SZ clusters and the amplitude of matter fluctuations
A. Blanchard, Z. Sakr, S. Ilić
ArXiv:1908.00163

Chicago, October 5th, 2019

Cosmic Controversies 05/10/2019

Planck results...

Cosmic Controversies 05/10/2019

Planck results...

Cosmic Controversies 05/10/2019

Planck results...

Cosmic Controversies 05/10/2019

The Planck clusters-CMB tension

Cosmic Controversies 05/10/2019

The Planck clusters-CMB tension

The ”tension” corresponds to a deﬁcit by a factor ∼ 3.
Cosmic Controversies 05/10/2019

The Planck clusters-CMB tension

The ”tension” corresponds to a deﬁcit by a factor ∼ 3.
SZ: ≈ 6σ
Cosmic Controversies 05/10/2019

The Planck clusters-CMB tension: Issues

Cosmic Controversies 05/10/2019

The Planck clusters-CMB tension: Issues

Pb in the data (selection,...)

Cosmic Controversies 05/10/2019

The Planck clusters-CMB tension: Issues

Pb in the data (selection,...)

Astrophysical modeling. Calibration, ...

Cosmic Controversies 05/10/2019

The Planck clusters-CMB tension: Issues

Pb in the data (selection,...)

Astrophysical modeling. Calibration, ...

New physics?

Cosmic Controversies 05/10/2019

Fitting the X-ray temperature function at z ∼ 0.05

Ilic, Blanchard & Douspis 2015

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The cluster-CMB tension (in ΛCDM)

No sign of systematics between x-ray clusters (z ∼ 0.05) and SZclusters (z ∼ 0.25)

Cosmic Controversies 05/10/2019

How strong is the tension ?
X-ray

Sakr, Ilic & Blanchard(2018)

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How strong is the tension ?
X-ray

Sakr, Ilic & Blanchard(2018)
From ≥ 4σ down to...
Cosmic Controversies 05/10/2019

How strong is the tension ?
X-ray

Sakr, Ilic & Blanchard(2018)
From ≥ 4σ down to...0!
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What could be the solution?

Astrophysics

Cosmic Controversies 05/10/2019

What could be the solution?

Astrophysics
Calibration issue.

Cosmic Controversies 05/10/2019

What could be the solution?

Astrophysics
Calibration issue.
New physics

Cosmic Controversies 05/10/2019

What could be the solution?

Astrophysics
Calibration issue.
New physics
Massive neutrinos (change P(k), growth rate, ...)

Cosmic Controversies 05/10/2019

What could be the solution?

Astrophysics
Calibration issue.
New physics
Massive neutrinos (change P(k), growth rate, ...)
Modiﬁcation in the gravitational sector (MG).

Cosmic Controversies 05/10/2019

Effect of the presence of massive neutrinos

X-ray
Adding BAO (green), adding Lymanα (red), combined (grey)

Cosmic Controversies 05/10/2019

Effect of the presence of massive neutrinos

X-ray
Adding BAO (green), adding Lymanα (red), combined (grey)

Cosmic Controversies 05/10/2019

Effect of the presence of massive neutrinos

X-ray
Adding BAO (green), adding Lymanα (red), combined (grey)

Cosmic Controversies 05/10/2019

Effect of the presence of massive neutrinos

X-ray
Adding BAO (green), adding Lymanα (red), combined (grey)

Cosmic Controversies 05/10/2019

Effect of the presence of massive neutrinos

X-ray
Adding BAO (green), adding Lymanα (red), combined (grey)

Massive neutrinos do not seem to help.

Cosmic Controversies 05/10/2019

Modifying growth rate
X-ray
Growth rate with a γ parametrization.

Cosmic Controversies 05/10/2019

Modifying growth rate
X-ray
Growth rate with a γ parametrization.

Cosmic Controversies 05/10/2019

Modifying growth rateX-ray
Growth rate with a γ parametrization.

Robust correlation between γ and ATM .
Cosmic Controversies 05/10/2019

Final comparison (X-ray)
Planck CMB calibration versus Planck Clusters calibration

Cosmic Controversies 05/10/2019

Final comparison (X-ray)
Planck CMB calibration versus Planck Clusters calibration

Cosmic Controversies 05/10/2019

Final comparison (X-ray)
Planck CMB calibration versus Planck Clusters calibration

Planck cluster calibration if conﬁrmed would favors MG...
Cosmic Controversies 05/10/2019

Modifying growth rate & massive neutrinos
X-ray+SZFree σ8 .
CMB + SZ + X, free σ

1.50

81.25(1− b)SZ

1.00
0.75
0.50
0.25
0.00

24Ilic, Sakr & Blanchard(2019)
Free σ8Cosmic Controversies 05/10/2019

68ATM1012Modifying growth rate & massive neutrinos
X-ray+SZ
Growth rate with a γ parametrization.
CMB + SZ + X, free σ
CMB + SZ + X, free mν , free γ

