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We present a detailed analysis of the effect of an observationally determined dark matter (DM) velocity distribution function (VDF) of the Milky Way (MW) on DM direct detection rates. We go beyond local kinematic tracers and use rotation…

高能物理 - 唯象学 · 物理学 2019-07-17 Sayan Mandal , Subhabrata Majumdar , Vikram Rentala , Ritoban Basu Thakur

Weakly Interacting Massive Particles (WIMPs) are one of the leading candidates for Dark Matter. Currently, the most promising method to detect WIMPs is the direct detection of the recoil energy deposited in a low-background laboratory…

天体物理学 · 物理学 2011-11-10 Chung-Lin Shan

Weakly interacting massive particles (WIMPs) are one of the leading candidates for dark matter. Currently, the most promising method to detect many different WIMP candidates is the direct detection of the recoil energy deposited in a…

天体物理学 · 物理学 2010-10-27 Manuel Drees , Chung-Lin Shan

Irrespective of the dark matter (DM) candidate, several potentially observable signatures derive from the velocity distribution of DM in halos, in particular in the Milky Way (MW) halo. Examples include direct searches for…

星系天体物理 · 物理学 2018-09-28 Thomas Lacroix , Martin Stref , Julien Lavalle

In this paper, as the third part of the third step of our study on developing data analysis procedures for using 3-dimensional information offered by directional direct Dark Matter detection experiments in the future, we introduce a…

高能天体物理现象 · 物理学 2021-03-15 Chung-Lin Shan

Among the different strategies aiming to detect WIMP dark matter (DM), a neutrino signal coming from the Sun would be a smoking gun. This possibility relies on the DM capture by the Sun driven by the local DM distribution assumptions: the…

星系天体物理 · 物理学 2019-12-18 A. Nuñez-Castiñeyra , E. Nezri , V. Bertin

We present a new approach for quantifying the abundance of galaxy clusters and constraining cosmological parameters using dynamical measurements. In the standard method, galaxy line-of-sight (LOS) velocities, $v$, or velocity dispersions…

宇宙学与河外天体物理 · 物理学 2017-01-25 M. Ntampaka , H. Trac , J. Cisewski , L. C. Price

Direct detection of Weakly Interacting Massive Particle (WIMP) candidates of Dark Matter (DM) is studied within the context of a self-consistent truncated isothermal model of the finite-size dark halo of the Galaxy based on the "King model"…

宇宙学与河外天体物理 · 物理学 2014-01-03 Soumini Chaudhury , Pijushpani Bhattacharjee , Ramanath Cowsik

The differential event rate in Weakly Interacting Massive Particle (WIMP) direct detection experiments depends on the local dark matter density and velocity distribution. Accurate modelling of the local dark matter distribution is therefore…

宇宙学与河外天体物理 · 物理学 2017-08-02 Anne M Green

We examine the Velocity Distribution Function (VDF) in dark matter halos from Milky Way to cluster mass scales. We identify an empirical model for the VDF with a wider peak and a steeper tail than a Maxwell--Boltzmann distribution, and…

宇宙学与河外天体物理 · 物理学 2013-01-25 Yao-Yuan Mao , Louis E. Strigari , Risa H. Wechsler , Hao-Yi Wu , Oliver Hahn

Rates for detection of weakly-interacting massive-particle (WIMP) dark matter are usually carried out assuming the Milky Way halo is an isothermal sphere. However, it is possible that our halo is not precisely spherical; it may have some…

高能物理 - 唯象学 · 物理学 2010-11-30 Marc Kamionkowski , Ali Kinkhabwala

In this paper, as a preparation of developing data analysis procedures for using 3-dimensional information offered by directional Dark Matter (DM) detection experiments, we study the patterns of the angular distribution of the Monte…

高能天体物理现象 · 物理学 2020-03-12 Chung-Lin Shan

The velocity distribution function of dark matter particles is expected to show significant departures from a Maxwell-Boltzmann distribution. This can have profound effects on the predicted dark matter - nucleon scattering rates in direct…

星系天体物理 · 物理学 2014-11-20 M. Kuhlen , N. Weiner , J. Diemand , P. Madau , B. Moore , D. Potter , J. Stadel , M. Zemp

In this paper, we extended our earlier work on the reconstruction of the (time-averaged) one-dimensional velocity distribution of Galactic Weakly Interacting Massive Particles (WIMPs) and introduce the Bayesian fitting procedure to the…

高能天体物理现象 · 物理学 2014-08-05 Chung-Lin Shan

Several direct detection experiments, including recently CDMS-II, have reported signals consistent with 5 to 10 GeV dark matter (DM) that appear to be in tension with null results from XENON and LUX experiments; these indicate a careful…

宇宙学与河外天体物理 · 物理学 2014-03-10 Yao-Yuan Mao , Louis E. Strigari , Risa H. Wechsler

We present a systematic halo-independent analysis of available Weakly Interacting Massive Particles (WIMP) direct detection data within the framework of Inelastic Dark Matter (IDM). We show that, when the smallest number of assumptions is…

宇宙学与河外天体物理 · 物理学 2014-09-03 Stefano Scopel , KookHyun Yoon

We present a new determination of the local dark matter phase-space density. This result is obtained implementing, in the limit of isotropic velocity distribution and spherical symmetry, Eddington's inversion formula, which links univocally…

宇宙学与河外天体物理 · 物理学 2015-06-03 Riccardo Catena , Piero Ullio

Cosmological observations indicate that most of the matter in the Universe is Dark Matter. Dark Matter in the form of Weakly Interacting Massive Particles (WIMPs) can be detected directly, via its elastic scattering off target nuclei. Most…

Reducing theoretical uncertainties in Galactic dark matter (DM) searches is an important challenge as several experiments are now delving into the parameter space relevant to popular (particle or not) candidates. Since many DM signal…

星系天体物理 · 物理学 2020-10-20 Thomas Lacroix , Arturo Núñez-Castiñeyra , Martin Stref , Julien Lavalle , Emmanuel Nezri

Weakly Interacting Massive Particles (WIMPs) are one of the leading candidates for Dark Matter. So far the usual procedure for constraining the WIMP-nucleon cross sections in direct Dark Matter detection experiments have been to fit the…

高能物理 - 唯象学 · 物理学 2011-07-05 Chung-Lin Shan
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