Repozitorij Univerze v Novi Gorici

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Naslov:Two-integral distribution functions in axisymmetric galaxies: Implications for dark matter searches
Avtorji:ID Petač, Mihael (Avtor)
ID Ullio, Piero (Avtor)
Datoteke: Gradivo nima datotek, ki so prostodostopne za javnost. Gradivo je morda fizično dosegljivo v knjižnici fakultete, zalogo lahko preverite v COBISS-u. Povezava se odpre v novem oknu
Jezik:Angleški jezik
Vrsta gradiva:Neznano
Tipologija:1.01 - Izvirni znanstveni članek
Organizacija:UNG - Univerza v Novi Gorici
Opis:We address the problem of reconstructing the phase-space distribution function for an extended collisionless system, with known density profile and in equilibrium within an axisymmetric gravitational potential. Assuming that it depends on only two integrals of motion, namely the energy and the component of the angular momentum along the axis of symmetry Lz , there is a one-to-one correspondence between the density profile and the component of the distribution function that is even in Lz, as well as between the weighted azimuthal velocity profile and the odd component. This inversion procedure was originally proposed by Lynden-Bell and later refined in its numerical implementation by Hunter and Qian; after overcoming a technical difficulty, we apply it here for the first time in presence of a strongly flattened component, as a novel approach of extracting the phase-space distribution function for dark matter particles in the halo of spiral galaxies. We compare results obtained for realistic axisymmetric models to those in the spherical symmetric limit as assumed in previous analyses, showing the rather severe shortcomings in the latter. We then apply the scheme to the Milky Way and discuss the implications for the direct dark matter searches. In particular, we reinterpret the null results of the Xenon1T experiment for spin-(in)dependent interactions and make predictions for the annual modulation of the signal for a set of axisymmetric models, including a self-consistently defined corotating halo.
Ključne besede:dark matter, astrophysics of galaxies, high energy physics, phenomenology
Leto izida:2019
Št. strani:str. 1-20
Številčenje:Vol. 99, no. 4
PID:20.500.12556/RUNG-6831 Novo okno
COBISS.SI-ID:78759427 Novo okno
UDK:524
ISSN pri članku:2470-0010
DOI:10.1103/PhysRevD.99.043003 Novo okno
NUK URN:URN:SI:UNG:REP:W4M1CQYC
Datum objave v RUNG:01.10.2021
Število ogledov:2140
Število prenosov:0
Metapodatki:XML RDF-CHPDL DC-XML DC-RDF
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Gradivo je del revije

Naslov:Physical review
Skrajšan naslov:Phys. rev., D
Založnik:American Physical Society
ISSN:2470-0010
COBISS.SI-ID:29757223 Novo okno

Gradivo je financirano iz projekta

Financer:EC - European Commission
Program financ.:H2020
Številka projekta:674896

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