lines in the Spectrum of the Solar Corona W. ZESSEWITSCH & W. NIKONOW Nature 123, 909–910 (1929) Cite this article ...