27-31 August 2018
LVH, Luisenstraße 58, 10117 Berlin
Europe/Berlin timezone
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Cosmology

Place

Location: LVH, Luisenstraße 58, 10117 Berlin
Address: LANGENBECK VIRCHOW HAUS Luisenstraße 58, 10117 Berlin
Date: from 28 Aug 14:00 to 30 Aug 17:15

Description

Chair 1-2: Jakob Nordin

Conveners

  • 28 Aug 14:00 - 3:45 PM 1
    • Mr. Nordin, Jakob (HU Berlin)
    • Dr. Zavala Franco, Jesús (University of Iceland)
    • Prof. Jasche, Jens (Stockholm University)
  • 30 Aug 16:15 - 5:15 PM 2
    • Mr. Nordin, Jakob (HU Berlin)
    • Dr. Zavala Franco, Jesús (University of Iceland)
    • Prof. Jasche, Jens (Stockholm University)

Timetable | Contribution List

Displaying 10 contributions out of 10
Type: Talk Session: Cosmology
Track: Cosmology
Primordial Magnetic Fields (PMFs), being present before the epoch of cosmic recombination, induce small-scale baryonic density fluctuations. These inhomogeneities lead to an inhomogeneous recombination process which alters the peaks and heights of the large-scale anisotropies of the Cosmic Microwave Background (CMB) radiation. Utilizing numerical compressible MHD calculations based on kinetic cons ... More
Presented by Dr. Andrey SAVELIEV on 28/8/2018 at 12:45
Type: Talk Session: Cosmology
Track: Cosmology
The Zwicky Transient Facility (ZTF) has started operating earlier this year and is continuously discovering transients throughout the norther sky. Over the course of its three-year survey we expect to find thousands of supernovae, including 2000 type Ia supernovae at low redshifts (z < 0.1) with high-quality lightcurves needed for determining cosmological distances. Such a sample will be essential ... More
Presented by Mr. Ulrich FEINDT on 30/8/2018 at 14:30
Type: Talk Session: Cosmology
Track: Cosmology
Measurements of the CMB and future 21-cm results can set significant constraints on dark matter annihilation or decay. To obtain such limits, a good understanding of how dark matter energy injection affects the ionization and thermal history of the universe is crucial. In this talk, I will present a new and open-source code package called `DarkHistory`, which will compute these histories efficient ... More
Presented by Mr. Hongwan LIU on 28/8/2018 at 13:00
Type: Talk Session: Cosmology
Track: Cosmology
I will present the measurement of an absorption feature in the sky-averaged radio spectrum centered at 78 MHz with the EDGES experiment. The measured feature is broadly consistent with the absorption of photons from the microwave background by neutral hydrogen gas in the intergalactic medium (IGM) due to significant star formation about 180 million years after the Big Bang. Despite this consistenc ... More
Presented by Dr. Raul MONSALVE on 30/8/2018 at 14:15
Type: Talk Session: Cosmology
Track: Cosmology
Strong gravitational lenses with measured time delays between the multiple images can be used to determine the Hubble constant that sets the expansion rate of the Universe. Measuring the Hubble constant is crucial for inferring properties of dark energy, spatial curvature of the Universe and neutrino physics. I will describe techniques for measuring the Hubble constant from lensing with a realist ... More
Presented by Prof. Sherry SUYU on 28/8/2018 at 12:00
Type: Talk Session: Cosmology
Track: Cosmology
In this talk, we discuss the relation between the strength of the self-interaction of dark matter (SIDM) particles and the predicted properties of the inner density distributions of dark matter (DM) halos. We present the results of N-body simulations for 28 halos performed for the same initial conditions for cold DM and for SIDM with different cross-sections. We provide a simple phenomenological ... More
Presented by Ms. Anastasia SOKOLENKO on 28/8/2018 at 12:30
Type: Talk Session: Cosmology
Track: Cosmology
Gravitational lensing represents a unique tool to study the dark Universe. Small distortions in the images of galaxies caused by the gravitational lensing effect of the matter distribution in the Universe can be detected over the whole sky. Measuring these coherent distortions makes dark matter structures "visible", allows us to study their growth over cosmic time, and yields cosmological ins ... More
Presented by Hendrik HILDEBRANDT on 28/8/2018 at 12:15
Type: Talk Session: Cosmology
Track: Cosmology
The robustness of inflation to inhomogeneous initial conditions for matter fields and the spacetime metric is under investigation. If inflationary expansion fails to begin under sufficiently inhomogeneous initial conditions, such that inflation requires fine-tuning of its initial state to occur, then its naturalness is challenged. I will present results for the range of initial conditions which gi ... More
Presented by Patrick FITZPATRICK on 30/8/2018 at 15:00
Type: Talk Session: Cosmology
Track: Cosmology
Exclusion of several classes of models due to LHC and astroparticle data has revived interest in grand unification. Typical unified theories predict topological defects. We study a particular SUSY SO(10) model which can produce transitory domain walls near grand unification scale, comparable to the scale of onset of low field inflation. While topologically not stable, the D-parity domain walls are ... More
Presented by Prof. Urjit YAJNIK on 28/8/2018 at 13:15
Type: Talk Session: Cosmology
Track: Cosmology
In this talk, I would like to review how the CMB (in particular its temperature and polarization anisotropies) can be used to look for ultra light axion-like particles (ULAs). Such ULAs are numerous in the axiverse scenario and can play many role in cosmology, from Dark Matter to Dark Energy. Moreover, they have been invoked to solve several recent cosmological tensions. In particular, ULAs can ... More
Presented by Dr. Vivian POULIN on 30/8/2018 at 14:45
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