منابع مشابه
The Galactic Halo and CDM 3
This paper reviews the available information on the central density distribution and shape of the Milky Way’s halo. At present, there is no strong evidence that the Milky Way’s halo properties conflict with the predictions of cold dark matter (CDM): a primordial central power law cusp can be accommodated by the observations, and the current constraints on flattening are also consistent with the...
متن کاملWARMANDFUZZY: the halo model beyond CDM
Cold dark matter (CDM) is a well established paradigm to describe cosmological structure formation, and works extraordinarily well on large, linear, scales. Progressing further in dark matter physics requires being able to understand structure formation in the non-linear regime, both for CDM and its alternatives. This short note describes a calculation, and accompanying code, WARMANDFUZZY, inco...
متن کاملGalactic stellar haloes in the CDM model
We present six simulations of galactic stellar haloes formed by the tidal disruption of accreted dwarf galaxies in a fully cosmological setting. Our model is based on the Aquarius project, a suite of high-resolution N-body simulations of individual dark matter haloes. We tag subsets of particles in these simulations with stellar populations predicted by the GALFORM semianalytic model. Our metho...
متن کاملThe Galactic X-ray halo
Weanalyzed the intensity distribution of the 3/4 keV and 1/4 keV diffuse soft X-ray background by correlating the ROSAT all-sky survey with the Leiden/Dwingeloo H i survey. We found that the 3/4 keV and 1/4 keV intensity distributions can be modelled by a contribution from an isothermal (kT = 0.135 keV) flattened X-ray halo superposed on the radiation from an extragalactic X-ray background. The...
متن کاملHi in the galactic halo
We find solid evidence for diffuse Hi gas at substantial z heights in our Galaxy, with a velocity dispersion of σ = 60 km s −1 and a vertical projected column density of N Hi = 1.4 · 10 19 cm −2. This pervasive component of the emission spectrum could be identified in the Leiden/Dwingeloo 21-cm Survey (LDS) after increasing the accuracy further by correcting the observations for reflections fro...
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: Symposium - International Astronomical Union
سال: 2004
ISSN: 0074-1809
DOI: 10.1017/s0074180900183780