Results 1 to 10 of about 12,791 (186)

Boosted Tidal Disruption by Massive Black Hole Binaries During Galaxy Mergers FROM The View of N-Body Simulation [PDF]

open access: yes, 2016
Supermassive black hole binaries (SMBHBs) are productions of the hierarchical galaxy formation model. There are many close connections between central SMBH and its host galaxy because the former plays very important roles on the formation and evolution ...
Berczik, Peter   +3 more
core   +3 more sources

Hybrid methods in planetesimal dynamics: Formation of protoplanetary systems and the mill condition [PDF]

open access: yes, 2013
The formation and evolution of protoplanetary discs remains a challenge from both a theoretical and numerical standpoint. In this work we first perform a series of tests of our new hybrid algorithm presented in Glaschke, Amaro-Seoane and Spurzem 2011 ...
Amaro-Seoane, Pau   +2 more
core   +3 more sources

Long Term Spectral Evolution of Tidal Disruption Candidates Selected by Strong Coronal Lines [PDF]

open access: yes, 2013
We present results of follow-up optical spectroscopic observations of seven rare, extreme coronal line emitting galaxies reported by Wang et al. (2012) with Multi-Mirror Telescope (MMT). Large variations in coronal lines are found in four objects, making
Ferland, Gary   +5 more
core   +3 more sources

Capital Flight versus Domestic Investment in Developing Countries: An Empirical Analysis from Nigeria [PDF]

open access: yes, 2012
Capital flight is a challenge for many developing countries of the world. The problem is more acute in a country like Nigeria where domestic investment has been severely affected.
Adetiloye, K. A.
core   +1 more source

A formal method for identifying distinct states of variability in time-varying sources: SgrA* as an example

open access: yes, 2014
Continuously time variable sources are often characterized by their power spectral density and flux distribution. These quantities can undergo dramatic changes over time if the underlying physical processes change. However, some changes can be subtle and
Ghez, A. M.   +3 more
core   +1 more source

Evolution of the surface magnetic field of rotating proto-neutron stars

open access: yes, 2017
We study the evolution of the field on the surface of proto-neutron stars in the immediate aftermath of stellar core collapse by analyzing the results of self-consistent, axisymmetric simulations of the cores of rapidly rotating high-mass stars.
Aloy, Miguel-Ángel   +1 more
core   +1 more source

Enhanced accretion rates of stars on Super-massive Black Holes by star-disk interactions in galactic nuclei

open access: yes, 2012
We investigate the dynamical interaction of a central star cluster surrounding a super-massive black hole and a central accretion disk. The dissipative force acting on stars in the disk leads to an enhanced mass flow towards the super-massive black hole ...
Andreas Just   +33 more
core   +1 more source

West Irondequoit Central School District and West Irondequoit Teachers Association [PDF]

open access: yes, 2014
In the matter of the fact-finding between the West Irondequoit Central School District, employer, and the West Irondequoit Teachers Association, union. PERB case no. M2013-095. Before: Stephen P.
LaLonde, Stephen P
core   +1 more source

Supermassive Black Holes in Galactic Nuclei with Tidal Disruption of Stars: Paper II - Axisymmetric Nuclei

open access: yes, 2015
Tidal Disruption of stars by supermassive central black holes from dense rotating star clusters is modelled by high-accuracy direct N-body simulation.
Berczik, Peter   +2 more
core   +1 more source

On the Influence of Minor Mergers on the Radial Abundance Gradient in Disks of Milky Way-like Galaxies

open access: yes, 2015
We investigate the influence of stellar migration caused by minor mergers (mass ratio from 1:70 to 1:8) on the radial distribution of chemical abundances in the disks of Milky Way-like galaxies during the last four Gyr.
Berczik, Peter   +4 more
core   +1 more source

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