Beecroft Institute for Particle Astrophysics and Cosmology

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Evidence for orbital motion of material close to the central black hole of Mrk 766

Astronomy and Astrophysics 445 (2006) 59-67

Authors:

L Miller, Turner, T.J., George, I.M., Reeves, J.N.
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Large Scale Structure in Bekenstein's Theory of Relativistic Modified Newtonian Dynamics

Physical Review Letters 96 (2006) 011301 4pp

Authors:

P Ferreira, C. Skordis, C. Boehm, D. Mota
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Mining Approximate Motifs in Time Series

Chapter in Discovery Science, Springer Nature 4265 (2006) 89-101

Authors:

Pedro G Ferreira, Paulo J Azevedo, Cândida G Silva, Rui MM Brito
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Measuring the Geometry of the Universe in the Presence of Isocurvature Modes

Physical Review Letters 95:26 (2005) 261303 4pp

Authors:

J Dunkley, Martin Bucher, Pedro Ferreira, Kavilan Moodley
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Formation of structure in molecular clouds: A case study

Astrophysical Journal 633:2 II (2005)

Authors:

F Heitsch, A Burkert, LW Hartmann, AD Slyz, JEG Devriendt

Abstract:

Molecular clouds (MCs) are highly structured and turbulent. Colliding gas streams of atomic hydrogen have been suggested as a possible source of MCs, imprinting the filamentary structure as a consequence of dynamical and thermal instabilities. We present a two-dimensional numerical analysis of MC formation via converging H I flows. Even with modest flow speeds and completely uniform inflows, nonlinear density perturbations arise as possible precursors of MCs. Thus, we suggest that MCs are inevitably formed with substantial structure, e.g., strong density and velocity fluctuations, which provide the initial conditions for subsequent gravitational collapse and star formation in a variety of Galactic and extragalactic environments. © 2005. The American Astronomical Society. All rights reserved.
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