Stellar Structure of Dark Stars: A First Phase of Stellar Evolution Resulting from Dark Matter Annihilation
نویسندگان
چکیده
منابع مشابه
Stellar Structure of Dark Stars: a First Phase of Stellar Evolution Resulting from Dark Matter Annihilation
Dark Stars are the very first phase of stellar evolution in the history of the universe: the first stars to form (at redshifts z ∼ 10 − 50) are powered by heating from dark matter (DM) annihilation instead of fusion (if the DM is made of particles which are their own antiparticles). We find equilibrium polytropic configurations for these stars; we start from the time DM heating becomes importan...
متن کاملStellar Structure of Dark Stars: a first phase of Stellar Evolution due to Dark Matter Annihilation
Dark Stars are the very first phase of stellar evolution in the history of the universe: the first stars to form (at redshifts z ∼ 10 − 50) are powered by dark matter annihilation instead of fusion (if the dark matter is made of particles which are their own antipartners). We find equilibrium polytropic configurations for these stars; we start from the time DM heating becomes important (M ∼ 1 −...
متن کاملThe Effect of Dark matter on the first stars: a new phase of stellar evolution
Dark matter (DM) in protostellar halos can dramatically alter the current theoretical framework for the formation of the first stars. Heat from supersymmetric DM annihilation can overwhelm any cooling mechanism, consequently impeding the star formation process and possibly leading to a new stellar phase. The first stars to form in the universe may be “dark stars”: giant (∼ > 1 AU) hydrogen-heli...
متن کاملDark matter and stellar evolution
The exist.rnce of weakly interacting massive pa1·ticles (WHvlPs) has been suggested to explain both t.he dark matter conundrum and the sohu neutrino deficiency. Provided t.hat thf'y do not annihilat.f', these part.ides can be extremely efficient. in transporting energy inside stellar cori�s. They can supplement radiation and, under the specific circ:umstances which Wf' analyze, f'H'.'11 supprf'...
متن کاملEffects of dark matter annihilation on the first stars
We study the evolution of the first stars in the universe (Population III) from the early pre–Main Sequence (MS) until the end of helium burning in the presence of WIMP dark matter annihilation inside the stellar structure. The two different mechanisms that can provide this energy source are the contemporary contraction of baryons and dark matter, and the capture of WIMPs by scattering off the ...
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 Astrophysical Journal
سال: 2008
ISSN: 0004-637X,1538-4357
DOI: 10.1086/592685