With Carlip’s boundary conditions, a standard Virasoro subalgebra with corresponding central charge for static dilaton black hole obtained in the low-energy effective field theory describing string is constructed at a Killing horizon. The statistical entropies of the Garfinkle-Horowitz-Strominger dilaton black hole and the Gibbons-Maeda dilaton black hole yielded by standard Cardy formula agree...

predictions of the black-hole growth of SMGs and quasars. What was the catalyst for the rapid black-hole and stellar growth seen in SMGs? Rest-frame ultraviolet images taken by the Hubble Space Telescope have shown that a considerably larger fraction of SMGs are in major mergers (that is, the merging of two galaxies of comparable masses) than has been found in the coeval galaxy population. Hydr...

[1] In Deep Sea Drilling Program (DSDP) Hole 417D in the western central North Atlantic, dips of pillow margins measured in the upper and lower part of basement correlate with tilts predicted from paleomagnetic inclinations in the corresponding parts of the hole. A 40 westward dip of the seafloor around 417Dmatches the tilt predicted from inclinations and pillow margin dips in the uppermost lav...

Water oxidation is a key chemical reaction, central to both biological photosynthesis and artificial solar fuel synthesis strategies. Despite recent progress on the structure of the natural catalytic site, and on inorganic catalyst function, determining the mechanistic details of this multiredox reaction remains a significant challenge. We report herein a rate law analysis of the order of water...

Purpose. To report a patient who experienced visual field loss progression after vitrectomy for an idiopathic stage II macular hole. Methods. Case report. A 68-year-old woman, with no history of glaucoma or any neuroophthalmological diseases, underwent a vitrectomy for a macular hole. Results. The patient showed macular hole closure and a resulting central visual acuity of 20/20. However, two m...

In the presence of compact dimensions massive solutions of General Relativity may take one of several forms including the black-hole and the black-string, the simplest relevant background being R3+1 × S. It is shown how Morse theory places constraints on the qualitative features of the phase diagram, and a minimalistic diagram is suggested which describes a first order transition whose only sta...

We propose a new model for the disk-jet connection in black hole x-ray transients and active galactic nuclei. In our model, the inner part of the accretion disk around the central black hole switches between two states. In one state, the accretion energy is dissipated locally (some within the disk, some within a corona) to produce the observed disk luminosity. In the second state, the accretion...

Assuming Active Galactic Nuclei are powered by accretion onto a massive black hole we suggest that the growth of the central black hole mass due to the matter accreted over the AGN lifetime causes evolution of the luminosity and spectrum. We show that the effective temperature of the UV continuum spectrum is likely to be anti-correlated with the black hole mass and with the luminosity. We estim...

We suggest that the growth of the central black hole in active galactic nuclei (AGN) due to the matter accreted over the AGN lifetime causes an evolution of the luminosity and spectrum. In a previous paper we have shown that the effective temperature of the UV continuum spectrum and the emission-lineequivalent width are anti-correlated with the black-hole mass. Here we estimate the change in th...

using piezoelectric patches the stress concentration around a hole on a plate under tension is reduced and controlled. to attain the reduction in stress two placements for piezoelectric patches is investigated. the first location is top/bottom of the hole with compression induced strain and the second is left/right of the hole with tension induced strains to control the stress flow. the result ...