Zobrazeno 1 - 10
of 37
pro vyhledávání: '"Argüelles, Carlos R."'
Autor:
Pelle, Joaquin, Argüelles, Carlos R., Vieyro, Florencia L., Crespi, Valentina, Millauro, Carolina, Mestre, Martín F., Reula, Oscar, Carrasco, Federico
Current images of the supermassive black hole (SMBH) candidates at the center of our Galaxy and M87 have opened an unprecedented era for studying strong gravity and the nature of relativistic sources. Very-long-baseline interferometry (VLBI) data sho
Externí odkaz:
http://arxiv.org/abs/2409.11229
Autor:
Mestre, Martín F., Argüelles, Carlos R., Carpintero, Daniel D., Crespi, Valentina, Krut, Andreas
Publikováno v:
A&A 689, A194 (2024)
Traditional studies on stellar streams typically involve phenomenological $\Lambda$CDM halos or ad hoc dark matter (DM) profiles with different degrees of triaxiality, which preclude to gain insights into the nature and mass of the DM particles. Rece
Externí odkaz:
http://arxiv.org/abs/2404.19102
Galaxy rotation curve (RC) fitting is an important technique which allows the placement of constraints on different kinds of dark matter (DM) halo models. In the case of non-phenomenological DM profiles with no analytic expressions, the art of findin
Externí odkaz:
http://arxiv.org/abs/2308.08420
Autor:
Yunis, Rafael Ignacio, Argüelles, Carlos R., Nacir, Diana López, Scóccola, Claudia, Mavromatos, Nikolaos, Krut, Andreas
In this work we present a summary of recent studies on the effects of elastic self interactions in the evolution of Warm Dark Matter models (WDM), focusing on structure formation and the evolution of cosmological perturbations. We pay special attenti
Externí odkaz:
http://arxiv.org/abs/2111.07642
Autor:
Argüelles, Carlos R., Becerra-Vergara, Eduar A., Krut, Andreas, Yunis, Rafael, Rueda, Jorge A., Ruffini, Remo
We study the non-linear structure formation in cosmology accounting for the quantum nature of the dark matter (DM) particles in the initial conditions at decoupling, as well as in the relaxation and stability of the DM halos. Differently from cosmolo
Externí odkaz:
http://arxiv.org/abs/2111.06199
Autor:
Yunis, Rafael, Argüelles, Carlos R., Scóccola, Claudia G., Nacir, Diana López, Giordano, Gastón
Publikováno v:
Journal of Cosmology and Astroparticle Physics, Volume 2022, February 2022
This paper presents a systematic and accurate treatment of the evolution of cosmological perturbations in self-interacting dark matter models, for particles which decoupled from the primordial plasma while relativistic. We provide a numerical impleme
Externí odkaz:
http://arxiv.org/abs/2108.02657
The formation and stability of collisionless self-gravitating systems are long standing problems, which date back to the work of D. Lynden-Bell on violent relaxation and extends to the issue of virialization of dark matter (DM) halos. An important pr
Externí odkaz:
http://arxiv.org/abs/2012.11709
Publikováno v:
JCAP09(2020)041
We provide a general framework for self-interacting warm dark matter (WDM) in cosmological perturbations, by deriving from first principles a Boltzmann hierarchy which retains certain independence from a particular interaction Lagrangian. We consider
Externí odkaz:
http://arxiv.org/abs/2002.05778
Publikováno v:
Class. Quantum Grav. (2020) 37 205002
We study the thermodynamics of a self-gravitating system of neutral fermions at finite temperature and analyze its backreaction in an asymptotically AdS space. We evaluate numerically the free entropy as a function of temperature, and perform a stabi
Externí odkaz:
http://arxiv.org/abs/1911.02554
Publikováno v:
J. High Energ. Phys. (2018) 2018: 118
We explore the gravitational backreaction of a system consisting in a very large number of elementary fermions at finite temperature, in asymptotically AdS space. We work in the hydrodynamic approximation, and solve the Tolman-Oppenheimer-Volkoff equ
Externí odkaz:
http://arxiv.org/abs/1712.05866