In our previous paper, we employed the Landau collisional operator together with the moment method of Grad and considered various generalizations of the...

We show that a wide variety of processes lead, in certain limit, to a simple generalization of the negative binomial distribution. Its properties are studied in...

We consider a generalized statistical mechanics model for the creation process of cosmic rays which takes into account local temperature fluctuations. This...

The physics of recombination lines in the He I singlet system is expected to be relatively simple, supported by accurate atomic models. We examine the...

A new method is developed to calculate the amplitude of the galactic warps generated by a torque due to external forces. This takes into account that the warp...

Context. Solar jets are collimated plasma flows moving along magnetic field lines and are accelerated at low altitude following magnetic reconnection. Several...

Crater morphology and surface age of asteroid (162173) Ryugu are characterized using the high-resolution images obtained by the Hayabusa2 spacecraft. Our...

We present evidence of Fe fluorescent emission in the Chandra HETGS spectrum of the single G-type giant HR 9024 during a large flare. In analogy to solar X-ray...

Draco C1 is a known symbiotic binary star system composed of a carbon red giant and a hot, compact companion—likely a white dwarf—belonging to the Draco dwarf...