In this study, the role of interaction of pi electrons on the strength of simultaneous σ-hole interactions (pnicogen, chalcogen and halogen bonds) is investigated using the quantum chemical calculations. X-ben||TAZ∙∙∙Y1,Y2,Y3 complexes (X = CN, F, Cl, Br, CH3 , OH and NH2, TAZ= s-triazine and Y1,Y2 and Y3 denotes PH2F, HSF, and ClF molecules) is introduced as a model. The results show that inte...

We argue that the velocity dispersions and masses of galactic bulges and spheroids are byproducts of the feedback that regulates rapid black hole growth in protogalaxies. We suggest that the feedback energy liberated by accretion must pass through the accreting material, in an energyconserving flux near the black hole and a momentum-conserving flux farther away from the black hole. If the inflo...

In classical loss cone theory, stars are supplied to a central black hole via gravitational scattering onto low angular momentum orbits. Higher feeding rates are possible if the gravitational potential near the black hole is non-axisymmetric and the orbits are chaotic. Motivated by recently published, self-consistent models, we evaluate rates of stellar capture and disruption in triaxial nuclei...

We consider a general, classical theory of gravity in n dimensions, arising from a diffeomorphism invariant Lagrangian. In any such theory, to each vector field, ξ, on spacetime one can associate a local symmetry and, hence, a Noether current (n− 1)-form, j, and (for solutions to the field equations) a Noether charge (n− 2)form, Q, both of which are locally constructed from ξ and the the fields...

Abstract The front cover artwork is provided by Tiddo J. Mooibroek. image shows the IsoStar distributions of carbonyl fragments around several σ‐ and π‐hole donors. Such analyses DFT calculations were used to assess utility σ‐/π‐hole interactions for crystal engineering. Read full text Article at 10.1002/cphc.202000927 .

We examine the evolution of the black hole mass stellar velocity dispersion (MBH−σ) relation over cosmic time using simulations of galaxy mergers that include feedback from supermassive black hole growth. Our calculations have been shown to reproduce the power-law scaling of the local, redshift zero MBH−σ relation and yield the observed normalization for an appropriate choice of the feedback ef...