Accurate astrophysics. Correct cosmology.
An international meeting in London, 13—16 July 2015.
Progress in cosmology increasingly requires a strong quantitative handle on astrophysical contaminants. Equally, many astrophysically interesting processes can be constrained from cosmological survey data. This meeting brought together experts in a range of fields to take a critical look at the relationship between accurate astrophysics and correct cosmology.
Thanks to all the speakers, presenters and participants who made the meeting a success. The schedule for the week is posted below. This site will remain online with slides from the presentations. Participant logistical information is archived in our welcome pack. (See also our code of conduct.)
Not to forget all the logistics that needed to be performed in order for the event to take place. From moving equipment, positioning furniture and other items to be relocated. All that was fluently and swiftly done by the guys from Get man and van which simply did their best and saved us a lot of time and financial resources if we would have gone with some of the bigger and most popular removal companies. Thank you guys!The group photo is now available, and Renée Hložek summarised the meeting on storify.
Monday
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09:30 |
Registration at Royal Astronomical Society, Piccadilly. See pack for directions. |
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10:00 |
Welcome from Nick Brook, |
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Large scale structure10:00 – 12:30 Session chair Ofer Lahav |
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10:15 |
Licia Verde |
From precision cosmology to accurate cosmology [pdf] |
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10:45 |
Elise Jennings |
Precision tests of dark energy: modelling large scale structure dynamics & parameter estimation [pdf] |
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11:00 |
Tea/coffee break |
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11:30 |
Mark Cropper |
The Euclid Mission: accuracy and precision [ppt] |
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12:00 |
Dragan Huterer |
Growth of structure: the next frontier [pdf] |
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12:30 |
Lunch break |
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14:00 - 15:15 Session chair Hiranya Peiris |
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14:00 |
Risa Wechsler |
Accurate Modeling of Galaxies for Precision Cosmology from Galaxy Surveys |
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14:30 |
Anže Slosar |
Latest results from the BOSS experiment [pdf] |
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14:45 |
Raul Angulo |
A new way of exploiting future cosmological measurements [pdf] |
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15:00 |
Darren DePoy |
Spectrophotometric calibration techniques [pdf] |
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15:15 |
Poster session (all topics) ; chair Lorne Whiteway [pdf] |
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15:40 |
Tea/coffee break |
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16:15 - 17:00 Session chair Licia Verde |
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16:15 |
Wildcard talk: |
Satellite galaxy-galaxy lensing [pdf] |
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16:30 |
Structured discussion |
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17:00 |
End |
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Tuesday
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09:30 |
RAS opens |
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Cosmic microwave background09:45 – 11:00 Session chair Hiranya Peiris |
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09:45 |
Renée Hložek |
Constraining primordial models and astrophysical processes with CMB measurements: increasing both accuracy and precision. [pdf] |
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10:15 |
Niels Oppermann |
Bayesian CMB foreground separation with a correlated log-normal model [pdf]
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10:30 |
Clive Dickinson |
CMB foregrounds – just how bad are they? [pdf] |
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11:00 |
Tea/coffee break |
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11:30 – 12:30 Session chair Renée Hložek |
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11:30 |
Céline Combet |
Foreground-related systematic effects in the Planck-HFI polarisation data |
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SZ, clusters, dark matter and astrophysics
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11:45 |
Alireza Hojjati |
Weak lensing, thermal SZ effect and baryons [pdf] |
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12:00 |
Bruno Moraes |
The thermal SZ emission of SDSS DR8 redmapper galaxy clusters |
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12:15 |
Stefano Ettori |
The mass in galaxy clusters from X-ray/SZ observables [pdf] |
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12:30 |
Jorg Dietrich |
Constraining the mass-YX scaling relation and its evolution using weak-lensing observations of high-mass clusters discovered by SPT [pdf] |
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12:45 |
Lunch break |
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14:00 – 15:30 Session chair Carlos Frenk |
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14:00 |
Tesla Jeltema |
Calibrating the cluster richness-mass relation for the dark energy survey [ppt] |
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14:15 |
Mario Bonamigo |
Triaxial galaxy clusters: simulating measurements and measuring simulations [pdf] |
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14:30 |
Tracy Slatyer |
Evidence for unresolved point sources in the GeV gamma-ray excess [pdf] |
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15:00 |
Elena Pierpaoli |
Revealing the nature of dark matter with multi-wavelength observations of the Galactic centre [ppt] |
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15:30 |
Tea/coffee break |
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16:00 – 17:15 Session chair Dragan Huterer |
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16:00 |
Nina Roth |
Genetically modified galaxy formation [pdf] |
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16:15 |
Carlos Frenk |
Is CDM ruled out? |
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16:45 |
Structured discussion |
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17:15 |
End of scientific sessions |
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At 7pm, we are running a public session at the Royal Institution (directions in the participant pack). If you have chosen to attend this event, you should have received a ticket with your welcome pack. It’s essential to bring this with you as this event is open to the public and the door staff will only let in people with a ticket.
