Can light dark matter solve the core-cusp problem?
نویسندگان
چکیده
منابع مشابه
Origin of Cusp in Dark Matter Halo
Hierarchical clustering model has been extensively used in studies of the cosmological structure formation. In the hierarchical model, such as the standard Cold Dark Matter (CDM) dominated universe, the structures are formed in a bottom-up fashion. In this letter, we show that dark halos formed through the hierarchical clustering have non-isothermal structure and central density cusp shallower ...
متن کاملSupersymmetric Dark Matter - How Light Can the LSP Be?
Using a very minimal set of theoretical assumptions we derive a lower limit on the LSP mass in the MSSM. We only require that the LSP be the lightest neutralino, that it be responsible for the observed relic density and that the MSSM spectrum respect the LEP2 limits. We explicitly do not require any further knowledge about the MSSM spectrum or the mechanism of supersymmetry breaking. Under thes...
متن کاملThe DARK MATTER problem
There are several dark matter problems, each on a different scale. The standard way to prove the existence of dark matter is to compare dynamical estimates of the mass of an object (galaxy, cluster) with an evaluation of its population contents. Historically, we can distinguish four distinct problems : 1. the galactic force law in the solar neighbourhood 2. galactic halos 3. groups and clusters...
متن کاملThe Dark Matter Problem in Light of Quantum Gravity
We show how, by considering the cumulative effect of tiny quantum gravitational fluctuations over very large distances, it may be possible to: (a) reconcile nucleosynthesis bounds on the density parameter of the Universe with the predictions of inflationary cosmology, and (b) reproduce the inferred variation of the density parameter with distance. Our calculation can be interpreted as a computa...
متن کاملConstraints on light dark matter from core-collapse supernovae.
We show that light (approximately or = 1-30 MeV) dark matter particles can play a significant role in core-collapse supernovae, if they have relatively large annihilation and scattering cross sections, as compared to neutrinos. We find that if such particles are lighter than approximately or = 10 MeV and reproduce the observed dark matter relic density, supernovae would cool on a much longer ti...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Physical Review D
سال: 2018
ISSN: 2470-0010,2470-0029
DOI: 10.1103/physrevd.98.023513