Getting to the Fundamental Nature of Dark Matter with LSST Alex - - PowerPoint PPT Presentation

▶
getting to the fundamental nature of dark matter with
SMART_READER_LITE
LIVE PREVIEW

Getting to the Fundamental Nature of Dark Matter with LSST Alex - - PowerPoint PPT Presentation

Aug 30, 2023 32 likes •143 views

Getting to the Fundamental Nature of Dark Matter with LSST Alex Drlica-Wagner Wilson Fellow, Fermilab LSST2018 Project & Community Workshop August 16, 2018 #lsst2018 #lsst2018 LSST Project and Community Workshop 2018

slide-1
SLIDE 1

LSST Project and Community Workshop 2018 • Tucson • August 13 - 17

#lsst2018

LSST Project and Community Workshop 2018 • Tucson • August 13 - 17

#lsst2018

1

Getting to the Fundamental Nature of Dark Matter with LSST
 
 Alex Drlica-Wagner
 Wilson Fellow, Fermilab
 
 LSST2018 Project & Community Workshop
 August 16, 2018

slide-2
SLIDE 2

LSST Project and Community Workshop 2018 • Tucson • August 13 - 17

#lsst2018

2

Astrophysical Evidence of Dark Matter

Plank Collaboration (2016)

DARK MATTER DARK ENERGY ORDINARY MATTER

Observable
 Universe Large Scale
 Structure Clusters

  • f Galaxies

Individual Galaxies

Smaller Larger

Dark Matter

Composition of the Universe

slide-3
SLIDE 3

LSST Project and Community Workshop 2018 • Tucson • August 13 - 17

#lsst2018

3

?

D D SM SM Production
 Time

e.g., LHC

Indirect 
 Detection Time

e.g., Fermi-LAT

Direct Detection Time

e.g., Xenon1T

The Hunt for Dark Matter

slide-4
SLIDE 4

LSST Project and Community Workshop 2018 • Tucson • August 13 - 17

#lsst2018

4

The Hunt for Dark Matter

Message box example for short highlighted messages.

Dark Matter

Astrophysics provides the

  • nly robust, positive

measurement of dark matter.

Require Coupling
 with Standard Model

4

slide-5
SLIDE 5

LSST Project and Community Workshop 2018 • Tucson • August 13 - 17

#lsst2018

5

slide-6
SLIDE 6

LSST Project and Community Workshop 2018 • Tucson • August 13 - 17

#lsst2018

6

Visualizing the Dark Matter Parameter Space

https://lsstdarkmatter.github.io/dark-matter-graph/

slide-7
SLIDE 7

LSST Project and Community Workshop 2018 • Tucson • August 13 - 17

#lsst2018

7

  • Dark matter self-interaction

cross section

  • Probed by the shape and offset
  • f dark matter halos
  • Colliding cluster, cluster density

profiles, wobbling BCGs, etc.

  • Thermal dark matter

particle mass

  • Probed by the smallest dark

matter structures

  • Dark matter subhalos: strong

lens arc perturbations, stellar stream perturbations

Warm and Self-Interacting Dark Matter

slide-8
SLIDE 8

LSST Project and Community Workshop 2018 • Tucson • August 13 - 17

#lsst2018

8

  • Dark matter annihilation

cross section

  • Production of energetic standard

model particles in regions of high dark matter density

  • Physical target is the thermal relic

annihilation cross section (i.e., WIMP miracle)

  • Targets such as dwarf galaxies or

clusters of galaxies. All-sky cross correlation with galaxy catalogs

  • r dark matter mass maps.

Annihilating Dark Matter

slide-9
SLIDE 9

LSST Project and Community Workshop 2018 • Tucson • August 13 - 17

#lsst2018

9

  • Dark matter decay lifetime
  • Similar to annihilation: energetic

standard model particles

  • Milky Way halo, galaxy clusters,

all-sky cross correlation

Decaying Dark Matter

slide-10
SLIDE 10

LSST Project and Community Workshop 2018 • Tucson • August 13 - 17

#lsst2018

10

  • MACHO Dark Matter:
  • Cannot be included in the

cosmological baryon budge

  • Probed through gravitational

lensing (mostly)

  • Extend to higher masses with

long baseline and parallax lensing signals

  • Lower masses with high

sampling rate

MACHO Dark Matter

slide-11
SLIDE 11

LSST Project and Community Workshop 2018 • Tucson • August 13 - 17

#lsst2018

11

https://lsstdarkmatter.github.io/