DES in 10 minutes DES in 7 minutes, Balrog in 3 minutes Megan - - PowerPoint PPT Presentation

des in 10 minutes
SMART_READER_LITE
LIVE PREVIEW

DES in 10 minutes DES in 7 minutes, Balrog in 3 minutes Megan - - PowerPoint PPT Presentation

FERMILAB-SLIDES-18-099-E DES in 10 minutes DES in 7 minutes, Balrog in 3 minutes Megan Splettstoesser Fermilab New Perspectives June 18, 2018 This document was prepared by [DES Collaboration] using the resources of the Fermi National


slide-1
SLIDE 1

DES in 7 minutes, Balrog in 3 minutes

1

DES in 10 minutes

Megan Splettstoesser Fermilab New Perspectives June 18, 2018

FERMILAB-SLIDES-18-099-E This document was prepared by [DES Collaboration] using the resources of the Fermi National Accelerator Laboratory (Fermilab), a U.S. Department of Energy, Office of Science, HEP User Facility. Fermilab is managed by Fermi Research Alliance, LLC (FRA), acting under Contract No. DE- AC02-07CH11359.

slide-2
SLIDE 2

Dark Energy Survey (DES) Collaboration

  • ~400 collaborators, of which ~70% are students and postdocs

2

slide-3
SLIDE 3

Dark Energy Survey Member Institutions

3

slide-4
SLIDE 4

Dark Energy Survey Science Goals

4

slide-5
SLIDE 5

Dark Energy Camera

5

slide-6
SLIDE 6

6

slide-7
SLIDE 7

DES Data Release 1: Galaxies

7

DES Collaboration [1]

slide-8
SLIDE 8

DES Data Release 1: Stars

8

DES Collaboration [1]

slide-9
SLIDE 9

9

Shipp et al. [2]

DES DR1 discovered 11 stellar streams

slide-10
SLIDE 10

DES Y1 constraints on cosmological parameters

10

DES Collaboration [3]

slide-11
SLIDE 11

Balrog

  • “digging too deeply and too greedily into data”
  • Understand systematic biases → useful for all DES working groups

11

DESDM pipeline schematic [4]

slide-12
SLIDE 12

Balrog injections

12

slide-13
SLIDE 13

13

slide-14
SLIDE 14

14

slide-15
SLIDE 15

Balrog validation

  • Inject fake objects onto real images. Compare truth, real, and injected catalogs
  • Agreement between real & injected and truth & injected?

15

Balrog overview [5]

slide-16
SLIDE 16

Summary

  • Tons of science is done with DES data (much more than discussed here)
  • Balrog has the potential to help DES utilize more of its data

16

DES Collaboration [4]

slide-17
SLIDE 17

Dark Energy Survey Working Groups

  • Galaxy Clusters
  • Supernovae
  • Weak Lensing
  • Theory and Combined Probes
  • Milky Way
  • Strong Lensing

17

  • Large-Scale Structure
  • Simulations
  • Redshift
  • Galaxy Evolution & QSO
  • Transients & Moving Objects
  • Science Release
  • Science Committee
slide-18
SLIDE 18

References

18

[1] https://arxiv.org/abs/1801.03181 [2] https://arxiv.org/abs/1801.03097 [3] https://arxiv.org/abs/1708.01530 [4] https://arxiv.org/abs/1801.03177 [5] https://arxiv.org/abs/1507.08336 Balrog software: https://github.com/sweverett/Balrog-GalSim, https://github.com/emhuff/Balrog Some validation tests: https://github.com/spletts/BalVal

slide-19
SLIDE 19

Extra Slides...

19

slide-20
SLIDE 20

Probes

  • Supernovae
  • Galaxy Clusters
  • Gravitational Lensing
  • Baryon Acoustic Oscillations

20

slide-21
SLIDE 21

Dark Energy Camera

21

Camera image [1]

slide-22
SLIDE 22

DES Y1 comparison to Planck

22

slide-23
SLIDE 23

Kilonova

23

https://arxiv.org/abs/1710.05459

slide-24
SLIDE 24

Science Verification Balrog Results

24

Reference []

slide-25
SLIDE 25

Validating Balrog -- Flux

25

slide-26
SLIDE 26

Validating Balrog -- Magnitude

26

slide-27
SLIDE 27

Validating Balrog -- Completeness

27

slide-28
SLIDE 28

Validating Balrog -- Color

28