The unique dynamics of the tidal disruption of satellite galaxies is an extremely sensitive probe of longrange interactions between dark-matter particles. Dark-matter forces that are several percent the strength of gravity will lead to order unity changes in the ratio of the number of stars in the leading and trailing tidal streams of a satellite galaxy. The approximate symmetry of the stellar ...

Adding new value to Electromagnetic, Gravity and Magnetic Methods for Exploration Capri, Italy, April 11-14, 2010 The basalt geometry in the west siberian basin from satellite gravity, magnetics and seismics S. Ferrante(), C. Braitenberg (), J. Ebbing () () Dipartimento di Geoscienze, Università di Trieste, Trieste, Italy( ), Geological Survey of Norway (NGU), Trondheim, Norway, and Department...

Satellite data that are used to model the global gravity field of the Earth are typically corrupted by correlated noise, which can be related to a frequency dependence of the data accuracy. We show an opportunity to take such noise into account by using a proper noise covariance matrix in the estimation procedure. If the dependence of noise on frequency is not known a priori, it can be estimate...

The purpose of quick-look analysis in the framework of the GOCE data processing architecture is to analyse partial data sets of satellite gravity gradiometry (SGG) and satellite-to-satellite tracking in high-low mode (hl-SST), in order to derive a diagnosis of the system performance. The semi-analytic (SA) method for gravity field recovery from GOCE observations, which is based on Fast Fourier ...

Global models of the Earth’s gravitational field can be divided among three primary classes: satellite-only, combined and tailored models. Some of the current deficiencies in some of these models will be outlined using examples over Australia. The new dedicated satellite gravity field missions (e.g., GRACE, CHAMP and GOCE) will make significant improvements to the long-wavelength, satellite-der...

STARS-II is a pico-satellite which will launch by HIIA rocket of the Japan Aerospace Exploration Agency on 2013. The primary object of STARS-II is technical verification of tethered robotic system. STARS-II consists of Mother Satellite and Daughter Satellite connected by Electro Dynamic Tether. STARS-II has actuators in order to perform tether deployment and robotic mission. Main missions on ST...

[1] In this study, we estimate a time series of geocenter anomalies from a combination of data from the Gravity Recovery and Climate Experiment (GRACE) satellite mission and the output from oceanmodels. Amatrix equation is derived relating total geocenter variations to the GRACE coefficients of degrees two and higher and to the oceanic component of the degree one coefficients. We estimate the o...

Large regions of East Antarctica lack a reasonable topographic model because, until recently, only a few observations of ice thickness have been available to constrain the bedrock elevation. The acquisition of GRACE satellite gravity data has created a new opportunity to model the sub-ice topography. Here we have applied two methods for predicting topography based on the satellite data. Gravity...