# Staff Profile

## Dr Cora Uhlemann

### Lecturer - Applied Mathematics

- Email: cora.uhlemann@ncl.ac.uk
- Personal Website: https://www.staff.ncl.ac.uk/corauhlemann/

I am a theoretical cosmologist working on modelling the cosmic large-scale structure and using it to probe fundamental physics and cosmology.

Before I came to Newcastle, I was a Research Associate in the group of Paul Shellard at The Stephen Hawking Centre for Theoretical Cosmology in Cambridge and a Research Fellow at Fitzwilliam College (2017-2019). Earlier, I was a PostDoc at the Delta Institute for Theoretical Physics in the group of Enrico Pajer at Utrecht University (2015-2017). I finished my PhD in Theoretical Cosmology in 2015 at the LMU Munich, supervised by Stefan Hofmann.

Together with Ulrike Böhm, I am running the facebook page for female physicists, called 'Physikerinnen'. Every week, we highlight an excellent woman in physics (from student to professor) as 'female physicist of the week'.

If you want to learn more about me and my research, I answered some questions for:

My work aims at unravelling the mysteries of our universe with cosmological data. Galaxy surveys such as Euclid will map the galaxy distribution covering unprecedented vast areas of the sky and long periods of cosmic history by measuring distances & shapes of billions of galaxies tracing the cosmic large scale structure.

My research is at the heart of the precision cosmology challenge: Modelling nonlinear gravitational dynamics and extracting fundamental physics from galaxy clustering. Gravitational clustering describes the formation of bound objects from initially small perturbations. Much of the physical information is hidden on small scales, on which matter has clustered nonlinearly and is not well characterised by Gaussian statistics. I develop analytical methods for the nonlinear regime that can be combined with numerical simulations and design clustering statistics that are statistically informative and robustly predictable to extract physical insights from galaxy surveys.

**2019-2020**

Semester 2: MAS2603 - Group Project Module for Stage 2 Mathematics students.

**2020-2021**

Semester 1: General Relativity for Stage 4 Mathematics & Physics students

Semester 2: Dynamics for Stage 1 Mathematics & Physics students

**2021-2022**

Semester 1: General Relativity for Stage 4 Mathematics & Physics students

Semester 2: Dynamics for Stage 1 Mathematics & Physics students

- Uhlemann C, Codis S, Pichon C, Bernardeau F, Reimberg P. Back in the saddle: Large-deviation statistics of the cosmic log-density field.
*Monthly Notices of the Royal Astronomical Society*2016,**460**(2), 1529-1541. - Codis S, Pichon C, Bernardeau F, Uhlemann C, Prunet S. Encircling the dark: constraining dark energy via cosmic density in spheres.
*Monthly Notices of the Royal Astronomical Society*2016,**460**(2), 1549-1554. - Uhlemann C, Kopp M. Coarse-grained cosmological perturbation theory: stirring up the dust model.
*Physical Review D*2015,**91**(8), 084010. - Uhlemann C, Kopp M, Haugg T. Edgeworth streaming model for redshift space distortions.
*Physical Review D*2015,**92**(6), 063004. - Kopp M, Uhlemann C, Haugg T. Newton to Einstein - dust to dust.
*Journal of Cosmology and Astroparticle Physics*2014,**2014**(3), 018. - Uhlemann C, Kopp M, Haugg T. Schrödinger method as N-body double and UV completion of dust.
*Physical Review D*2014,**90**(2), 023517. - Barthelemy A, Codis S, Uhlemann C, Bernardeau F, Gavazzi R. A nulling strategy for modelling lensing convergence in cones with large deviation theory.
*Monthly Notices of the Royal Astronomical Society*2020,**492**(3), 3420-3439. - Uhlemann C, Rampf C, Gosenca M, Hahn O. A semiclassical path to cosmic large-scale structure.
*Physical Review D*2019,**99**, 083524. - Uhlemann C, Pichon C, Codis S, L'Huillier B, Kim J, Bernardeau F, Park C, Prunet S. Cylinders out of a top hat: counts-in-cells for projected densities.
*Monthly Notices of the Royal Astronomical Society*2018,**477**(2), 2772-2785. - Leicht O, Uhlemann C, Villaescusa-Navarro F, Codis S, Hernquist L, Genel S. Extreme Spheres: Counts-in-cells for 21cm intensity mapping.
*Monthly Notices of the Royal Astronomical Society*2019,**484**(1), 269-281. - Uhlemann C. Finding closure: approximating Vlasov-Poisson using finitely generated cumulants.
*Journal of Cosmology and Astroparticle Physics*2018,**2018**(10), 030. - Uhlemann C, Feix M, Codis S, Pichon C, Bernardeau F, L'Huillier B, Kim J, Hong SE, Laigle C, Park C, Shin J, Pogosyan D. A question of separation: disentangling tracer bias and gravitational nonlinearity with counts-in-cells statistics.
*Monthly Notices of the Royal Astronomical Society*2017,**473**(4), 5098-5112. - Uhlemann C, Pajer E, Pichon C, Nishimichi T, Codis S, Bernardeau F. Hunting high and low: Disentangling primordial and late-time non-Gaussianity with cosmic densities in spheres.
*Monthly Notices of the Royal Astronomical Society*2018,**474**(3), 2853-2870. - Uhlemann C, Codis S, Kim J, Pichon C, Bernardeau F, Pogosyan D, Park C, L'Huillier B. Beyond Kaiser bias: mildly non-linear two-point statistics of densities in distant spheres.
*Monthly Notices of the Royal Astronomical Society*2017,**466**(2), 2067-2084. - Kopp M, Uhlemann C, Achitouv I. Gaussian streaming with the truncated Zel'dovich approxmation.
*Physical Review D*2016,**94**, 123522. - Hahn O, Rampf C, Uhlemann C. Higher-order initial conditions for mixed baryon-CDM simulations.
*Monthly Notices of the Royal Astronomical Society*2021,**503**(1), 426–445. - Boyle A, Uhlemann C, Friedrich O, Barthelemy A, Codis S, Bernardeau F, Giocoli C, Baldi M.
**Nuw CDM cosmology from the weak lensing convergence PDF**.*Monthly Notices of the Royal Astronomical Society*2021. Submitted. - Rampf C, Uhlemann C, Hahn O. Cosmological perturbations for two cold fluids in ΛCDM.
*Monthly Notices of the Royal Astronomical Society*2020, epub ahead of print. - Uhlemann C, Friedrich O, Villaescusa-Navarro F, Banerjee A, Codis S. Fisher for complements: extracting cosmology and neutrino mass from the counts-in-cells PDF.
*Monthly Notices of the Royal Astronomical Society*2020,**495**(4), 4006-4027. - Friedrich O, Uhlemann C, Villaescusa-Navarro F, Baldauf T, Manera M, Nishimichi T. Primordial non-Gaussianity without tails – how to measure f
_{NL}with the bulk of the density PDF.*Monthly Notices of the Royal Astronomical Society*2020,**498**(1), 464-483. - Villaescusa-Navarro F, Hahn C, Massara E, Banerjee A, Delgado A, Ramanah D, Charnock Tom, Giusarma E, Li Y, Allys E, Brochard A, Uhlemann C, Chiang C, He S, Pisani A, Obuljen A, Feng Y, Castorina E, Contardo G, Kreisch C, Alsing J, Scoccimarro R, Verde L, Viel M, Ho S, Mallat S, Wandelt B, Spergel DN. The Quijote Simulations.
*The Astrophysical Journal Supplement Series*2020,**250**(1), 2.