Dimitri ZVONKINE (Paris-7 Jussieu): Models of 2-dimensional gravity and enumeration of ramified coverings of the sphere . We explain why the enumeration of ramified coverings of the sphere provides a model of 2-dimensional gravity. ... We also prove some combinatorial results concerning ramified coverings of the sphere. ... It appears naturally in elementary graph enumeration problems, in the intersection theory on moduli spaces of stable curves, and in the enumeration of ramified coverings. ...

Seven months ago, on Mar 19, 2008, at 09:12 Moscow time, a new star appeared on the sky. The Sun had already risen over the Russia, but people of the Western hemisphere might be able to see by their eyes a faint starlet near one of Bootes constellation stars. This starlet appeared and faded by an order of magnitude in a minute. Astronomers named it GRB080319B or, informally, the Naked-Eye Burst, as it was twice as bright as human eye can see a star. ... Royal Astronomical Society . ...

... Astrophysics Group . ... FIRST . ... This site is an initiative by MRAO Cambridge to provide improved access for the UK to the images being produced from the FIRST survey. ... Note that a small image returned by this server will have different gridding and orientation from an image of corresponding position and size returned by the FIRST CUTOUT server at the main site. ... This site may evolve to provide more of the facilities available at the FIRST main site in due course. ...

Wednesday, February 15th, 2012 . ... Monday, February 13th, 2012 . ... Сделать это можно использую Map Tools проекта SOPAC (http://sopac NULL .ucsd NULL .edu/maps/) . ... Wednesday, February 8th, 2012 . ... You are currently browsing the Лаборатория лазерной интерферометрии blog archives for February, 2012. ... Наши публикации . ... Публикации за 2010 . Публикации за 2011 . Публикации за 2012 . ... February 2012 . ... Лаборатория лазерной интерферометрии is proudly powered by WordPress . ...

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... S.P. KOROLEV ROCKET AND SPACE CORPORATION ENERGIA . ... OAO RSC "Energia" . ... Company's History . ... ISS Russian Segment . ... News . ... Russian logistics spacecraft Progress M-04M, after two days in free flight, docked with the International Space Station (ISS). ... All the dynamic operations were performed by mission control specialists under the supervision of the Technical Management (The Technical Manager is the President and Designer General of the S.P. Korolev RSC Energia V.A. Lopota). ...

The direct detection of gravitational waves is one of those events long-expected by physicists that are nevertheless a significant occurrence which excites the world scientific community as if something unexpected has happened. ... Many rumors leaked ahead of the conference, and the fact that something (that is, a signal corresponding to gravitational waves) was discovered by LIGO (Laser Interferometer Gravitational-Wave Observatory) was discussed on the sidelines. ... arXiv:1602.03868 . ...

Regions designation | Regions models | ASCII files description . The real time visibility of the IB_TAIL relative to the Evpatoria and Panska Ves . ... The real time regions passing . ... The IB_TAIL geocentric distance as a function of the Moscow time (MT = UT + 3h) (Plot) . Geomagnetic local time in the IB_TAIL position as a function of the MT (Plot) . The IB_TAIL orbital data ASCII files . ... INTERBALL mission  ...

... Circumstellar disc of beta Pictoris: constraints on grain properties from polarization. To appear in the Astronomy & Astrophysics . abs , src , ps ] . ... Dust influx to Titan from Hyperion . ... abs ] . ... Characteristics of bulges and disks in interacting galaxies . ... Dust grains around Herbig Ae/Be stars: porous, cometary-like grains? ... To appear in the Astronomy & Astrophysics Supplement . ... Finally, Links may lead you to more options (e.g. via the LANL preprint system). ...