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Fermion Dark Matter at the Center and in the Halo of the Galaxy


Bilić, Neven; Halliday, Sam; Tupper, Gary B.
Fermion Dark Matter at the Center and in the Halo of the Galaxy // Proceedings of the Conference on Physics beyond the Standard Model: Beyond the Desert 02
Oulu, Finska, 2002. (predavanje, međunarodna recenzija, cjeloviti rad (in extenso), znanstveni)


Naslov
Fermion Dark Matter at the Center and in the Halo of the Galaxy

Autori
Bilić, Neven ; Halliday, Sam ; Tupper, Gary B.

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni

Izvornik
Proceedings of the Conference on Physics beyond the Standard Model: Beyond the Desert 02 / - , 2002

Skup
Conference On Physics Beyond The Standard Model: Beyond The Desert 02

Mjesto i datum
Oulu, Finska, 02-07.07.2002.

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
Dark matter; selfgravitating gas; Galactic center; Galactic halo

Sažetak
After a discussion of the properties of degenerate fermion balls, we analyze the orbits of the star S0-2, in the supermassive black hole as well as in the fermion ball scenarios of the Galactic center. It is shown that both scenarios are consistent with the data of S0-2, which since 1992 has had a projected distance to Sgr A* smaller than 10 light-days, as measured during eight years by Eckart et al. and Ghez et al. We then consider a self-gravitating ideal fermion gas at nonzero temperature as a model for the Galactic halo. The Galactic halo of mass ~ 10^{12} solar masses, enclosed within a radius of ~ 200 kpc, is consistent with the existence of a supermassive compact dark object at the Galactic center that is in hydrostatic and quasi-thermal equilibrium with the halo.

Izvorni jezik
Engleski

Znanstvena područja
Fizika



POVEZANOST RADA


Projekt / tema
0098002

Ustanove
Institut "Ruđer Bošković", Zagreb

Autor s matičnim brojem:
Nevenko Bilić, (3635)