Theme: Tensions in Cosmology

14:00 – 14:25 **Andrew Jaffe **(Imperial): Planck 2018 results and tensions with external data sets

14:25 – 14:50 **Daniel Mortlock** (Imperial): Local measurements of H_0

14:50 – 15:15 **Pablo Lemos** (UCL): Quantifying tension in cosmology

15:15 – 15:45 Coffee break at the RAS

15:45 – 16:10 **Benjamin Joachimi** (UCL): Weak lensing measurements and the sigma_8 tension

16:10 – 16:35 **Eugene Lim** (King’s): Tensions in inflationary cosmology

16:35 – 17:00 Open discussion

# 24th January 2019 – London Cosmology Discussion Meeting

Theme: Cosmological probes of new physics

14.00-14.05: Updates from the organisers

14.05-14.40: **Miguel Escudero** (KCL) – “Relaxing the Hubble tension with a very light L_\mu – L_\tau gauge boson”

14.40-15.15: **Stephen Stopyra** (UCL) – “Inflationary vacuum decay as a probe of high energy physics”

15.15-15.45: Coffee break

15.45-16.20: **Alistair Wickens** (KCL) – “Gravitational waves from hot and cold hidden sectors”

16.20-16.55: **Charalambos Pittordis** (QMUL) – “Testing modified gravity theories via wide binaries and GAIA”

16.55-17.00: Discussion

# 29th November 2018 – London Cosmology Discussion Meeting

Theme: Intensity Mapping and Reionisation

14:00-14:30: **Alkistis Pourtsidou** (QMUL) – Cosmology with HI intensity mapping

14:30-15:00: **Thomas Binnie** (IC) – The Feasibility of EoR model selection with up and coming Interferometric Experiments

15:00-15:45: Coffee break/discussions

15:45-16:10: **Romain Meyer** (UCL) – Probing the galaxies reionising the IGM at 5 < z < 6

16:10-16:40: **Adélie Gorce** (IC) – The triangle correlation function of phases: a new tool to study the Epoch of Reionisation

16:40-17:00: Discussion led by **Jonathan Pritchard** (IC)

# 25th October 2018 – London Cosmology Discussion Meeting

25th October 2018 – London Cosmology Discussion Meeting

Theme: Large Scale Structure Formation

14:00 – 14:20 – **Meet the Groups**

14:20 – 15:00 – **Diego Blas (KCL)**:

Perturbative Approaches to Large Scale Structure.

15:00 – 15:40 – **Tea/Coffee break**

15:40 – 16:10 – **Louis Coates (QMUL)**:

Relativistic ray tracing in gevolution.

16:10 – 16:40 – **Luisa Lucie-Smith (UCL)**:

Machine learning dark matter halo formation.

16:40 – 17:00 **Questions/discussion**

# 7th December 2017 – London Cosmology Discussion Meeting

Theme: Gravitational Waves

# 26th October 2017 – London Cosmology Discussion Meeting

Theme: Inflation

Four talks on inflation

Eugene Lim : Inhomogeneous inflation

Tommi Markkanen: Higgs dynamics during inflation

***Tea/Coffee break***

John Ronayne: Numerical simulations of inflation with curved field space

Selim Hotinli: Phenomenology of many-field inflation

2pm – 5pm at RAS

# 30th March 2017 – London Cosmology Discussion Meeting

The first talk is by our guest speaker, **Nick Kaiser** (Hawaii) – *“Why there is no Newtonian backreaction?”*

Followed by two talks by PhD students:

**Niall Jeffrey** (UCL) – *“Mass mapping from weak lensing”*

**Sophia Goldberg** (QMUL) – *“Relativistic large-scale structure” *

# 2nd February 2017 – London Cosmology Discussion Meeting (Python + Milestones in cosmology)

**Roberto Trotta**–

*“Introduction to Bayesian Hierarchical Modelling with Python”*

**David Mulryne**–

*“Numerical evaluation of the bispectrum in multifield inflation and the PyTransport package”*

**Ofer Lahav**and

**Carlo Contaldi**.

# 8th December 2016 – London Cosmology Discussion Meeting (Imprints of Broken Symmetries in the CMB)

Two talks on the imprints of broken symmetries (or lack thereof) in the CMB.

First Session:

– **Carlo Contaldi** (Imperial) – *”Parity violations in polarization”*

-Discussion

****Break****

Second Session:

–**Daniela Saadeh** (UCL) –* ”How isotropic is the Universe?”*

-Discussion

# 27th October 2016 – London Cosmology Discussion Meeting (Meet the Groups)

Jamboree ‘Meet the Groups’ session where people from QM, UCL, IC and UCL present 1-2 introductory slides to briefly talk about their work.

—-

First session : 14:00 – 15:00 QM and KCL

Break : 15:00 – 15:40

Second session : 15:40 – 17:00 IC and UCL (P&A and MSSL)

—-

QM’s slides: qm_lcdm

KCL’s slides: kcl_lcdm

IC’s slides: ic_lcdm

UCL P&A’s slides: ucl_pa_lcdm

UCL MSSL’s slides: ucl_mssl_lcdm