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Consistency of cosmological datasets: evidence for new physics?

Consistency of cosmological datasets meeting
When May 28, 2018 09:00 AM to
Jun 01, 2018 01:00 PM
Where Kavli Institute
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Consistency of Cosmological Datasets: Evidence for new Physics?

  • Date: Monday 28th May - Friday 1st June 2018
  • Meeting venue: Kavli Institute for Cosmology Cambridge
  • Accommodation: Booked for all invited external participants for the nights of Sunday 27th May to Thursday 31st May inclusive at the Moller Centre, Churchill College 

Data from Planck are beautifully consistent with the ΛCDM cosmology. Yet a number of other astrophysical datasets appear to be in tension with the cosmological parameters measured by Planck. Examples include local measurements of the Hubble constant, the amplitude of the mass fluctuations inferred from weak galaxy lensing and cluster abundances and the high redshift baryon oscillation acoustic scale measurements from the Lyα forest. The aim of the workshop is to bring together leading experts and key young people working on these topics to engage in a frank discussion on whether these tensions exist, whether they are symptoms of systematics in the data, or whether they indicate the need for new physics. 

Provisional Programme

Monday

8:30-9:15 Registration in the foyer of the Hoyle Building

A set of reviews 30 mins talk + 15 mins discussion in the Sackler Lecture Theatre, Hoyle Building

   9.15-10.00   George Efstathiou         Why are we here?
  10.00-10.45   Adam Riess  Direct Measurements of H0

  10-45-11.15   Coffee break

  11.15-12.00   Silvia Galli        Cosmology from the CMB
  12.00-12.45   Daniel Eisenstein   LSS/BAO

  12.45-2pm      Lunch in the KICC for registered participants

  2.00-2.45     Catherine Heymans   Weak lensing
  2.45-3.30     Ryan Cooke         BBN

  3.30-4.00     Coffee break

  4.00-4.45     Anastasia Fialkov  21cm absorption at high redshift.
  4.45-5.30     Boris Leistedt    Statistical analysis of cosmological datasets
  5.30-6.15     Enrico Pajer       A Theorist's View of Lambda CDM

  6.15-7.30     Informal wine and nibbles Kavli atrium
 

 The rest of the meeting will take place in KICC, and default session times and breaks are:

          Morning Session 1  (MS1)    9.00 -- 10.45
          Coffee break               10.45 -- 11.15
          Morning Session 2  (MS2)   11.15 -- 12.45
          Lunch                      12.45 --  2.00
          Afternoon Session 1 (AS1)   2.00 --  3.30
          Coffee Break                3.30 --  4.15
          Afternoon Session 2 (AS2)   4.15 --  6.00

 On Thursday  Wendy Freedman will give the IoA Colloqium talk
 (4-5pm). On Thursday, the workshop sessions will therefore end at
 the afternoon coffee  break.
 

Tuesday

All day: LSS   Group leader  Daniel Eisenstein  (loc assistant George Efstathiou)

  • 9.00 - 9.25 Recent results in galaxy/quasar BAO/RSD -- Pauline Zarrouk (20+5)
  • 9.25 - 9.50 Systematics in galaxy BAO -- discussion (25)
  • 9.50 - 10.15 Lyman alpha BAO -- Andreu Font-Ribera (20+5)
  • 10.15 - 10.40 Systematics in Lyman alpha BAO -- discussion (25)
  • 10.40 - 11.15 Coffee
  • 11.15 - 11.40 RSD Systematics and Mitigations -- Florian Beutler (20+5)
  • 11.40 - 12.05 Modeling Galaxy Bias -- Tobias Baldauf (20+5)
  • 12.05 - 12.30 LSS Mocks and Covariances -- Marc Manera (20+5)
  • 12.30 - 12.45 Continued discussion of Galaxy Bias (15)
  • 12.45 - 2.00 Lunch
  • 2.00 - 2.25 Beyond the two-point function -- James Fergusson (20+5)
  • 2.25 - 2.50 Multi-tracer and Counts-in-Cells -- Cora Uhlemann (20+5)
  • 2.50 - 3.15 Intensity Mapping and Large-Scale Structure -- Girish Kulkarni (20+5)
  • 3.15 - 3.30 Discussion of Non-Gaussianity and New Statistics (15)
  • 3.30 - 4.15 Coffee
  • 4.15 - 4.40 Preparing for Euclid -- Dida Markovic (20+5)
  • 4.40 - 5.05 DES and DESI -- Ofer Lahav (20+5)
  • 5.05 - 6.00 Continued discussion of LSS: neutrinos, non-Gaussianity, and future LSS (55)
  • 6.00-- Wine and snacks

