منابع مشابه
N = 31, D = 11
We show that eleven-dimensional supergravity backgrounds with thirty one supersymmetries, N = 31, admit an additional Killing spinor and so they are locally isometric to maximally supersymmetric ones. This rules out the existence of simply connected eleven-dimensional supergravity preons. We also show that N = 15 solutions of type I supergravities are locally isometric to Minkowski spacetime. T...
متن کاملN body simulations of the nucleus of M 31
We test through stellar N-body simulations some scenarios to explain the dynamics of the peculiar nucleus of the Andromeda galaxy (M 31): although HST observations reveal a double nucleus morphology, the rotation field is almost symmetric around the bulge gravity centre and the velocity dispersion is off-centred. We show that any m = 1 perturbation has a very short lifetime (a few 10 5 yr). Ass...
متن کاملASTROPHYSICS N body simulations of the nucleus of M 31
We test through stellar N-body simulations some scenarios to explain the dynamics of the peculiar nucleus of the Andromeda galaxy (M 31): although HST observations reveal a double nucleus morphology, the rotation field is almost symmetric around the bulge gravity centre and the velocity dispersion is off-centred. We show that any m = 1 perturbation has a very short lifetime (a few 10 5 yr). Ass...
متن کاملEditorial 31 ( 5 ) : Special issue on educational design research ( EDR ) in post - secondary learning environments
Along with many ASCILITE members, we have grown increasingly concerned that current approaches to educational technology research lack value and practical application in the field. Educational design research (EDR) is an emerging approach that bridges the demand for rigorous research with the development of relevant solutions to educational problems. EDR is an intervention and process-oriented ...
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ژورنال
عنوان ژورنال: Via Atlântica
سال: 2017
ISSN: 2317-8086,1516-5159
DOI: 10.11606/va.v0i31.140907