activity
20042025
most citedPhysical properties of the solar magnetic photosphere under the MISMA hypothesis III: sunspot at disk center

39 citations · 82 across the 8 of their papers we have counts for

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Showing astro-ph.GAShow all

5 papers · 1 filter

astro-ph.GA2025★ 2 cited

Constraints on dark matter models from the stellar cores observed in ultra-faint dwarf galaxies: Self-interacting dark matter

Jorge Sanchez Almeida

It has been proposed that the stellar cores observed in ultra-faint dwarf (UFD) galaxies reflect underlying dark matter (DM) cores that cannot be formed by stellar feedback acting…

astro-ph.GA2025

Implications of the intriguing constant inner mass surface density observed in dark matter halos

Jorge Sanchez Almeida

It is known for long that the observed mass surface density of cored dark matter (DM) halos is approximately constant, independently of the galaxy mass (i.e., rhoc X rc simeq const…

astro-ph.GA2022★ 5 cited

Dwarf galaxies with central cores in modified Newtonian dynamics (MOND) gravity

J. Sanchez Almeida

Some dwarf galaxies are within the Mondian regime at all radii, i.e., the gravitational acceleration provided by the observed baryons is always below the threshold of $g_†\simeq 1.…

astro-ph.GA2022

The principle of maximum entropy and the distribution of mass in galaxies

J. Sanchez Almeida

We do not have a final answer to the question of why galaxies choose a particular internal mass distribution. Here we examine whether the distribution is set by thermodynamic equil…

astro-ph.GA2019★ 7 cited

Spotting the differences between active and non-active twin galaxies on kpc-scales. A pilot study

I. del Moral-Castro, B. Garcia-Lorenzo, C. Ramos Almeida +6

We present a pilot study aimed to identify large-scale galaxy properties that could play a role in activating a quiescent nucleus. To do so, we compare the properties of two isolat…