Assessment of shallow landslide risk mitigation measures based on land use planning through probabilistic modelling   总被引：1，自引：0，他引：1  

Jorge Pedro Galve  Andrea Cevasco  Pierluigi Brandolini  Mauro Soldati 《Landslides》2015,12(1):101-114

  相似文献   

A Fundamental Plane of Black Hole Activity: Pushing Forward the Unification Scheme     

Andrea Merloni  Sebastian Heinz  Tiziana Di Matteo 《Astrophysics and Space Science》2005,300(1-3):45-53

We examine the disc-jet connection in stellar mass and supermassive black holes by investigating the properties of their compact emission in the hard X-ray and radio bands. We compile a sample of ∼100 active galactic nuclei with measured mass, 5 GHz core emission, and 2–10 keV luminosity, together with eight galactic black holes with a total of ∼50 simultaneous observations in the radio and X-ray bands. Using this sample, we study the correlations between the radio (L_R) and the X-ray (L_X) luminosity and the black hole mass (M). We find that the radio luminosity is correlated with both M and L_X, at a highly significant level. We show how this result can be used to extend the standard unification by orientation scheme to encompass unification by mass and accretion rate.  相似文献   

Dynamics of disk galaxies (invited review)     

Freeman  K. C. 《Astrophysics and Space Science》1986,118(1-2):337-342

Astrophysics and Space Science - In order to detect the gravitational effect of the dark corona component of disk galaxies, it is necessary to have surface photometry and rotation data that extend...  相似文献   

Radial distribution and strong lensing statistics of satellite galaxies and substructure using high-resolution ΛCDM hydrodynamical simulations     

Andrea V. Macciò  Ben Moore  Joachim Stadel  Jürg Diemand 《Monthly notices of the Royal Astronomical Society》2006,366(4):1529-1538

  相似文献   

K-band observations of boxy bulges – I. Morphology and surface brightness profiles     

M. Bureau  G. Aronica  E. Athanassoula  R.-J. Dettmar  A. Bosma  K. C. Freeman 《Monthly notices of the Royal Astronomical Society》2006,370(2):753-772

  相似文献   

Symmetries and Rank Deficiency in the Orbit Determination Around Another Planet   总被引：1，自引：0，他引：1  

Claudio Bonanno  Andrea Milani 《Celestial Mechanics and Dynamical Astronomy》2002,83(1-4):17-33

We study the possible degeneracies for the normal matrix of the observations from the Earth of the motion of a satellite around a planet, and give the possible solutions to the loss of precision in the orbit determination caused by the rank deficiency. Finally we discuss the methods available to control the instability in the orbit determination resulting from the degeneracy.  相似文献   

Instruments, Detectors and the Future of Astronomy with Large Ground Based Telescopes     

Douglas A. Simons  Paola Amico  Dietrich Baade  Sam Barden  Randall Campbell  Gert Finger  Kirk Gilmore  Roland Gredel  Paul Hickson  Steve Howell  Norbert Hubin  Andreas Kaufer  Ralf Kohley  Philip MacQueen  Sergej Markelov  Mike Merrill  Satoshi Miyazaki  Hidehiko Nakaya  Darragh O'Donoghue  Tino Oliva  Andrea Richichi  Derrick Salmon  Ricardo Schmidt  Hongjun Su  Simon Tulloch  Maria Luisa García Vargas  R. Mark Wagner  Olivier Wiecha  Binxun Ye 《Experimental Astronomy》2005,19(1-3):15-44

Results of a survey of instrumentation and detector systems, either currently deployed or planned for use at telescopes larger than 3.5 m, in ground based observatories world-wide, are presented. This survey revealed a number of instrumentation design trends at optical, near, and mid-infrared wavelengths. Some of the most prominent trends include the development of vastly larger optical detector systems (> 10⁹ pixels) than anything built to date, and the frequent use of mosaics of near-infrared detectors – something that was quite rare only a decade ago in astronomy. Some future science applications for detectors are then explored, in an attempt to build a bridge between current detectors and what will be needed to support the research ambitions of astronomers in the future.  相似文献   

Astrophysical Jet Simulations: Comparing Different Numerical Methods     

Andrea Mignone  Silvano Massaglia  Gianluigi Bodo 《Astrophysics and Space Science》2004,293(1-2):199-207

High resolution Godunov-type methods have gained increasing popularity in the last decade due to their ability in modelling highly supersonic flows. Most of these shock-capturing schemes are based on the solution of the Riemann problem between discontinuous data at each cell's interface. The purpose of this work is to investigate the role played by different Riemann solvers in the evolution of a supersonic jet. Morphology, dynamics, conservation properties and cocoon characteristics are examined for the four different cases presented.  相似文献   

Strong gravitational lensing and dynamical dark energy     

Andrea V. Macciò 《Monthly notices of the Royal Astronomical Society》2005,361(4):1250-1256

  相似文献   

First estimates of the fundamental parameters of the relatively bright Galactic open cluster NGC 5288     

Andrés E. Piatti  Juan J. Clariá  Andrea V. Ahumada 《Monthly notices of the Royal Astronomical Society》2006,367(2):599-610

  相似文献