Physical Cosmology
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Group Events

Physical Cosmology seminar: Fridays, 11:00-12:00, [formerly @ University Observatory, Villa (Laplace-Strasse)].

The group seminar for the winter term 2021/2022 will be held remotely. If you are part of the Physical Cosmology (LMU) team, you should have received the zoom details to attend. If something went wrong or you wish to attend our seminar, please drop an email to steffen.hagstotz(at)lmu.de.

Winter term 2021/2022 
Friday   Speaker   Title/Article Notes
24.09. Peter Taylor "Separation of Scales in Projection" @17:00 CEST, Special seminar
01.10. Andrija Kostic

"Machine-driven searches for cosmological physics"  https://arxiv.org/pdf/2107.00657.pdf 

Special seminar
8.10.

Thomas

 "Finding and characterising cosmic voids with deep learning methods" Master Thesis Update
15.10. Martin Kerscher  "The geometrical meaning of statistical isotropy of smooth random fields
in two dimensions" https://arxiv.org/abs/2109.05726 
paper discussion
22.10.  (Enrico's group) 1st installment of the Munich-Cambridge JC

MUC (USM) - CAM JC @11:00 am CEST

(Cambridge visits Munich)

29.10. Sara Maleubre

"Accuracy of Power Spectrum from N-body simulations using Scale-Free cosmologies"

Special seminar
5.11. Gerrit Farren "Ultra-light Axions and the kSZ effect"

Measurements of secondary cosmic microwave background (CMB) anisotropies, such as the Sunyaev-Zel'dovich (SZ) effect, will enable new tests of neutrino and dark sector properties. The kinetic SZ (kSZ) effect is produced by cosmological flows, probing structure growth. Ultra-light axions (ULAs) are a well-motivated dark-matter candidate with profound impact on cosmic structure formation. I will present results from our recent work (arxiv.org/abs/2109.13268) determining the impact of ULA dark matter (with mass 1e-27 to 1e-23 eV) on kSZ observables, applying new analytic expressions for pairwise cluster velocities and Ostriker-Vishniac signatures in structure-suppressing models. For the future CMB-S4 and ongoing DESI galaxy surveys, kSZ derived pairwise velocities (along with primary anisotropies) will probe ULA fractions as low as ~5% if the axion mass is around 1e-27 eV (at 95% C.L.), with sensitivity extending up to 1e-25 eV. Direct detection of the power spectrum of kSZ induced fluctuations could be an even more powerful probe with sensitivity for masses up to 1e-22 eV under ideal modelling assumptions.

Special seminar
12.11. Jochen Weller "Fuzzy Dark Matter and the Dark Energy Survey Year 1 Data" (https://arxiv.org/abs/2111.01199)

16.11.

(Tuesday)

Barbara Sartoris "Testing cosmology with galaxy cluster mass profiles"

CAM - MUC @11:00 am CEST

(Munich visits Cambridge)

19.11. - - cancelled (due to ongoing MIAPP workshop)
26.11. - - cancelled (due to ongoing MIAPP workshop)
3.12. Nico Schuster

"Baryonic Voids and their profiles in Magneticum"

10.12. Nico Hamaus  "Priors on red galaxy stochasticity from hybrid effective field theory" (https://arxiv.org/abs/2112.00012)

15.12.

(Wednesday)

Agne Semenaite "Cosmological implications of the full shape of anisotropic clustering measurements in BOSS and eBOSS"

(https://arxiv.org/abs/2111.03156)

MUC (MPA) - CAMJC @11:30 am CEST

(Cambridge visits Munich)

17.12.

- end of year meeting and discussion

 

 

CHRISTMAS BREAK

 

14.01.2022  Steffen "Cosmology with one galaxy?" (https://arxiv.org/abs/2201.02202)

21.01.2022

Tobias

"Gravitational Waves in Cosmology"

28.01.2022

 

Angelo 

TBA 

11.02.2022 Alex Barreira

TBA

Natalie Assmann

TBA

In case you'd like to change your assigned date please email steffen.hagstotz(at)lmu.de

 

2. Bi-Weekly Seminar: Mondays, 10:00-11:00, University Observatory, Seminar Room.

Given the current situation, our seminars are momentarily suspended (last update: January 2022).