9 research outputs found
On the cosmological singularity
The long story of the oscillatory approach to the initial cosmological
singularity and its more recent incarnation in multidimensional universe models
is told.Comment: The invited paper for Proceedings of the XIII Marcel Grossmann
Meeting (Stockholm, 2012) by reason of the Marcel Grossmann Award to V.A.
Belinski and I.M. Khalatniko
On the integrable gravity coupled to fermions
In the present letter we indicate an extension of the pure gravity inverse
scattering integration technique to the case when fermions (introduced on the
base of supersymmetry) are present. In this way the integrability technique for
simple () supergravity in two space-time dimensions coupled to the matter
fields taking values in the Lie algebra of group is
developed. This theory contains matter living only in one Weyl representation
of and represents the reduction to two dimensions of the
three-dimensional simple supergravity constructed in [1].
Our spectral linear problem use superspace and covers the complete set of
principal bosonic and fermionic equations of motion. This linear system, as in
pure gravity, contains only the first order poles with respect to the spectral
parameter. The procedure of constructing the exact super-solitonic solutions is
outlined.Comment: Version 1611.02924v1 was withdrawn due to groundless assumption on
the existence of the relation (43). In footnote 7 it was stressed that its
proof remains to be seen. Analysis showed that such relation indeed is
doubtful. Then the extension of the pure gravity inverse scattering method to
superspace surely can cover only the simple integrable supergravity with
E8(8) symmetr
Robotic optical telescopes global network MASTER II. Equipment, structure, algorithms
Presented paper describes the basic principles and features of the implementation of a robotic network of optical telescopes MASTER, designed to study the prompt (simultaneous with gamma radiation) optical emission of gamma-ray bursts and to perform the sky survey to detect unknown objects and transient phenomena. With joint efforts of Sternberg astronomical institute, High altitude astronomical station of the Pulkovo observatory, Ural state university, Irkutsk state university, Blagoveshchensk pedagogical university, the robotic telescopes MASTER II near Kislovodsk, Yekaterinburg, Irkutsk and Blagoveshchensk were installed and tested. The network spread over the longitudes is greater than 6 h. A further expansion of the network is considered. © 2011 Springer Science+Business Media B.V
EXPLANATION: Exoplanet and Transient Event Investigation Project—Optical Facilities and Solutions
Over the past decades, the achievements in astronomical instrumentation have given rise to a number of novel advanced studies related to the analysis of large arrays of observational data. One of the most famous of these studies is a study of transient events in the near and far space and a search for exoplanets. The main requirements for such kinds of projects are a simultaneous coverage of the largest possible field of view with the highest possible detection limits and temporal resolution. In this study, we present a similar project aimed at creating an extensive, continuously updated survey of transient events and exoplanets. To date, the core of the project incorporates several 0.07–2.5 m optical telescopes and the 6-m BTA telescope of the Special Astrophysical Observatory of RAS (Russia), a number of other Russian observatories and the Bonhyunsan observatory of the Korea Astronomy and Space Science Institute (South Korea). Our attention is mainly focused on the description of two groups of small, wide-angle optical telescopes for primary detection. All the telescopes are originally designed for the goals of the project and may be of interest to the scientific community. A description is also given for a new, high-precision optical spectrograph for the Doppler studies of transient and exoplanet events detected within the project. We present here the philosophy, expectations and first results obtained during the first year of running the project