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DTSTART;TZID=Europe/Madrid:20260423T150000
DTEND;TZID=Europe/Madrid:20260423T160000
DTSTAMP:20260718T215415
CREATED:20260321T095735Z
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UID:24651-1776956400-1776960000@www.ift.uam-csic.es
SUMMARY:Seminar by Maria Olalla Olea Romacho (King's College\, London)
DESCRIPTION:Title: ‘Traces from Primordial Magnetogenesis’ \n  \nSpeaker: Maria Olalla Olea Romacho (King’s College\, London) \n  \nVenue&Time: Red Room / 15:00 \n\nAbstract: Magnetic fields permeate the Universe across a wide range of scales\, from galaxies and clusters to the most underdense regions of the cosmic web. Gamma-ray observations of TeV blazars suggest the presence of magnetic fields in intergalactic voids\, where no efficient late-time astrophysical sources exist\, pointing toward a possible primordial origin and a direct link to early-Universe physics. Primordial magnetic fields arise naturally in scenarios such as inflation or cosmological phase transitions. In this seminar\, I present a multi-messenger perspective on their observational signatures. On the particle physics side\, I discuss collider-motivated models of electroweak phase transitions\, highlighting connections to blazar observations and stochastic gravitational-wave backgrounds. On the astrophysical side\, I show how primordial magnetic fields enhance small-scale structure formation\, leading to dense dark matter minihalos that boost indirect detection signals\, and how they impact high-redshift observables probed by the James Webb Space Telescope.
URL:https://www.ift.uam-csic.es/event/seminar-by-maria-olalla-olea-romacho-kings-college-london/
LOCATION:IFT Seminar Room/Red Room\, Instituto de Física Teórica (IFT) -C. Nicolás Cabrera\, 13-15\, Fuencarral-El Pardo\, Madrid\, 28049\,\, Spain
CATEGORIES:Scientific activities,Seminars
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