Two-dimensional Fourier transform electronic spectra were recorded for the LH3 light harvesting complex. The spectra reveal the weak coupling between B800 molecules, the ultrafast dynamics within B820 and energy flow from B800 to B850.

Aims. We aim to constrain the acceleration, injection, and transport processes of flare-accelerated energetic electrons by comparing their characteristics at Sun with those injected into interplanetary space. Methods. have identified 17 electron events well-observed SEPT instrument aboard STEREO which show a clear association hard X-ray (HXR) flare observed RHESSI spacecraft. compare spectral i...

Axion particles are among the best candidates to explain dark matter and resolve strong $CP$ problem in Standard Model. If such a particle exists, core of stars will produce them large amounts. For first time, we predict axion spectra their associated luminosities for several low-mass stars---one two solar masses main sequence post-main stages evolution. Equally, also compute x-ray excess emiss...