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Fiona McCarthy02/06/2025, 09:30
The cosmic microwave background (CMB) provides us with an extremely well-calibrated and well-understood photon source: it is incredibly uniform (to within 0.001%), and follows an almost perfect black-body spectrum. As it shines through the entire evolving Universe, it passes through a range of diverse environments and interacts with various structures, picking up new signals. CMB observations...
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Dr Yu-Dai Tsai (UC Irvine)02/06/2025, 10:00
Dark matter, neutrinos, and gravity interact feebly with the rest of the Standard Model particles, yet govern how the Universe evolves and operates. Together, they are the elusive parts of the Universe that have profound implications for particle physics, astrophysics, and cosmology. In this talk, I will use the planetary-defense mission, OSIRIS-REx, and the precision tracking data of the...
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Duarte Miguel da Silva Feiteira (University of Helsinki)02/06/2025, 11:00
Gravitational particle production provides an ever-present background in non-thermal dark matter studies. I discuss the correspondence between the Starobinsky and Bogolyubov approaches to the problem of inflationary particle production, and derive strong constraints on frameworks with scalar dark relics.
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Teppei Katori02/06/2025, 11:30
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Clelia Altomonte (King's College London)02/06/2025, 13:30
Upon their evaporation via Hawking radiation, primordial black holes (PBHs) may deposit energy in the ambient plasma on scales smaller than the typical distance between two black holes, leading to the formation of hot spots around them. My talk will be based on arXiv:2501.05531, where we investigate how the corresponding rise of the local temperature during the evaporation may act as a shield...
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John Carlton02/06/2025, 14:00
Atom interferometers offer exceptional sensitivity to ultra-light dark matter (ULDM) through their precise measurement of phenomena acting on atoms. Previous work has established their capability to detect scalar and vector ULDM, but their potential for detecting spin-2 ULDM has until recently remained unexplored. In this talk I will introduce the sensitivity of atom interferometers to spin-2...
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Yunji Ha (IPPP, Durham)02/06/2025, 14:30
In this talk, I will show a novel minimal non-abelian gauge group to embed the G_{SM}/Z1 quotient with fractionally charged beyond the standard model matter fields and show how we can define a new quantum number n_6 that is written in terms of the generators of G_{SM}. We also comment on interesting aspects of this new number, like how the degree of compositeness can shift n_6. This new...
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Jeffrey Grube (King's College London)02/06/2025, 15:30
The Cherenkov Telescope Array Observatory (CTAO) is the next-generation observatory for ground- based gamma-ray astrophysics. CTAO will achieve unprecedented sensitivity and angular resolution at energies from 20 GeV to 300 TeV across both the northern and southern hemisphere skies. Con- struction and early operations are underway at the two sites of La Palma in the Canary islands, and in the...
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02/06/2025, 16:10
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Fiona McCarthy
The cosmic microwave background (CMB) provides us with an extremely well-calibrated and well-understood photon source: it is incredibly uniform (to within 0.001%), and follows an almost perfect black-body spectrum. As it shines through the entire evolving Universe, it passes through a range of diverse environments and interacts with various structures, picking up new signals. CMB observations...
Go to contribution page -
Duarte Miguel da Silva Feiteira (University of Helsinki)
Gravitational particle production provides an ever-present background in non-thermal dark matter studies. I discuss the correspondence between the Starobinsky and Bogolyubov approaches to the problem of inflationary particle production, and derive strong constraints on frameworks with scalar dark relics.
(Based on D. Feiteira, O. Lebedev, arXiv:2503.14652)
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John Carlton
Atom interferometers offer exceptional sensitivity to ultra-light dark matter (ULDM) through their precise measurement of phenomena acting on atoms. Previous work has established their capability to detect scalar and vector ULDM, but their potential for detecting spin-2 ULDM has until recently remained unexplored. In this talk I will introduce the sensitivity of atom interferometers to spin-2...
Go to contribution page -
Clelia Altomonte (King's College London)
Upon their evaporation via Hawking radiation, primordial black holes (PBHs) may deposit energy in the ambient plasma on scales smaller than the typical distance between two black holes, leading to the formation of hot spots around them. My talk will be based on arXiv:2501.05531, where we investigate how the corresponding rise of the local temperature during the evaporation may act as a shield...
Go to contribution page
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