NGC 5128, J.L. Sersic, Atlas de Galaxias Australes, 1968
NGC 253, J.L. Sersic, Atlas de Galaxias Australes, 1968
1st Extragalactic Astronomy Meeting, 1975, J.L. Sersic, T.G. Catellanos, P. Kaufman
NGC 2442, J.L. Sersic, Atlas de Galaxias Australes, 1968
2nd Extragalactic Astronomy Meeting, 1987
NGC 2997, J.L. Sersic, Atlas de Galaxias Australes, 1968
3rd Extragalactic Astronomy Meeting, 1996
NGC 55, J.L. Sersic, Atlas de Galaxias Australes, 1968

Casanueva, Catalina

Chile – Pontificia Universidad Católica de Chile

Primordial black holes as candidates for dark matter and posible feedback source at very high redshift

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We aim to study the formation of the first galaxies and the regulation of star formation at early times through analysis of the role of primordial black holes (PBHs) as sources of energy injection and their relative relevance to the other feedback mechanisms present at high redshift (POP III, SN and HMXBs). Specifically, we seek to: (i) incorporate these feedback mechanisms into numerical simulations to analyze their joint evolution, (ii) develop and test a model for early feedback by PBHs, (iv) evaluate the relative contribution of the different feedback mechanisms as a function of time, and (v) derive predictions and envisage observational evidence that can help us constrain theoretical models. In particular, studying the impact of feedback by PBHs, we aspired to set constraints to the fraction of dark matter that could exist as PBHs as a function of their masses.

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