Small Scale Systematics and Foregounds Daniel Green UC Berkeley
Signal Target: Information encoded in two distinct effects: •
Dampling Tail :
•
Shift of acoustic peaks:
Damping tail drives the constraints Damping tail is degenerate with !
Signal Target: (Ne↵ ) with BBN Consistency
0.08
!
T `Tmax = 1500 T `Tmax = 3000
0.07
! (Ne↵ )
!
0.06 0.05 0.04
! !
0.03 0.02
0
2
4
6
Temp Noise (µK-arcmin)
Information encoded in TE,
8
10
Signal Target: 0.14 E varying `Tmax , `EE max = 1500
!
TE varying `EE max , `max = 1500
0.12
! (Ne↵ )
!
0.10 0.08 0.06
! !
0.04 0.02 1500
2000
2500
3000
3500
`max
Information encoded in TE,
4000
4500
5000
Systematics Beam / Pointing calibration are dangerous Beam and pointing errors produce same tail Beam/Pointing: Damping: Measuring ! !
to the percent level means
Systematics Beam / Pointing calibration are dangerous (Ne↵ ) with BBN consistency ! 0.05
! ! ! ! !
(Ne↵ )
0.04 0.03 0.02 0.01 0.00 10
3
10
2
10
1
(beam calibration) (arcmin2)
100
Foregrounds Unresolved point sources contribute to noise Very Preliminary!
0.055
!
(Ne↵ )
! !
0.050 0.045 0.040
Louis et al. (2016)
0.035 no PS TT and EE PS only EE PS only TT PS
0.030
! !
0.025 0.020 0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
EE PS could improve significantly 5.0
Temp Noise (µK-arcmin)
See Erminia’s talk yesterday for different perspective
Sky Fraction Achieving target depends on sky fraction 0.055 1’ beam 2’ beam 3’ beam
0.050 0.045
! ! ! !
(Ne↵ )
!
0.040 0.035 0.030 0.025
0.1
0.2
0.3
0.4
0.5
fsky
0.6
0.7
0.8
For Discussion What should be the plan? •
What kind of information is need for systematics?
•
What systematics need to be addressed?
•
Are the foregrounds needed established?
•
What level of demonstration is needed?
•
Is sky fraction really just !
?
Extra Slides
Systematics Beam doesn’t affect the phase shift component (Ne↵ ) with Yp marginalization !
0.08 0.07
!
!
(Ne↵ )
!
0.06 0.05 0.04 0.03 0.02
! !
0.01 0.00 10
3
10
2
10
1
(beam calibration) (arcmin2)
100
Systematics Beam doesn’t affect the phase shift component (Yp) with Ne↵ marginalization
0.006
! 0.005
! ! ! ! !
(Yp)
0.004 0.003 0.002 0.001 0.000 10
3
10
2
10
1
(beam calibration) (arcmin2)
100
Systematics These needs seem achievable ! ! ! ! ! !
Hasselfield et al. (2013)
Systematics These needs seem achievable ! ! ! ! ! !
Hasselfield et al. (2013)
