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pro vyhledávání: '"Profumo A"'
We study the impact on the trajectory of high-energy cosmic-ray protons of scattering off the cosmic dark matter. We compute the scattering angle as a function of the cosmic-ray energy, of the dark matter mass, and of the interaction strength for a f
Externí odkaz:
http://arxiv.org/abs/2405.02755
Autor:
Munbodh, Pankaj, Profumo, Stefano
Publikováno v:
15 August 2024 issue of Physical Review D 110 (2024) 4, 043014
If the cosmological dark matter (DM) couples to Standard Model (SM) fields, it can decay promptly to SM states in a highly energetic hard process, which subsequently showers and hadronizes to give stable particles including $e^\pm$, $\gamma$, $p^{\pm
Externí odkaz:
http://arxiv.org/abs/2405.00798
Autor:
Profumo, Stefano
The fate of ultralight black holes depends on whether or not evaporation stops at or around the Planck scale. If evaporation stops, the general expectation is that a population of Planck-scale will be left over, possibly including a significant fract
Externí odkaz:
http://arxiv.org/abs/2405.00546
Autor:
Marichal, Henry, Passarella, Diego, Lucas, Christine, Profumo, Ludmila, Casaravilla, Verónica, Galli, María Noel Rocha, Ambite, Serrana, Randall, Gregory
The automatic detection of tree-ring boundaries and other anatomical features using image analysis has progressed substantially over the past decade with advances in machine learning and imagery technology, as well as increasing demands from the dend
Externí odkaz:
http://arxiv.org/abs/2404.10856
The tidal disruption of old, compact stellar structures provides strong constraints on macroscopic dark matter candidates such as primordial black holes. In view of recent, new observational data on the Eridanus II dwarf galaxy and on its central ste
Externí odkaz:
http://arxiv.org/abs/2403.19015
Autor:
Korwar, Mrunal, Profumo, Stefano
Black holes long-lived enough to be the dark matter have temperatures below the MeV. Since Hawking evaporation is a quasi-thermal process, no GeV emission is predicted to be produced by black holes if they are part, or all, of the cosmological dark m
Externí odkaz:
http://arxiv.org/abs/2403.18656
Autor:
Arcadi, Giorgio, Cabo-Almeida, David, Dutra, Maíra, Ghosh, Pradipta, Lindner, Manfred, Mambrini, Yann, Neto, Jacinto P., Pierre, Mathias, Profumo, Stefano, Queiroz, Farinaldo S.
Weakly Interacting Massive Particles (WIMPs) continue to be considered some of the best-motivated Dark Matter (DM) candidates. No conclusive signal, despite an extensive search program that combines, often in a complementary way, direct, indirect, an
Externí odkaz:
http://arxiv.org/abs/2403.15860
The spectra of gravitational waves from black hole evaporation generically peak at frequencies of order the Hawking temperature, making this signal ultra-high frequency for primordial black holes evaporating in the early universe. This motivates us t
Externí odkaz:
http://arxiv.org/abs/2312.08508
Publikováno v:
Phys. Rev. D 109, 023013 (Jan. 2024)
Gravitational microlensing is one of the strongest observational techniques to observe non-luminous astrophysical bodies. Existing microlensing observations provide tantalizing evidence of a population of low-mass objects whose origin is unknown. The
Externí odkaz:
http://arxiv.org/abs/2311.00751
Publikováno v:
JCAP07(2024)049
We study the possibility that dark matter re-enters kinetic equilibrium with a radiation bath after kinetic decoupling, a scenario we dub kinetic recoupling. This naturally occurs, for instance, with certain types of resonantly-enhanced interactions,
Externí odkaz:
http://arxiv.org/abs/2310.20513