Matches in SemOpenAlex for { <https://semopenalex.org/work/W1985130111> ?p ?o ?g. }
- W1985130111 endingPage "58" @default.
- W1985130111 startingPage "58" @default.
- W1985130111 abstract "The origin, structure and evolution of the small gas cloud, G2, is investigated, that is on an orbit almost straight into the Galactic central supermassive black hole (SMBH). G2 is a sensitive probe of the hot accretion zone of Sgr A*, requiring gas temperatures and densities that agree well with models of captured shock-heated stellar winds. Its mass is equal to the critical mass below which cold clumps would be destroyed quickly by evaporation. Its mass is also constrained by the fact that at apocenter its sound crossing timescale was equal to its orbital timescale. Our numerical simulations show that the observed structure and evolution of G2 can be well reproduced if it formed in pressure equilibrium with the surrounding in 1995 at a distance from the SMBH of 7.6e16 cm. If the cloud would have formed at apocenter in the 'clockwise' stellar disk as expected from its orbit, it would be torn into a very elongated spaghetti-like filament by 2011 which is not observed. This problem can be solved if G2 is the head of a larger, shell-like structure that formed at apocenter. Our numerical simulations show that this scenario explains not only G2's observed kinematical and geometrical properties but also the Br_gamma observations of a low surface brightness gas tail that trails the cloud. In 2013, while passing the SMBH G2 will break up into a string of droplets that within the next 30 years mix with the surrounding hot gas and trigger cycles of AGN activity." @default.
- W1985130111 created "2016-06-24" @default.
- W1985130111 creator A5032049136 @default.
- W1985130111 creator A5048391758 @default.
- W1985130111 creator A5069499982 @default.
- W1985130111 creator A5070619820 @default.
- W1985130111 creator A5077717776 @default.
- W1985130111 creator A5087188225 @default.
- W1985130111 creator A5090982750 @default.
- W1985130111 date "2012-04-13" @default.
- W1985130111 modified "2023-10-10" @default.
- W1985130111 title "PHYSICS OF THE GALACTIC CENTER CLOUD G2, ON ITS WAY TOWARD THE SUPERMASSIVE BLACK HOLE" @default.
- W1985130111 cites W1758188984 @default.
- W1985130111 cites W1969545471 @default.
- W1985130111 cites W1971014210 @default.
- W1985130111 cites W1976676831 @default.
- W1985130111 cites W1977825268 @default.
- W1985130111 cites W1979083486 @default.
- W1985130111 cites W1980547824 @default.
- W1985130111 cites W1980878348 @default.
- W1985130111 cites W1981271022 @default.
- W1985130111 cites W1991500289 @default.
- W1985130111 cites W1993671841 @default.
- W1985130111 cites W2001303505 @default.
- W1985130111 cites W2002485297 @default.
- W1985130111 cites W2004141682 @default.
- W1985130111 cites W2006433588 @default.
- W1985130111 cites W2007857565 @default.
- W1985130111 cites W2010897480 @default.
- W1985130111 cites W2013285588 @default.
- W1985130111 cites W2014873157 @default.
- W1985130111 cites W2015068177 @default.
- W1985130111 cites W2016598507 @default.
- W1985130111 cites W2024954773 @default.
- W1985130111 cites W2026818944 @default.
- W1985130111 cites W2028041627 @default.
- W1985130111 cites W2032293292 @default.
- W1985130111 cites W2032372224 @default.
- W1985130111 cites W2032817371 @default.
- W1985130111 cites W2039241537 @default.
- W1985130111 cites W2040414328 @default.
- W1985130111 cites W2042122167 @default.
- W1985130111 cites W2051864624 @default.
- W1985130111 cites W2053696551 @default.
- W1985130111 cites W2054373355 @default.
- W1985130111 cites W2056562333 @default.
- W1985130111 cites W2063451176 @default.
- W1985130111 cites W2064955391 @default.
- W1985130111 cites W2066011121 @default.
- W1985130111 cites W2069535582 @default.
- W1985130111 cites W2074788243 @default.
- W1985130111 cites W2075219626 @default.
- W1985130111 cites W2079911557 @default.
- W1985130111 cites W2081248194 @default.
- W1985130111 cites W2081951835 @default.
- W1985130111 cites W2091529942 @default.
- W1985130111 cites W2091878971 @default.
- W1985130111 cites W2094654900 @default.
- W1985130111 cites W2096251032 @default.
- W1985130111 cites W2108619446 @default.
- W1985130111 cites W2110284565 @default.
- W1985130111 cites W2124422401 @default.
- W1985130111 cites W2134304928 @default.
- W1985130111 cites W2134306568 @default.
- W1985130111 cites W2136001359 @default.
- W1985130111 cites W2148153861 @default.
- W1985130111 cites W2157058681 @default.
- W1985130111 cites W2949488612 @default.
- W1985130111 cites W3098774414 @default.
- W1985130111 cites W3099961299 @default.
- W1985130111 cites W3100866521 @default.
- W1985130111 cites W3101080582 @default.
- W1985130111 cites W3101738650 @default.
- W1985130111 cites W3101948079 @default.
- W1985130111 cites W3101970246 @default.
- W1985130111 cites W3103954928 @default.
- W1985130111 cites W3104186194 @default.
- W1985130111 cites W3104929225 @default.
- W1985130111 cites W3121340978 @default.
- W1985130111 cites W3121629144 @default.
- W1985130111 cites W3122533120 @default.
- W1985130111 cites W3125471611 @default.
- W1985130111 doi "https://doi.org/10.1088/0004-637x/750/1/58" @default.
- W1985130111 hasPublicationYear "2012" @default.
- W1985130111 type Work @default.
- W1985130111 sameAs 1985130111 @default.
- W1985130111 citedByCount "105" @default.
- W1985130111 countsByYear W19851301112012 @default.
- W1985130111 countsByYear W19851301112013 @default.
- W1985130111 countsByYear W19851301112014 @default.
- W1985130111 countsByYear W19851301112015 @default.
- W1985130111 countsByYear W19851301112016 @default.
- W1985130111 countsByYear W19851301112017 @default.
- W1985130111 countsByYear W19851301112018 @default.
- W1985130111 countsByYear W19851301112019 @default.
- W1985130111 countsByYear W19851301112020 @default.
- W1985130111 countsByYear W19851301112021 @default.
- W1985130111 countsByYear W19851301112022 @default.