منابع مشابه
Magnetars origin and progenitors with enhanced rotation
Among a dozen known magnetar-candidates there are no binary objects. As an estimate of a fraction of binary neutron stars is about 10% it is reasonable to address the question of solitarity of magnetars, to estimate theoretically the fraction of binary objects among them, and to mark out the most probable companions. We present population synthesis calculations of binary systems. Our goal is to...
متن کاملOrigin and hydrogeochemical evolution of Azarshahr travertine springs, NW Iran
1-Introduction Travertines are limestones that form where hot groundwaters rich in calcium and bicarbonate emerge at springs. Travertines cover a large area southwest of Azarshahr (East Azarbaijan province), in some parts of which active springs are currently settling travertine. One of the main questions about travertine springs is their origin, as well as the secondary processes that have ch...
متن کاملEvolution of the magnetic field in magnetars
We use numerical MHD to look at the stability of a possible poloidal field in neutron stars (Flowers & Ruderman 1977), and follow its unstable evolution, which leads to the complete decay of the field. We then model a neutron star after the formation of a solid crust of high conductivity. As the initial magnetic field we use the stable ‘twisted torus’ field which was the result of our earlier w...
متن کاملformation and evolution of regional organizations: the case study of the economic cooperation organization (eco)
abstract because of the many geopolitical, geo economical and geo strategically potentials and communicational capabilities of eco region, members can expand the convergence and the integration in base of this organization that have important impact on members development and expanding peace in international and regional level. based on quality analyzing of library findings and experts interv...
15 صفحه اولInvestigation of parent magma evolution and origin of chromites in Cheshmeh-Bid, Neyriz, Fars
: Cheshmeh-Bid chromite deposit is located in Nayriz ophiolite, 200 km northeast of Shiraz. The ophiolite sequences in this area are including ultramafic rocks (dunite, harzburgite, and pyroxenite). In this deposit, chromites are located in the mantle-crust transition zone and are enclosed by a dunite cover. Based on chemical studies of the major elements, chromite is depleted of Al and Ti elem...
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ژورنال
عنوان ژورنال: Monthly Notices of the Royal Astronomical Society: Letters
سال: 2008
ISSN: 1745-3925,1745-3933
DOI: 10.1111/j.1745-3933.2008.00527.x