Wednesday
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09:30 |
RAS opens |
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21cm, neutral hydrogen and reionization09:45 – 11:00 Session chair Jonathan Pritchard |
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09:45 |
Benedetta Ciardi |
Prospects for LOFAR detections [pdf] |
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10:15 |
Dijana Vrbanec |
21cm—galaxy cross-power spectrum – can we observe it with LOFAR and Subaru’s Hyper Suprime-Cam? [pdf] |
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10:30 |
Michael Walther |
Constraints on the IGM thermal history from the line-of-sight power spectrum of the Lyman-alpha forest [pdf] |
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10:45 |
Girish Kulkarni |
Accurate 21cm signal forecasts from high dynamical range simulations of inhomogeneous reionization [pdf] |
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11:00 |
Tea/coffee break |
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11:30 – 12:30 Session chair Benedetta Ciardi |
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11:30 |
Matt McQuinn |
21cm cosmology and reionization [pdf] |
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12:00 |
Laura Wolz |
Intensity mapping cross-correlations: connecting the largest scales to galaxy evolution [pdf] |
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12:15 |
Mathieu Remazeilles |
Astrophysical foregrounds and component separation in 21cm observations [pdf] |
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12:30 |
Lunch break |
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Lensing (Part I)14:00 – 17:00 Session chair Benjamin Joachimi |
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14:00 |
Henk Hoekstra |
Can we do correct cosmology with weak lensing? [pdf] |
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14:30 |
Massimo Viola |
Properties of GAMA galaxies and groups from a lensing analysis of the KIDS survey [pdf] |
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14:45 |
Josh Meyers |
Impact of chromatic PSF effects on weak lensing [pdf] |
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15:00 |
Hendrik Hildebrandt |
RCSLenS – a 1000 sq. degree weak lensing survey – early science and astrophysical systematics [pdf] |
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15:30 |
Tea/coffee break |
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16:00 |
Ken Osato |
Impact of baryonic processes on weak lensing higher-order statistics and parameter bias [pdf] |
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16:15 |
Elisa Chisari |
Intrinsic alignments and CMB lensing [pdf] |
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16:30 |
Structured discussion |
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17:00 |
End of scientific sessions |
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The conference dinner will be held at 7pm at the Royal Institution. The location is marked on the map in the participant pack. Please also refer to the pack’s information about seating.
Thursday
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09:30 |
RAS opens |
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Supernovae09:45 – 11:00 Session chair Mark Sullivan |
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09:45 |
Adam Riess |
Expansion of the Universe seen by Hubble |
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10:15 |
Mickael Rigault |
Environmental dependencies in type IA supernovae distances and their effect on measurements of the Hubble constant [pdf] |
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10:30 |
Michelle Lochner |
Supernova classification with machine learning [pdf] |
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10:45 |
Ed Macaulay |
Insights from supernovae lensing [pdf] |
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11:00 |
Tea/coffee break |
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11:30 – 12:30 Session chair Michelle Lochner |
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11:30 |
Mark Sullivan |
The impact of astrophysics on supernova cosmology [pdf] |
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12:00 |
Bob Nichol |
New supernova cosmology [pdf] |
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12:30 |
Lunch break |
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14:00 – 15:30 Session chair Tom Kitching |
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14:00 |
Roberto Trotta |
Bayesian hierarchical models for SN1A cosmology [pdf] |
Lensing (Part II) |
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14:15 |
Frederic Courbin |
Constraining cosmology with quasar time delays [pdf] |
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14:30 |
Adriano Agnello |
Time-delay cosmography with STRIDES |
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14:45 |
Thomas Collett |
Strong lensing tomography: probing w with multiple source-plane strong lenses [pdf] |
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15:00 |
Jonathan Blazek |
The intrinsic alignment of galaxies and precision weak lensing [pdf] |
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15:15 |
David Kirkby |
Olber’s paradox revisited: effects of overlapping sources on cosmic shear estimation [pdf] |
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15:30 |
Tea/coffee break |
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16:00 |
Gary Bernstein |
Accurate measurements for accurate cosmology [pdf] |
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16:30 |
Tom Kitching |
Current cosmic shear cosmology is either not accurate or not correct [pdf] |
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16:45 |
Structured discussion |
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17:15 |
End of conference |
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Organizing committee
- Richard Ellis (scientific coordinator)
- Andrew Pontzen (local & scientific coordinator)
- Hiranya Peiris
- Benjamin Joachimi
- Ofer Lahav
