99 citations
- Universidad Católica del NorteCL5 papers
- Catholic University of the MauleCL4 papers
- Instituto de Astronomía Teórica y ExperimentalAR4 papers
- Leibniz Institute for Astrophysics PotsdamDE4 papers
- Liverpool John Moores UniversityGB4 papers
- Max Planck Institute for AstronomyDE4 papers
- Osservatorio Astronomico di PadovaIT4 papers
- Space Telescope Science InstituteUS4 papers
- University of La SerenaCL4 papers
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- Centre National de la Recherche ScientifiqueFR3 papers
7 papers · 1 filter
An exponential equation of state of dark energy in the light of 2018 CMB Planck data
Mónica N. Castillo-Santos, A. Hernández-Almada, Miguel A. García-Aspeitia +1
The dynamics of the Universe is analyzed using an exponential function for the dark energy equation of state, known as Gong-Zhang parameterization. The phase space of the free para…
Recombination of hot ionized nebulae: The old planetary nebula around V4334 Sgr (Sakurai's star)
Martin Reichel, Stefan Kimeswenger, Peter A. M. van Hoof +5
After becoming ionized, low-density astrophysical plasmas will begin a process of slow recombination. Models for this still have significant uncertainties. The recombination cannot…
Uncertainty-Aware Blob Detection with an Application to Integrated-Light Stellar Population Recoveries
Fabian Parzer, Prashin Jethwa, Alina Boecker +3
Context. Blob detection is a common problem in astronomy. One example is in stellar population modelling, where the distribution of stellar ages and metallicities in a galaxy is in…
Extended primordial black hole mass functions with a spike
Juan Magaña, Marco San Martín, Joaquín Sureda +3
We introduce a modification of the Press-Schechter formalism aimed to derive general mass functions for primordial black holes (PBHs). In this case, we start from primordial power…
Dark matter from primordial black holes would hold charge
Ignacio J. Araya, Nelson D. Padilla, Marcelo E. Rubio +3
We explore the possibility that primordial black holes (PBHs) contain electric charge down to the present day. We find that PBHs should hold a non-zero net charge at their formatio…
Cosmology under the fractional calculus approach
Miguel A. García-Aspeitia, Guillermo Fernandez-Anaya, A. Hernández-Almada +2
Fractional cosmology modifies the standard derivative to Caputo's fractional derivative of order , generating changes in General Relativity. Friedmann equations are modified, an…