ICRC2015

Session

Parallel DM03

1 Aug 2015, 14:00

World Forum

1164. Determining the Local Dark Matter Density

Hamish Silverwood (University of Amsterdam)

01/08/2015, 14:00

DM-TH

Oral contribution

Determination of the Dark Matter density at the solar position is critical to direct dark matter searches. Additionally, it is important to make this determination with as few assumptions as possible, as results from direct detection searches are used to explore a wide variety of theoretical models, and hidden astrophysical assumptions could bias theoretical searches. Here we present a Jeans...

283. Dark matter annihilation and decay factors in the Milky Way's dwarf spheroidal galaxies

Vincent Bonnivard (Centre National de la Recherche Scientifique (FR))

01/08/2015, 14:15

DM-TH

Oral contribution

Self-annihilation or decay of dark matter (DM) particles could produce high-energy gamma-rays. Owing to their proximity, high DM content, and lack of astrophysical background, dwarf spheroidal galaxies (dSphs) of the Milky Way are among the best targets for current and future gamma-ray instruments. Putting constraints on the DM particle properties requires a precise knowledge of their...

356. Astrophysical explanation of AMS-02 electron and positron data and constraints on dark matter contribution

Mattia Di Mauro (University of Turin and INFN Turin)

01/08/2015, 14:30

DM-TH

Oral contribution

Electron and positron cosmic rays are one of the most powerful tool for astroparticle physics. The AMS-02 Collaboration has recently released the electron, positron inclusive and positron fraction spectra measured with an incredible precision. We performed a combined analysis of the recent AMS-02 data in a self-consistent framework where we theoretically model all the astrophysical...

834. A dark matter origin of the extragalactic radio background

Ke Fang

01/08/2015, 14:45

DM-TH

Oral contribution

Observations by ARCADE-2 and other telescopes have reported an excess in the isotropic radio background. This excess has a hard spectral index and is found to significantly exceed the expected contribution from known astrophysical sources. Specifically, previous works have suggested that the ARCADE-2 signal is unusually smooth, compared to emission which traces large scale structure. In this...

1173. Stellar evolution constrains primordial black holes as dark matter candidates

Maxim Pshirkov (Moscow State University)

01/08/2015, 15:00

DM-TH

Oral contribution

Dark matter could be captured by stars at any stage of their evolution. By considering adiabatic contraction of the dark matter (DM) during star formation, we estimate the amount of DM trapped in stars at their birth. We simulate the adiabatic contraction of a DM distribution during the process of the star formation, paying particular attention to the phase space distribution of the DM...

942. A new look at the cosmic ray positron fraction

Mathieu Boudaud (LAPTh Annecy France)

01/08/2015, 15:15

DM-TH

Oral contribution