The authors use an approximate analytic theory of a thick accretion disk to derive the thermodynamic conditions which prevail inside the disk as a function of the black hole mass, the viscosity parameter, and the accretion rate. From these thermodynamic conditions it is shown that, for a given mechanism for viscosity, the nuclear burning is substantially greater when the central black hole is less massive. The authors also perform a preliminary analysis of the main nuclear processes which can...| ADS
The radiative and particulate loss of mass by the Sun, -9.13*10^-14 Solar masses per year or more causes the orbits of the planets to expand at the same rate, and their periods to lengthen at twice this rate. Unfortunately, under the present definition of the Astronomical Unit (AU) based on the fixed Gaussian gravity constant kGS = 0.01720209895 (AU)^1.5/day, the value AUmet of the AU in meters must decrease at 1/3 this rate, all these rates being expressed logarithmically. The progress of th...| ADS
A powerful, streamlined new Astrophysics Data System| ui.adsabs.harvard.edu
We theoretically demonstrate that adding an easy-axis magnetic anisotropy facilitates magnon condensation in thin yttrium iron garnet (YIG) films. Dipolar interactions in a quasi-equilibrium state stabilize room-temperature magnon condensation in YIG. Even though the out-of-plane easy-axis anisotropy generally competes with the dipolar interactions, we show that adding such magnetic anisotropy may even assist the generation of the magnon condensate electrically via the spin-transfer torque me...| ADS
The Snake is a remarkable Galactic Centre radio filament with a morphology characterized by two kinks along its ~20 arcmin extent. The major and minor kinks are located where the filament is most distorted from a linear magnetized structure running perpendicular to the Galactic plane. We present Chandra, VLA, and MeerKAT data and report the detection of an X-ray and radio source at the location of the major kink. High-resolution radio images of the major kink reveal a compact source with a st...| ADS