Pressure from dark matter annihilation and the rotation curve of spiral galaxies
نویسندگان
چکیده
منابع مشابه
The Universal Rotation Curve of Spiral Galaxies: I. the Dark Matter Connection
We use a homogeneous sample of about 1100 optical and radio rotation curves (RCs) and relative surface photometry to investigate the main mass structure properties of spirals, over a range of 6 magnitudes and out to ∼ < 1.5 and 2 optical radii (for the optical and radio data, respectively). We definitely confirm the strong dependence on luminosity for both the profile and the amplitude of RCs c...
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In the current ΛCDM cosmological scenario, N -body simulations provide us with a Universal mass profile, and consequently a Universal equilibrium circular velocity of the virialized objects, as galaxies. In this paper we obtain, by combining kinematical data of their inner regions with global observational properties, the Universal Rotation Curve (URC) of disk galaxies and the corresponding mas...
متن کاملHI and dark matter in spiral galaxies
We still do not have a “standard” model for the mass distribution of spiral galaxies. I review various methods used to delimit the range of values of the mass-to-light ratio of the disk, such as spiral structure criteria, the influence of bars, warped and flaring HI layers, velocity dispersions, and features in the rotation curve occuring just beyond the optical radius. It is not yet clear whet...
متن کاملThe rotation curve of spiral galaxies and its cosmological implications
We review the topic of rotation curves of spiral galaxies emphasizing the standard interpretation as evidence for the existence of dark matter halos. Galaxies other than spirals and late-type dwarfs may also possess great amounts of dark matter, and therefore ellipticals, dwarf spirals, lenticulars and polar ring galaxies are also considered. Furthermore, other methods for determining galactic ...
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ژورنال
عنوان ژورنال: Monthly Notices of the Royal Astronomical Society
سال: 2011
ISSN: 0035-8711
DOI: 10.1111/j.1365-2966.2011.18275.x