Matches in SemOpenAlex for { <https://semopenalex.org/work/W2950345419> ?p ?o ?g. }
Showing items 1 to 73 of
73
with 100 items per page.
- W2950345419 abstract "Recent observations by CREAM and ATIC-2 experiments suggest that (1) the spectrum of cosmic ray (CR) helium is harder than that of CR proton below the knee 10^15 eV and (2) all CR spectra become hard at > 10^11 eV/n. We propose a new picture that higher energy CRs are generated in more helium-rich region to explain the hardening (1) without introducing different sources for CR helium. The helium to proton ratio at ~100 TeV exceeds the Big Bang abundance Y=0.25 by several times, and the different spectrum is not reproduced within the diffusive shock acceleration theory. We argue that CRs are produced in the chemically enriched region, such as a superbubble, and the outward-decreasing abundance naturally leads to the hard spectrum of CR helium if CRs escape from the supernova remnant (SNR) shock in an energy-dependent way. We provide a simple analytical spectrum that also fits well the hardening (2) because of the decreasing Mach number in the hot superbubble with ~ 10^6 K. Our model predicts hard and concave spectra for heavier CR elements." @default.
- W2950345419 created "2019-06-27" @default.
- W2950345419 creator A5028851543 @default.
- W2950345419 creator A5048510105 @default.
- W2950345419 date "2010-11-19" @default.
- W2950345419 modified "2023-09-25" @default.
- W2950345419 title "Cosmic Ray Helium Hardening" @default.
- W2950345419 cites W1964742600 @default.
- W2950345419 cites W2087383446 @default.
- W2950345419 cites W3101862544 @default.
- W2950345419 cites W3103011951 @default.
- W2950345419 doi "https://doi.org/10.7529/icrc2011/v06/1242" @default.
- W2950345419 hasPublicationYear "2010" @default.
- W2950345419 type Work @default.
- W2950345419 sameAs 2950345419 @default.
- W2950345419 citedByCount "0" @default.
- W2950345419 crossrefType "posted-content" @default.
- W2950345419 hasAuthorship W2950345419A5028851543 @default.
- W2950345419 hasAuthorship W2950345419A5048510105 @default.
- W2950345419 hasBestOaLocation W29503454191 @default.
- W2950345419 hasConcept C111309251 @default.
- W2950345419 hasConcept C121332964 @default.
- W2950345419 hasConcept C127592171 @default.
- W2950345419 hasConcept C1276947 @default.
- W2950345419 hasConcept C171250308 @default.
- W2950345419 hasConcept C172809573 @default.
- W2950345419 hasConcept C184779094 @default.
- W2950345419 hasConcept C185544564 @default.
- W2950345419 hasConcept C192562407 @default.
- W2950345419 hasConcept C196939603 @default.
- W2950345419 hasConcept C2778339168 @default.
- W2950345419 hasConcept C2779227376 @default.
- W2950345419 hasConcept C44255700 @default.
- W2950345419 hasConcept C44870925 @default.
- W2950345419 hasConcept C4839761 @default.
- W2950345419 hasConcept C54516573 @default.
- W2950345419 hasConcept C546029482 @default.
- W2950345419 hasConcept C98444146 @default.
- W2950345419 hasConceptScore W2950345419C111309251 @default.
- W2950345419 hasConceptScore W2950345419C121332964 @default.
- W2950345419 hasConceptScore W2950345419C127592171 @default.
- W2950345419 hasConceptScore W2950345419C1276947 @default.
- W2950345419 hasConceptScore W2950345419C171250308 @default.
- W2950345419 hasConceptScore W2950345419C172809573 @default.
- W2950345419 hasConceptScore W2950345419C184779094 @default.
- W2950345419 hasConceptScore W2950345419C185544564 @default.
- W2950345419 hasConceptScore W2950345419C192562407 @default.
- W2950345419 hasConceptScore W2950345419C196939603 @default.
- W2950345419 hasConceptScore W2950345419C2778339168 @default.
- W2950345419 hasConceptScore W2950345419C2779227376 @default.
- W2950345419 hasConceptScore W2950345419C44255700 @default.
- W2950345419 hasConceptScore W2950345419C44870925 @default.
- W2950345419 hasConceptScore W2950345419C4839761 @default.
- W2950345419 hasConceptScore W2950345419C54516573 @default.
- W2950345419 hasConceptScore W2950345419C546029482 @default.
- W2950345419 hasConceptScore W2950345419C98444146 @default.
- W2950345419 hasLocation W29503454191 @default.
- W2950345419 hasOpenAccess W2950345419 @default.
- W2950345419 hasPrimaryLocation W29503454191 @default.
- W2950345419 hasRelatedWork W1968113492 @default.
- W2950345419 hasRelatedWork W2099199633 @default.
- W2950345419 hasRelatedWork W2547726304 @default.
- W2950345419 hasRelatedWork W2950345419 @default.
- W2950345419 hasRelatedWork W3098378089 @default.
- W2950345419 hasRelatedWork W3100231366 @default.
- W2950345419 hasRelatedWork W3105942373 @default.
- W2950345419 hasRelatedWork W3114209439 @default.
- W2950345419 hasRelatedWork W3181144768 @default.
- W2950345419 hasRelatedWork W641048205 @default.
- W2950345419 isParatext "false" @default.
- W2950345419 isRetracted "false" @default.
- W2950345419 magId "2950345419" @default.
- W2950345419 workType "article" @default.