A unified solution to the small scale problems of the Lambda CDM model II: introducing parent-satellite interaction
dc.contributor.author | Del Popolo, A. | |
dc.contributor.author | Le Delliou, M. [UNESP] | |
dc.contributor.institution | Univ Catania | |
dc.contributor.institution | Ist Nazl Fis Nucl | |
dc.contributor.institution | Universidade Federal dp Rio Grande do Norte (UFRN) | |
dc.contributor.institution | Universidade Estadual Paulista (Unesp) | |
dc.date.accessioned | 2015-11-03T15:28:51Z | |
dc.date.available | 2015-11-03T15:28:51Z | |
dc.date.issued | 2014-12-01 | |
dc.description.abstract | We continue the study of the impact of baryon physics on the small scale problems of the Lambda CDM model, based on a semi-analytical model (Del Popolo, 2009). With such model, we show how the cusp/core, missing satellite (MSP), Too Big to Fail (TBTF) problems and the angular momentum catastrophe can be reconciled with observations, adding parent-satellite interaction. Such interaction between dark matter (DM) and baryons through dynamical friction (DF) can sufficiently flatten the inner cusp of the density profiles to solve the cusp/core problem. Combining, in our model, a Zolotov et al. (2012)-like correction, similarly to Brooks et al. (2013), and effects of UV heating and tidal stripping, the number of massive, luminous satellites, as seen in the Via Lactea 2 (VL2) subhaloes, is in agreement with the numbers observed in the MW, thus resolving the MSP and TBTF problems. The model also produces a distribution of the angular spin parameter and angular momentum in agreement with observations of the dwarfs studied by van den Bosch, Burkert, &Swaters (2001). | en |
dc.description.affiliation | Univ Catania, Dipartimento Fis &Astron, I-95125 Catania, Italy | |
dc.description.affiliation | Ist Nazl Fis Nucl, Sez Catania, I-95123 Catania, Italy | |
dc.description.affiliation | Univ Fed Rio Grande do Norte, Int Inst Phys, BR-59012970 Natal, RN, Brazil | |
dc.description.affiliation | Univ Estadual Paulista, IFT, BR-01140070 Sao Paulo, SP, Brazil | |
dc.description.affiliationUnesp | Univ Estadual Paulista, Instituto de Fisica Teorica (IFT), BR-01140070 Sao Paulo, SP, Brazil | |
dc.description.sponsorship | Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) | |
dc.description.sponsorshipId | FAPESP: 2011/24089-5 | |
dc.description.sponsorshipId | FAPESP: PNPD/CAPES20132029 | |
dc.format.extent | 1-26 | |
dc.identifier | http://iopscience.iop.org/article/10.1088/1475-7516/2014/12/051/meta;jsessionid=6541312D8F005C000B334B7E48B1556F.c1.iopscience.cld.iop.org | |
dc.identifier.citation | Journal Of Cosmology And Astroparticle Physics. Bristol: Iop Publishing Ltd, n. 12, p. 1-26, 2014. | |
dc.identifier.doi | 10.1088/1475-7516/2014/12/051 | |
dc.identifier.issn | 1475-7516 | |
dc.identifier.uri | http://hdl.handle.net/11449/130046 | |
dc.identifier.wos | WOS:000350115800020 | |
dc.language.iso | eng | |
dc.publisher | Iop Publishing Ltd | |
dc.relation.ispartof | Journal Of Cosmology And Astroparticle Physics | |
dc.relation.ispartofjcr | 5.126 | |
dc.relation.ispartofsjr | 1,089 | |
dc.rights.accessRights | Acesso restrito | |
dc.source | Web of Science | |
dc.subject | Dark matter theory | en |
dc.subject | Galaxy evolution | en |
dc.subject | Galaxy formation | en |
dc.title | A unified solution to the small scale problems of the Lambda CDM model II: introducing parent-satellite interaction | en |
dc.type | Artigo | |
dcterms.license | http://iopscience.iop.org/page/copyright | |
dcterms.rightsHolder | Iop Publishing Ltd | |
unesp.campus | Universidade Estadual Paulista (Unesp), Instituto de Física Teórica (IFT), São Paulo | pt |