Conveners
Tuesday
- Kerstin Kunze (University of Salamanca)
Tuesday
- Franco Vazza (Istituto Nazionale di Astrofisica (INAF))
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Chiara Righi (Istituto Nazionale di Astrofisica (INAF))24/01/2023, 09:00
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Andrii Neronov24/01/2023, 09:30
I will review the status of constraints on cosmological magnetic fields from observations in different astronomical messengers and perspectives for tightening of the constraints with next-generation gamma-ray, radio or gravitational wave instruments (or, ultimately, measurement of the field parameters for magnetic fields from cosmological phase transitions or Inflation).
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Rafael Alves Batista (Radboud University)24/01/2023, 10:00
The origin of magnetic fields in the Universe is an open problem in cosmology. One of the most promising ways to probe intergalactic magnetic fields (IGMFs) is using gamma rays produced in electromagnetic cascades initiated by high-energy gamma rays in the intergalactic space. Because the charged component of the cascade is sensitive to intervening magnetic fields, it is possible to probe...
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Pranjal Trivedi (Hamburg Observatory, University of Hamburg)24/01/2023, 10:30
A new kind of density perturbations can be sourced by primordial magnetic fields (PMF) via their Lorentz force in the early Universe, particularly around the epoch of recombination (z~1100). PMF-induced density perturbations are expected to be quite distinct from standard adiabatic perturbations. We present 3D MHD simulations to follow the growth and characteristics of these density...
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Andrey Saveliev24/01/2023, 11:10
The recent observations of high-energy neutrinos from the blazar TXS 0506+056 in association with a corresponding electromagnetic component in a broad range of wavelengths may be used to analyze the intrinsic properties of this object and the traversed medium. Here we show that intergalactic magnetic fields (IGMFs) can affect the intrinsic spectral properties of this object reconstructed from...
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Gabriella Piccinelli Bocchi (Centro Tecnológico, FES Aragón, Universidad Nacional Autónoma de México)24/01/2023, 11:30
I will present a review of the effects that a primordial magnetic field present during the inflationary epoch can have on a warm inflation scenario, both on the effective potential and on the inflaton decay process.
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Klaus Dolag24/01/2023, 14:00
Cosmological structures form in a hierarchical way. Transport of potential energy from the large scale to small scale motions ("turbulence") as well
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as injecting large amount of energy from small scales to larger scales by astrophysical progresses ("star-formation", "AGN") leads to a very complex
and violent state of the diffuse, baryonic material within large scale cosmological structures.... -
Enrico Garaldi (Max-Planck-Institut fuer Astrophysik)24/01/2023, 14:30
The origin of the ubiquitous cosmic magnetic fields remains one of the big open questions in astrophysics, with many different seeding mechanisms being proposed over the years. Recently, it has been shown that magnetic fields can be created in the ionizing photon shadow behind overdense regions around the first galaxies. I will present the first ever cosmological simulations of such seeding...
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Tina Kahniashvili (Carnegie Mellon and Ilia State)24/01/2023, 15:00
The abstract is splitted into two paragraphs. The first paragraph is a
general description, while the second paragraph gives the description
of the primordial magnetism aspects. If you think that the abstract is
too long, please use just the first paragraph. It is completely up to
you.Abstract:
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The detection of the relic magnetic fields through cosmological or
astrophysical... -
Kyrylo Bondarenko (SISSA)24/01/2023, 15:30
Primordial magnetic field, when it confidently discovered, would play as important role in cosmology as CMB or Large Scale Structure. However, its observation can be affected by the presence of the large-scale magnetic field of galactic origin, magnetic bubbles. In the series of works, we study the effects of galaxy formation physics on the magnetization of the intergalactic medium (IGM) using...
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Shane O'Sullivan (Dublin City University)24/01/2023, 16:10
Radio-loud AGN can be observed throughout the majority of the history of the Universe and are thus excellent beacons for measuring the properties of the cosmic web and their evolution. In this talk, I will highlight recent results from the Low Frequency Array (LOFAR) telescope that use the effect of Faraday rotation to measure the evolution of the magnetic field strength in the filaments and...
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Salome Mtchedlidze (Ilia State University)24/01/2023, 16:30
Primordial Magnetic Fields (PMFs), being good candidates for explaining the large-scale magnetisation of our Universe, evolve in a distinguishable fashion across different cosmological epochs. Their post-recombination structure and coherence scale depend on (i) details of the particular magnetogenesis model and (ii) evolutionary trends in the pre-recombination Universe. Inflation and...
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Ludwig Böss (University Observatory Munich)24/01/2023, 17:00
We present a part of the Simulating the LOcal Web (SLOW) project consisting of a cosmological non-radiative MHD simulation of a 500 Mpc h^-1 box including the spectral Cosmic Ray (CR) model presented in Böss et. al. (2022). I will briefly introduce the solver and show its application to predicting synchrotron emission from cosmic web filaments and accretion shocks around clusters, as well...
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Franco Vazza (Istituto Nazionale di Astrofisica (INAF))24/01/2023, 17:20