We present post-Newtonian N -body simulations on mergers of accreting stellarmass black holes (BHs), where such general relativistic effects as the pericentre shift and gravitational wave emission are taken into consideration. To elucidate the key physics that regulates mergers of BHs, the dynamical friction and the mass accretion by ambient gas are incorporated. We consider a system composed o...

We investigate the Hawking radiation of black p-branes of superstring theories using the method of anomaly cancelation, specially, we use the method of [S. Iso, H. Umetsu and F. Wilczek, Phys. Rev. Lett. 96, 151302 (2006); Phys. Rev. D 74, 044017 (2006)]. The metrics of black p-branes are spherically symmetric, but not the Schwarzschild type. In order to simplify the calculation, we first make ...

Formation of primordial black holes (PBHs) on astrophysical mass scales is a natural consequence of inflationary cosmology if the primordial perturbation spectrum has a large and negative running of the spectral index as observationally suggested today, because double inflation is required to explain it and fluctuations on some astrophysical scales are enhanced in the field oscillation regime i...

Female decision rules can influence the nature and intensity of sexual selection on males, but empirical demonstrations of rules underlying choice are rare. We hypothesized that female choice is largely based on a courtship duration threshold in the Australian redback spider (Latrodectus hasselti) because females kill males before copulation is complete (premature cannibalism) and reduce their ...

Thermal Wightman functions of a massless scalar field are studied within the framework of a “near horizon” static background model of an extremal R-N black hole. This model is built up by using global Carter-like coordinates over an infinite set of Bertotti-Robinson submanifolds glued together. The analytical extendibility beyond the horizon is imposed as constraints on (thermal) Wightman’s fun...

In contrast, Hoby’s record of her detailed but subjectively opaque daily activities anxiously measures her distance from a template of a well-lived Christian life. In Clifford’s diary, worldly affairs outshine the spiritual events, and, unlike Mildmay and Hoby, she often considers her spiritual life only in reaction to her secular troubles. The final chapter on women’s wills similarly comprises...

In a recent paper we have shown that the evolution of a misaligned disc around a spinning black hole can result in tearing the disc into many distinct planes. Tearing discs with random orientations produce direct dynamical accretion on to the hole in ≈ 70% of all cases. Here we examine the evolution of a misaligned disc around a binary system. We show that these discs are susceptible to tearing...

We investigate here antecedents and consequences of supplier integration (black-box and gray-box) in product development activities. Antecedents include embeddedness with suppliers, supply base rationalization, and supplier selection based on product development capabilities. Product innovation and quality are modeled as returns of supplier integration in product development. We also assess the...

We present exact spherically symmetric dyonic black hole solutions in fourdimensional and higher dimensional Einstein-Maxwell-dilaton gravity with Liouvilletype potentials for the dilaton field. These solutions have unusual asymptotics–they are neither asymptotically flat nor asymptotically (anti-) de Sitter. The solutions have one or two horizons hiding a curvature singularity at the origin. A...

Volcanic activity on the island of Hawaii results in a cyclical pattern of habitat destruction and fragmentation by lava, followed by habitat regeneration on newly formed substrates. While this pattern has been hypothesized to promote the diversification of Hawaiian lineages, there have been few attempts to link geological processes to measurable changes in population structure. We investigated...