Hinting a dark matter nature of Sgr A∗ via the S-stars

The motion data of the S-stars around the Galactic center gathered in the last 28 yr imply that Sgr A∗ hosts a supermassive compact object of about 4×10⁶ M⊙, a result awarded with the Nobel Prize in Physics 2020. A non-rotating black hole (BH) nature of Sgr A∗ has been uncritically adopted since the...

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Detalles Bibliográficos
Autores principales: Becerra Vergara, E. A., Argüelles, Carlos Raúl, Krut, A., Rueda, Jorge Armando, Ruffini, Remo
Formato: Articulo
Lenguaje:Inglés
Publicado: 2021
Materias:
Astronomía
Elementary particles
Dark matter
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/125412
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-125412
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Astronomía
Elementary particles
Dark matter
spellingShingle Astronomía
Elementary particles
Dark matter
Becerra Vergara, E. A.
Argüelles, Carlos Raúl
Krut, A.
Rueda, Jorge Armando
Ruffini, Remo
Hinting a dark matter nature of Sgr A∗ via the S-stars
topic_facet Astronomía
Elementary particles
Dark matter
description The motion data of the S-stars around the Galactic center gathered in the last 28 yr imply that Sgr A∗ hosts a supermassive compact object of about 4×10⁶ M⊙, a result awarded with the Nobel Prize in Physics 2020. A non-rotating black hole (BH) nature of Sgr A∗ has been uncritically adopted since the S-star orbits agree with Schwarzschild geometry geodesics. The orbit of S2 has served as a test of General Relativity predictions such as the gravitational redshift and the relativistic precession. The central BH model is, however, challenged by the G2 post-peripassage motion and by the lack of observations on event-horizon-scale distances robustly pointing to its univocal presence. We have recently shown that the S2 and G2 astrometry data are better fitted by geodesics in the spacetime of a self-gravitating dark matter (DM) core-halo distribution of 56 keV-fermions, "darkinos", which also explains the outer halo Galactic rotation curves. This Letter confirms and extends this conclusion using the astrometry data of the 17 best-resolved S-stars, thereby strengthening the alternative nature of Sgr A∗ as a dense core of darkinos.
format Articulo
Articulo
author Becerra Vergara, E. A.
Argüelles, Carlos Raúl
Krut, A.
Rueda, Jorge Armando
Ruffini, Remo
author_facet Becerra Vergara, E. A.
Argüelles, Carlos Raúl
Krut, A.
Rueda, Jorge Armando
Ruffini, Remo
author_sort Becerra Vergara, E. A.
title Hinting a dark matter nature of Sgr A∗ via the S-stars
title_short Hinting a dark matter nature of Sgr A∗ via the S-stars
title_full Hinting a dark matter nature of Sgr A∗ via the S-stars
title_fullStr Hinting a dark matter nature of Sgr A∗ via the S-stars
title_full_unstemmed Hinting a dark matter nature of Sgr A∗ via the S-stars
title_sort hinting a dark matter nature of sgr a∗ via the s-stars
publishDate 2021
url http://sedici.unlp.edu.ar/handle/10915/125412
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