Primordial neutrinos: hot in SM–GR– $$\Lambda $$ Λ -CDM, cold in SM–LGT
نویسندگان
چکیده
منابع مشابه
Galaxies in a simulated Λ CDM Universe I : cold mode and hot cores
We study the formation of galaxies in a large volume (50h Mpc, 2 × 288 particles) cosmological simulation, evolved using the entropy and energy conserving smoothed particle hydrodynamics (SPH) code Gadget-2. Most of the baryonic mass in galaxies of all masses is originally acquired through filamentary “cold mode” accretion of gas that was never shock heated to its halo virial temperature, confi...
متن کاملGalaxies in a simulated Lambda CDM Universe - I. Cold mode and hot cores
We study the formation of galaxies in a large volume (50h Mpc, 2 × 288 particles) cosmological simulation, evolved using the entropy and energy conserving smoothed particle hydrodynamics (SPH) code GADGET-2. Most of the baryonic mass in galaxies of all masses is originally acquired through filamentary “cold mode” accretion of gas that was never shock heated to its halo virial temperature, confi...
متن کاملBackground X-ray Emission from Hot Gas in Cdm and Cdm+λ Universes: Spectral Signatures
We present a new treatment of two popular models for the growth of structure, examining the X-ray emission from hot gas with allowance for spectral line emission from various atomic species, primarily “metals”. The X-ray emission from the bright cluster sources is not significantly changed from prior work and, as noted earlier, shows the CDM+Λ model (LCDM) to be consistent but the standard, COB...
متن کاملEarly structure in Λ CDM
We use a novel technique to simulate the growth of the most massive progenitor of a protocluster region from redshift z ∼ 80, when its mass was about 10M⊙, until the present day. Our nested sequence of N–body resimulations allows us to study in detail the structure both of the dark matter object itself and of its environment. Our effective resolution is optimal at redshifts of 49, 29, 12, 5 and...
متن کاملLarge primordial gravitational wave background in a class of BSI Λ CDM models
We consider the primordial gravitational wave (GW) background in a class of spatiallyflat inflationary cosmological models with cold dark matter (CDM), a cosmological constant, and a broken-scale-invariant (BSI) steplike primordial (initial) spectrum of adiabatic perturbations produced in an exactly solvable inflationary model where the inflaton potential has a rapid change of its first derivat...
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: The European Physical Journal C
سال: 2018
ISSN: 1434-6044,1434-6052
DOI: 10.1140/epjc/s10052-018-6104-6