About

CosmoCoffee is a weekly seminar at the University of Helsinki where researchers in cosmology and related fields gather to discuss the field’s recent developments and published articles over a cup of coffee. We gather on Thursdays 14:15-15:00.

Schedule

Schedule:

      • 02.06.2022 Syksy Räsänen “First Sagittarius A* Event Horizon Telescope Results. I. The Shadow of the Supermassive Black Hole in the Center of the Milky Way” 10.3847/2041-8213/ac6674 and “First Sagittarius A* Event Horizon Telescope Results. VI. Testing the Black Hole Metric” 10.3847/2041-8213/ac6756.
      • 12.05.2022 Group Event (Speakers: Oscar Henriksson, Philipp Schicho, Jong-Hyun Yoon, Deanna Hooper, Jaakko Annala, Jun’ya Kume, Kalle Ala-Mattinen, Lorenzo Giombi, Sami Raatikainen).
      • 05.05.2022 ArXive papers session.
      • 28.04.2022 Oleg Lebedev “On gravitational preheating” 2203.15808.
      • 21.04.2022 Overlap with Kimmo Tuominen talk.
      • 14.04.2022 Easter break.
      • 07.04.2022 Matti Heikinheimo “Self-Interacting Dark Matter from Gravitational Scattering” 2203.11962.
      • 31.03.2022 Sami Raatikainen “The cosmic coincidences of primordial-black-hole dark matter” 2109.09875.
      • 24.03.2022 Deanna Hooper “Discordances in cosmology and the violation of slow-roll inflationary dynamics” 2202.14028.
      • 17.03.2022 ArXive papers session.
      • 10.03.2022 Kalle Ala-Mattinen  “An absolute ν mass measurement with the DUNE experiment” 2203.00024 (and some extracts of https://www.nature.com/articles/s41567-021-01463-1).
      • 24.02.2022 Jong-Hyun Yoon “Dark matter production and reheating via direct inflaton couplings: collective effects” 2107.06292.
      • 17.02.2022 Lorenzo Giombi “Escape from supercooling with or without bubbles: gravitational wave signatures” 2106.09706.
      • 10.02.2022 Syksy Räsänen “A Stable Sexaquark: Overview and Discovery Strategies” 2201.01334
      • 03.02.2022 Philipp Schicho  “Bubble Nucleation to All Orders” 2201.07331
      • 20.01.2022 Deanna Hooper “A Comprehensive Measurement of the Local Value of the Hubble Constant with 1 km/s/Mpc Uncertainty from the Hubble Space Telescope and the SH0ES Team” 2112.04510
      • 13.01.2022 Daniel Cutting “Limits on Primordial Black Holes from M87” 2201.03591
      • 16.12.2021 Matti Heikinheimo  “No need for dark matter: resolved kinematics of the ultra-diffuse galaxy AGC 114905” 2112.00017 
      • 9.12.2021 Jaakko Annala “Inflation with R(αβ) terms in the Palatini formulation”  2106.12422
      • 2.12.2021 Oleg Lebedev “The Higgs Portal to Cosmology”  2104.03342
      • 25.11.2021 Deanna Hopper “Hints of dark matter-neutrino interactions in Lyman-α data2110.04024
      • 18.11.2021 Timofey Solomko “Inflaton freeze-out” 2110.05488
      • 11.11.2021 Kalle Ala-Mattinen “ ”
      • 4.11.2021 Anna Kormu “Irreducible cosmic production of relic vortons ” 2010.04620v2
      • 28.10.2021  –
      • 21.10.2021 Lorenzo Giombi “ Primordial black hole formation for an anistropic perfect fluid: initial conditions and estimation of the threshold” 2110.05982
      • 14.10.2021 Mark Hindmarsh
      • 7.10.2021   Jong-Hyun Yoon  “Challenges for inflation dark matter2105.05860 and “Dark matter production and reheating via direct inflation couplings: collettive effects” 2107.06292
      • 30.9.2021  Sami Raatikainen Primordial black hole formation with full numerical relativity 2109.04896
      • 23.9.2021  Daniel Cutting Shan–Chen interacting vacuum cosmology2109.08676 

 

 

Former discussions:

 

Former presentations:

2019:

      • 25.4.2019 Vera-Maria Enckell: Higgs-R^2 inflation — full slow roll study at tree level.
      • 11.4.2019 Valtteri Lindholm: Clustering of CODEX clusters.
      • 21.3.2019 Sami Raatikainen:
      • 7.3.2019 Jong-Hyun Yoon:
      • 21.2.2019 Eemeli Tomberg: Preheating in Palatini formulation of Higgs inflation.

2018:

      • 17.5.2018 J-M Ojanperä: Ashtekar formalism and non-minimal coupling to a scalar field (eventually Higgs).
      • 3.5.2018 Vera-Maria Enckell: Higgs-R^2 inflation.
      • 26.4.2018 Valtteri Lindholm: Tweaks to galaxy 2-point correlation function estimators.
      • 15.3.2018 Pyry Wahlman: Are Palatini formalism and metric formalism equivalent in Lovelock gravity?
      • 15.2.2018 Eemeli Tomberg: Higgs inflation at the hilltop.