Fundamental properties of the dark and the luminous matter from Low\n Surface Brightness discs

2020/05/07 by Chiara Di Paolo, P. Salucci, Di Paolo, Chiara +1
Physics and Astronomy · #Astronomy and Astrophysical Research #Astrophysics of Galaxies (astro-ph.GA) #Cosmology and Gravitation Theories #Cosmology and Nongalactic Astrophysics (astro-ph.CO) #Dark Matter and Cosmic Phenomena #FOS: Physical sciences #Galaxies: Formation, Evolution, Phenomena #General Relativity and Quantum Cosmology (gr-qc) #Stellar, planetary, and galactic studies

paper · pdf · doi:10.48550/arxiv.2005.03520

openalex publication_date 2020/05/07 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

Dark matter (DM) is one of the biggest mystery in the Universe. In this\nreview, after a brief discussion of the DM evidences and the main proposed\ncandidates and scenarios for the DM phenomenon, we focus on recent results on\nrotating disc galaxies giving a special attention to the Low Surface Brightness\n(LSB) galaxies. The main observational properties related to the baryonic\nmatter in LSBs, investigated over the last decades, are briefly recalled. Next,\nthe LSBs are analysed by means of the mass modelling of their rotation curves\nboth individually and stacked. The latter analysis, via the Universal Rotation\nCurve (URC) method, results really powerful in giving a global/universal\ndescription of the disc galaxies properties. We show the presence in LSBs of\nscaling relations between the galactic structural properties and we compare\nthem with those of galaxies of different morphologies. The findings confirm,\nfor all disc systems, a strong entanglement between the luminous matter (LM)\nand the DM. Moreover, we report how in LSBs the tight relationship between\ntheir radial gravitational acceleration g and their baryonic component g_b\nresults to also depend on the galactic radius at which the former have been\nmeasured. Finally, LSB galaxies strongly challenge the \ΛCDM scenario\nwith the relative collisionless dark particle and, alongside with the\nnon-detection of the latter, contribute to guide us towards a new scenario for\nthe DM phenomenon.\n

Citations

• A modification of the Newtonian dynamics as a possible alternative to the hidden mass hypothesis
• Relativistic Cosmology. I
• Limits on Stellar-Mass Compact Objects as Dark Matter from Gravitational Lensing of Type Ia Supernovae
• Small-Scale Challenges to the ΛCDM Paradigm

Related

• Dark Matter in Low Surface Brightness Galaxies
• Dark Matter in Disc Galaxies
• The visible matter - dark matter coupling
• Dim Matter in the Disks of Low Surface Brightness Galaxies
• The Mass Distribution in Low Surface Brightness Galaxies