1 / 14

The Indirect Detection of Non-Baryonic Dark Matter

The Indirect Detection of Non-Baryonic Dark Matter. Application for a Postdoctoral Research Fellowship with the Science And Technology Research Council. Dr. Daniel T. Cumberbatch Case Western Reserve University. Universal Matter Constituents. 80 % DARK MATTER. 20% Baryons.

peri
Download Presentation

The Indirect Detection of Non-Baryonic Dark Matter

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. The Indirect Detection of Non-Baryonic Dark Matter Application for a Postdoctoral Research Fellowship with the Science And Technology Research Council Dr. Daniel T. Cumberbatch Case Western Reserve University

  2. Universal Matter Constituents 80 % DARK MATTER 20% Baryons

  3. Rotation Curves of spiral galaxies: Galaxy clusters: 2dFGRS INCREASING LENGTH SCALES Abell 1689, HST Large-scale structure Anisotropies in the CMB WMAP Evidence for Dark Matter

  4. The relative importance of the nature of DM is huge Universal Matter Constituents ( ??? ) 80 % DARK MATTER 20% Baryons ( i.e. p, n, e - )

  5. Identify anomalous features in cosmic-ray spectra Calculate local fluxes of DM annihilation or decay products Deduce constraints on Dark Matter properties by fitting to observations D.Phil. Research: The Indirect Detection of DM • Identification of DM through the detection of the products resulting from its annihilations or decays:

  6. D.Phil. Research: The Indirect Detection of DM • 8 papers constraining the properties of 6 DM candidates: • Supersymmetric Neutralinos • Sommerfeld-enhanced Annihilating DM • Sterile Neutrinos • Late-decaying Particles • Light Dark Matter • Compact Composite Objects • Broadened knowledge of Particle Phenomenology • Furthered experience in calculation of local fluxes of DM annihilation/decay products

  7. Saleem Zaroubi (senior LOFAR representative, Kapteyn Astronomical Institute, Groningen) has promised to share the resources of the Kapteyn Institute in a full collaborative effort on this project. Proposed Research: 21cm Signal from Galaxies & Clusters The LOw Frequency Array (LOFAR) • Radio Interferometer • Observes Galaxies/Clusters • DM annihilation products heat HI gas • Significantly effects thermal evolution of H • Observed by LOFAR in 21(1+z) cm signal • Model spatial distribution of DM • Constrain DM from LOFAR observations

  8. D. T. Cumberbatch, M. Lattanzi & J. Silk (arXiv:0801.0881) Neutralinos NFW Moore On threshold of LOFAR’s mK sensitivity! Redshift Detectable by LOFAR! LDM Burkert mLDM =3MeV mLDM =20MeV Redshift D.Phil. Research: Global 21cm Signal

  9. I have already developed a code to calculate the emission profile for a satellite with specific dynamics and composition… Proposed Research: MigratingDark Matter Satellites Fermi Gamma-ray Space Telescope • Observes high energy radiation • High resolution all-sky gamma-ray map • Satellites of DM are predicted to traverse the Milky Way • Constrain DM properties from: • Unique elongatedemission profiles of synchroton/ICS emission • Non-astrophysical energy spectra

  10. Msat.=106 Msol.,Rsat.=48 pc,sat.=300 km s-1,mDM=50 GeV, <>=3x10-26 cm3 s-1B=0.96, B+-=0.04 Current location of satellite Galactic Plane Proposed Research: MigratingDark Matter Satellites

  11. Proposed Research: Alternative Production Mechanisms ofSterile Neutrino Dark Matter XMM-Newton/Chandra X-ray Observatory • X-ray observations of Galaxies/Clusters • Significant in constraining Sterile Neutrino decay rates(s   + ) • Particularly in objects of low brightness • Utilise new data to constrain decay rates of Sterile Neutrino Dark Matter • D.Phil. Research, Dodelson - Widrow mechanism:

  12. Since Sterile Neutrinos produced via DW Mechanism can’t constitute all of the Dark Matter we should investigate alternative mechanisms that can. Proposed Research: Alternative Production Mechanism forSterile Neutrino Dark Matter • Constraints on Sterile Neutrino DM using HEAO-1 and SDSS data Fs<0.7! (A. Palazzo, D. Cumberbatch, A. Slosar & J. Silk, Phys. Rev. D 76 123005 (2007) )

  13. Summary • The immediate prospects for the indirect detection of DM are very promising, owing to the numerous experiments that are scheduled to release results over the next few years. • By combining my experience in this field, and the resources of the STFC and Sheffield’s Astroparticle Physics & Cosmology group, we can make a significant impact on the understanding of the nature of Dark Matter - one of the “STFC’sRoadmap Goals”. • Further, Sheffield's “Public Outreach” programme will allow me to engage in the wider public understanding of the nature of dark matter - whether it be through master-classes or school visits - a fundamental goal of the STFC.

  14. THANK YOU!

More Related