1.50

81.25(1− b)SZ

1.00
0.75
0.50
0.25
0.00

24Ilic, Sakr & Blanchard(2019?)
Free γ and free Σmν
Cosmic Controversies 05/10/2019

68ATM

1012

Modifying growth rate & massive neutrinos
X-ray+SZ
Growth rate with a γ parametrization.
CMB + SZ + X, free σ
CMB + SZ + X, free mν , free γ
CMB + SZ + X, free γ

1.50

8

1.25(1− b)SZ

1.00
0.75
0.50
0.25
0.00

24Ilic, Sakr & Blanchard(2019)
Free γ
Cosmic Controversies 05/10/2019

68ATM

1012

Modifying growth rate & massive neutrinos
X-ray+SZ
Growth rate with a γ parametrization.
CMB + SZ + X, free σ
CMB + SZ + X, free mν , free γCMB + SZ + X, free γ
CMB + SZ + X, free mν

1.50

81.25(1− b)SZ

1.00
0.75
0.50
0.25
0.00

24Ilic, Sakr & Blanchard(2019)
Free Σmν
Cosmic Controversies 05/10/2019

68ATM1012

Modifying growth rate & massive neutrinos
X-ray
Growth rate with a γ parametrization.
CMB + SZ + X, free σ
CMB + SZ + X, free mν , free γ
CMB + SZ + X, free γ
CMB + SZ + X, free mνCMB + SZ + X

1.50

81.25(1− b)SZ

1.00
0.75
0.50
0.25
0.00

24Ilic, Sakr & Blanchard(2019)
LCDM
Cosmic Controversies 05/10/2019

68ATM1012

Modifying growth rate & massive neutrinos

X-ray
Growth rate with a γ parametrization.

15.0

CMB + X, freemν , free γ

12.5

ATM

10.0
7.5
5.0
2.5
0.0

−1.6 −0.8 0.0

0.8

γMG0

1.6

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2.4

3.2

Modifying growth rate & massive neutrinos

X-ray
Growth rate with a γ parametrization.

15.0

CMB + X, freemν , free γ

1.20

12.50.90(1 − ) SZ

7.5bATMmν , free γ

1.05

10.00.75

5.00.60

2.50.0

CMB + SZ, free

0.45

−1.6 −0.8 0.0

0.8

γMG01.6

Cosmic Controversies 05/10/2019

2.4

3.2

0.30
0.00

0.25

0.50

0.75

γMG0

1.00

1.25

Modifying growth rate & massive neutrinos

X-ray+SZ
Growth rate with a γ parametrization.

15.0
12.5

CMB + X, free mν , free γ
CMB + SZ + X, free mν , free γ

1.20
1.050.90(1 − ) SZ

7.5bATM

10.00.75

5.00.60

2.50.0

CMB + SZ, free mν , free γ
CMB + SZ + X, free mν , free γ

0.45−1.6 −0.8 0.00.8γMG0

1.6

Cosmic Controversies 05/10/2019

2.4

3.20.30
0.00

0.25

0.50

0.75

γMG0

1.00

1.25

Modifying growth rate & massive neutrinos
X-ray+SZ
Growth rate with a γ parametrization.

15.0
12.5

CMB + X, free mν , free γ
CMB + SZ + X, free mν , free γ
CMB + SZ + X, free γ

1.20
1.05
0.90

(1 − ) SZ

7.5bATM

10.00.75

5.00.60

2.50.0

CMB + SZ, free mν , free γ
CMB + SZ + X, free mν , free γ
CMB + SZ + X, free γ

0.45−1.6 −0.8 0.00.8

γMG01.6

2.4

3.2

LCDM: (1 − b)SZ = 0.58+0.029−0.034

Cosmic Controversies 05/10/2019

0.30

0.00 0.25 0.50 0.75 1.00 1.25

γMG0

Conclusion

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Conclusion

CMB-cluster counts tension is real for
1 − b ∼ 0.8

Cosmic Controversies 05/10/2019

Conclusion

CMB-cluster counts tension is real for
1 − b ∼ 0.8
Advocating massive neutrinos is not ansolution!

Cosmic Controversies 05/10/2019

Conclusion

CMB-cluster counts tension is real for
1 − b ∼ 0.8
Advocating massive neutrinos is not ansolution!
In all “simple” scenarios 1 − b ∼ 0.6 ispreferred.

Cosmic Controversies 05/10/2019

Conclusion

CMB-cluster counts tension is real for
1 − b ∼ 0.8
Advocating massive neutrinos is not ansolution!
In all “simple” scenarios 1 − b ∼ 0.6 ispreferred.
1 − b ∼ 0.8 would need some very exotic
physics!
Cosmic Controversies 05/10/2019

Conclusion

CMB-cluster counts tension is real for
1 − b ∼ 0.8
Advocating massive neutrinos is not ansolution!
In all “simple” scenarios 1 − b ∼ 0.6 ispreferred.
1 − b ∼ 0.8 would need some very exotic
physics!
Thank You
Cosmic Controversies 05/10/2019