Author

A. Rantala

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Preprint Oct 2026

Tracing small-scale structure formation through cosmic time with strong gravitational lensing: A case for a next-generation sub-millimetre/millimetre interferometer

The nature of dark matter and the growth of supermassive black holes (SMBHs) remain major open questions in modern astrophysics. Both leave a key signature in an overlapping, largely unexplored mass range: $<10^7$ M$_{\odot}$ dark haloes and wandering black holes. These may be undetectable directly, but detectable thro...

H. Stacey, J. McKean, M. Pandey-Pommier et al. · 0 citations

Open access Oct 2026

Ballistic mixing: Stellar mergers drive internal mixing in extremely massive stars with implications for proto-globular cluster pollution

Extremely massive stars, with masses of 10^3--10^4 have been proposed as potential sources of the chemical enrichment associated with multiple populations in globular clusters. Early in the main sequence, these stars reach central temperatures of 65 to 75 MK, enabling nucleosynthesis through the CNO, NeNa, and MgAl cyc...

J. Román-Garza, C. Charbonnel, A. Rantala et al. · Astronomy & Astrophysics · 0 citations