Matches in SemOpenAlex for { <https://semopenalex.org/work/W3154754320> ?p ?o ?g. }
Showing items 1 to 59 of
59
with 100 items per page.
- W3154754320 abstract "Primordial black holes (PBHs) as part of the Dark Matter (DM) would modify the evolution of large-scale structures and the thermal history of the universe. Future 21 cm forest observations, sensitive to small scales and the thermal state of the Inter Galactic Medium (IGM), could probe the existence of such PBHs. In this article, we show that the shot noise isocurvature mode on small scales induced by the presence of PBHs can enhance the amount of low mass halos, or minihalos, and thus, the number of 21 cm absorption lines. However, if the mass of PBHs is as large as $M_{rm PBH}gtrsim 10 , M_odot$, with an abundant enough fraction of PBHs as DM, $f_{rm PBH}$, the IGM heating due to accretion onto the PBHs counteracts the enhancement due to the isocurvature mode, reducing the number of absorption lines instead. The concurrence of both effects imprints distinctive signatures in the number of absorbers, allowing to bound the abundance of PBHs. We compute the prospects for constraining PBHs with future 21 cm forest observations, finding achievable competitive upper limits on the abundance as low as $f_{rm PBH} sim 10^{-3}$ at $M_{rm PBH}= 100 , M_odot$, or even lower at larger masses, in unexplored regions of the parameter space by current probes. The impact of astrophysical X-ray sources on the IGM temperature is also studied, which could potentially weaken the bounds." @default.
- W3154754320 created "2021-04-26" @default.
- W3154754320 creator A5024867496 @default.
- W3154754320 creator A5084797980 @default.
- W3154754320 date "2021-04-21" @default.
- W3154754320 modified "2023-09-27" @default.
- W3154754320 title "21 cm Forest Constraints on Primordial Black Holes" @default.
- W3154754320 cites W2479012508 @default.
- W3154754320 cites W3007895520 @default.
- W3154754320 hasPublicationYear "2021" @default.
- W3154754320 type Work @default.
- W3154754320 sameAs 3154754320 @default.
- W3154754320 citedByCount "1" @default.
- W3154754320 countsByYear W31547543202021 @default.
- W3154754320 crossrefType "posted-content" @default.
- W3154754320 hasAuthorship W3154754320A5024867496 @default.
- W3154754320 hasAuthorship W3154754320A5084797980 @default.
- W3154754320 hasConcept C121332964 @default.
- W3154754320 hasConcept C125287762 @default.
- W3154754320 hasConcept C159249277 @default.
- W3154754320 hasConcept C182877743 @default.
- W3154754320 hasConcept C193943012 @default.
- W3154754320 hasConcept C24890656 @default.
- W3154754320 hasConcept C2776401274 @default.
- W3154754320 hasConcept C44870925 @default.
- W3154754320 hasConceptScore W3154754320C121332964 @default.
- W3154754320 hasConceptScore W3154754320C125287762 @default.
- W3154754320 hasConceptScore W3154754320C159249277 @default.
- W3154754320 hasConceptScore W3154754320C182877743 @default.
- W3154754320 hasConceptScore W3154754320C193943012 @default.
- W3154754320 hasConceptScore W3154754320C24890656 @default.
- W3154754320 hasConceptScore W3154754320C2776401274 @default.
- W3154754320 hasConceptScore W3154754320C44870925 @default.
- W3154754320 hasLocation W31547543201 @default.
- W3154754320 hasOpenAccess W3154754320 @default.
- W3154754320 hasPrimaryLocation W31547543201 @default.
- W3154754320 hasRelatedWork W1794689384 @default.
- W3154754320 hasRelatedWork W1807469229 @default.
- W3154754320 hasRelatedWork W1999725403 @default.
- W3154754320 hasRelatedWork W2019196468 @default.
- W3154754320 hasRelatedWork W2126047253 @default.
- W3154754320 hasRelatedWork W2156108127 @default.
- W3154754320 hasRelatedWork W2280568031 @default.
- W3154754320 hasRelatedWork W2338060975 @default.
- W3154754320 hasRelatedWork W247665464 @default.
- W3154754320 hasRelatedWork W2793765145 @default.
- W3154754320 hasRelatedWork W2798687131 @default.
- W3154754320 hasRelatedWork W3099223797 @default.
- W3154754320 hasRelatedWork W3100472206 @default.
- W3154754320 hasRelatedWork W3100494316 @default.
- W3154754320 hasRelatedWork W3102448845 @default.
- W3154754320 hasRelatedWork W3103056702 @default.
- W3154754320 hasRelatedWork W3121601336 @default.
- W3154754320 hasRelatedWork W3149192850 @default.
- W3154754320 hasRelatedWork W3160532626 @default.
- W3154754320 isParatext "false" @default.
- W3154754320 isRetracted "false" @default.
- W3154754320 magId "3154754320" @default.
- W3154754320 workType "article" @default.