Wednesday

AM: CMB    Group Leader Lloyd Knox  (loc assistant Blake Sherwin)

PM:   H0   Group leader  Adam Riess    (loc assistant  Anthony Lasenby)

Evening: Conference Dinner at Trinity Hall 

Thursday

9:00am-3:30pm

Weak Lensing   Group Leader Alexie Leauthaud (loc assistant Anthony Challinor)

4pm: Colloquium  Wendy Freedman Towards a New Calibration of the Hubble Constant 

Friday

AM: 

BBN  Group Leader Ryan Cooke  (loc assistant Steven Gratton)

  • Max Pettini - Pinning down the primordial deuterium abundance at the sub percent level
  • Ryan Cooke - A novel measurement of the primordial helium abundance
  • Discussion Session - Neutrino Physics in BBN

Theory   Group Leader Hiranya Peiris   (loc assistant Paul Shellard)

  • Ed Copeland (25+5 mins)
  • Will Handley (10+5 mins) - Inflation from Planck
  • David Marsh (10+5 mins)

12.30--1.00pm      Workshop Summary. Ofer Lahav

End of Meeting

Confirmed External Participants

  • Graeme Addison
  • Florian Beutler
  • Sebastian Bocquet
  • Erminia Calabrese
  • Stefano Casertano
  • Sandrine Codis
  • Ryan Cooke
  • Stijn Debackere
  • Daniel Eisenstein
  • Anastasia Fialkov
  • Andreu Font-Ribera
  • Wendy Freedman
  • Silvia Galli
  • Evan Grohs
  • Catherine Heymans
  • Lloyd Knox
  • Elisabeth Krause
  • Ofer Lahav
  • Alexie Leauthaud
  • Boris Leistedt
  • Antony Lewis
  • Marc Manera
  • Dida Markovic
  • Enrico Pajer
  • Hiranya Peiris
  • Jean-Loup Puget
  • Adam Riess
  • Tim Schrabback
  • Douglas Scott
  • Elena Sellentin
  • Pauline Zarrouk

Confirmed Local Participants

  • Matt Auger
  • Tobias Baldauf
  • Benjamin Beringue
  • Anthony Challinor
  • Philip Clarke
  • Omar Darwish
  • George Efstathiou
  • Benjamin Giblin
  • Steven Gratton
  • Martin Haehnelt
  • Will Handley
  • Michael Hobson
  • Johnathan Hung
  • Lucas Hergt
  • Anthony Lasenby
  • Anton Baleato Lizancos
  • Pablo Lemos Portela
  • Kaisey Mandel
  • David Marsh
  • Daan Meerburg
  • Daniel Muthukrishna
  • Yvette Perrott
  • Max Pettini
  • Paul Shellard
  • Blake Sherwin
  • Bjoern Soergel
  • Wuhyun Son
  • Cora Uhlemann
  • Benjamin Wallisch
  • Inigo Zubeldia-Lafuente

​Organising Committee

  • Anthony Challinor
  • George Efstathiou
  • Steven Gratton
  • Catherine Heymans
  • Anthony Lasenby
  • James Parke
  • Hiranya Peiris
  • Paul Shellard
  • Blake Sherwin

Contact Information

To contact the organisers, please email consistency2018@ast.cam.ac.uk .

Acknowledgements

We gratefully acknowledge funding from the Kavli Foundation, from a grant from the Templeton Foundation held by Prof. Martin Rees, and from Intel.

 

Image credits: Daniel Eisenstein and the SDSS-III collaboration; ESA.

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