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On the energy of the protons producing the very high-energy astrophysical neutrinos
(IOP Publishing, 2021-03)
We study the distribution of the energy of the protons that can produce an astrophysical neutrino with a given observed energy, in the TeV-PeV range, both through pp or pγ interactions. Due to the increasing multiplicity ...
On the relation between the astrophysical neutrino fluxes and the cosmic ray fluxes
(IOP Publishing, 2021-08)
Some generalizations of the relation between high-energy astrophysical neutrino and cosmic ray fluxes are obtained, taking into account present results on the cosmic ray spectrum and composition as well as a more realistic ...
Pulsar timing array constraints on spin-2 ULDM
(IOP Publishing, 2020-09)
Ultra-light Dark Matter (ULDM) models are suitable candidates for the cosmological Dark Matter that may leave characteristic imprints in many observables. Among other probes, signatures of ULDM can be searched for in pulsar ...
Constraining f(R) theories with cosmography
(IOP Publishing, 2013-08)
A method to set constraints on the parameters of extended theories of gravitation is presented. It is based on the comparison of two series expansions of any observable that depends on H(z). The first expansion is of the ...
MeV-GeV γ-ray telescopes probing axino LSP/gravitino NLSP as dark matter in the μνSSM
(IOP Publishing, 2020-01)
Axino and gravitino are promising candidates to solve the dark matter (DM) problem in the framework of supersymmetry. In this work, we assume that the axino is the lightest supersymmetric particle (LSP), and therefore ...
Introduction to Black Hole Astrophysics
(Springer-Verlag, 2013)
This book is based on the lecture notes of the course on black hole astrophysicsgiven at the University of La Plata, Argentina, by one of us (GER). The materialaims at advanced undergraduate and graduate students with ...
Neutrino production in Population III microquasars
(Elsevier Science, 2021-03)
Microquasars (MQs) are binary systems composed by a star feeding mass to a compact object through an accretion disk. The compact object, usually a black hole, launches oppositely directed jets which are typically observed ...
Hybrid stars with sequential phase transitions: the emergence of the g2 mode
(IOP Publishing, 2021-02)
Neutron stars are the densest objects in the Universe, with M=1.4 M_Sun and R=12 km, and the equation of state associated to their internal composition is still unknown. The extreme conditions to which matter is subjected ...
On the occurrence and detectability of Bose-Einstein condensation in helium white dwarfs
(IOP Publishing, 2011-02-28)
It has been recently proposed that helium white dwarfs may provide promising conditions for the occurrence of the Bose-Einstein condensation. The argument supporting this expectation is that in some conditions attained in ...
Aerosol Characterization at the Pierre Auger Obsrevatory
(Centro Brasileiro de Pesquisas Fisicas, 2013)
The Pierre Auger Observatory is a hybrid facility composed of surface and fluorescence detectors (denoted as SD and FD, respectively), where the FD system sets the energy scale in cosmic ray shower reconstruction. Atmospheric ...