Search Results - "del Popolo, Antonino"

Small Scale Problems of the ΛCDM Model: A Short Review by Del Popolo, Antonino, Le Delliou, Morgan

“…The ΛCDM model, or concordance cosmology, as it is often called, is a paradigm at its maturity. It is clearly able to describe the universe at large scale,…”
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Neutron star mass in dark matter clumps by Deliyergiyev, Maksym, Del Popolo, Antonino, Le Delliou, Morgan

“…ABSTRACT This paper investigates a hypothesis proposed in previous research relating neutron star (NS) mass and its dark matter (DM) accumulation. As DM…”
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Quantifying Departures from Equilibrium with the Spherical Jeans Equation by Evslin, Jarah, Popolo, Antonino Del

“…Proper motions of collisionless, pointlike objects in a spherically symmetric system-for example, stars in a galaxy-can be used to test whether that system is…”
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A Mass Dependent Density Profile from Dwarfs to Clusters by Del Popolo, Antonino, Le Delliou, Morgan

“…In this paper, we extend the work of Freundlich et al. 2020 who showed how to obtain a Dekel–Zhao density profile with mass dependent shape parameters in the…”
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Non-Thermal Emission from Radio-Loud AGN Jets: Radio vs. X-rays by Fedorova, Elena, Hnatyk, Bohdan, Del Popolo, Antonino, Vasylenko, Anatoliy, Voitsekhovskyi, Vadym

“…We consider the sample of 55 blazars and Seyferts cross-correlated from the Planck all-sky survey based on the Early Release Compact Source Catalog (ERCSC) and…”
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The radial acceleration relation in galaxy clusters by Chan, Man Ho, Del Popolo, Antonino

“…ABSTRACT Recently, the discovery of the radial acceleration relation (RAR) in galaxies has been regarded as an indirect support of alternative theories of…”
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A precise mass function in the excursion set approach by Del Popolo, Antonino

“…In the present paper, using previous results from Del Popolo papers, we show how the mass function evolution can be obtained in the framework of a spherical…”
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The effect of magnetic field on the inner Galactic rotation curve by Chan, Man Ho, Del Popolo, Antonino

“…ABSTRACT In the past few decades, some studies pointed out that magnetic field might affect the rotation curves in galaxies. However, the impact is relatively…”
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On the Influence of Angular Momentum and Dynamical Friction on Structure Formation: III. The Effect of Dark Energy by Del Popolo, Antonino

“…We study the effect of modifying the equation of state parameter ( ) of dark energy on the results of the previous study [1] (hereafter Paper II), in which…”
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Building stellar bulges and halo cores from massive clumps observed in the DYNAMO-HST sample by Hashim, Mahmoud, El-Zant, Amr A, Del Popolo, Antonino

“…ABSTRACT We present N-body simulations of the process of bulge formation in disc galaxies due to inward migration of massive stellar clumps. The process is…”
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Alternative Gravities and Surface Density of Haloes by Del Popolo, Antonino

“…In this paper, we extend a paper of Milgrom [36] dealing with the existence of a quasi-universal surface density for object of all mass and structure, if they…”
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Absence of a fundamental acceleration scale in galaxies by Rodrigues, Davi C., Marra, Valerio, del Popolo, Antonino, Davari, Zahra

“…Dark matter is currently one of the main mysteries of the Universe. There is much strong indirect evidence that supports its existence, but there is yet no…”
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Improved Lemaitre–Tolman Model and the Mass and Turn-around Radius in Group of Galaxies. II. The Role of Dark Energy by Del Popolo, Antonino, Chan, Man Ho

“…In this paper, we extend our previous study on the Lemaitre–Tolman (LT) model showing how the prediction of the model changes when the equation of state (EoS)…”
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Prompt Cusp Formation and Angular Momentum by Del Popolo, Antonino, Fakhry, Saeed

“…In this study, we expand on White’s model proposed in [1], which explores the post-collapse evolution of density peaks while incorporating the influence of…”
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On the time dependency of a0 by Popolo, Antonino Del, Chan, Man Ho

“…In this paper, we test one of the predictions of the Scale Invariant Vacuum (SIV) theory on MOND. According to that theory, MOND’s acceleration a0 is not a…”
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Review of Solutions to the Cusp-Core Problem of the ΛCDM Model by Del Popolo, Antonino, Le Delliou, Morgan

“…This review aims at proposing to the field an overview of the Cusp-core problem, including a discussion of its advocated solutions, assessing how each can…”
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Neutron Stars and Dark Matter by Del Popolo, Antonino, Le Delliou, Morgan, Deliyergiyev, Maksym

“…Neutron stars change their structure with accumulation of dark matter. We study how their mass is influenced from the environment. Close to the sun, the dark…”
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Surface Density of Disk Galaxies in MOND by Del Popolo, Antonino, Le Delliou, Morgan

“…In this paper, we extend a paper by Milgrom (2009, MNRAS 398, 1023) dealing with the existence of a quasi-universal surface density for object of all mass and…”
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An Anisotropic Model for the Universe by Delliou, Morgan Le, Deliyergiyev, Maksym, del Popolo, Antonino

“…Motivated by the back-reaction debate, and some unexplained characteristics of the CMB, we investigate the possibility of some anisotropy in the universe…”
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Splashback Radius in a Spherical Collapse Model by Del Popolo, Antonino, Le Delliou, Morgan

“…It was shown several years ago that dark matter halo outskirts are characterized by very steep density profiles in a very small radial range. This feature has…”
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