E-viri
Recenzirano
-
Foschi, A; Abuter, R; Abd El Dayem, K; Aimar, N; Amaro Seoane, P; Amorim, A; Berger, J P; Bonnet, H; Bourdarot, G; Brandner, W; Davies, R; de Zeeuw, P T; Defrère, D; Dexter, J; Drescher, A; Eckart, A; Eisenhauer, F; Förster Schreiber, N M; Garcia, P J V; Genzel, R; Gillessen, S; Gomes, T; Haubois, X; Heißel, G; Henning, Th; Jochum, L; Jocou, L; Kaufer, A; Kreidberg, L; Lacour, S; Lapeyrère, V; Le Bouquin, J -B; Léna, P; Lutz, D; Mang, F; Millour, F; Ott, T; Paumard, T; Perraut, K; Perrin, G; Pfuhl, O; Rabien, S; Ribeiro, D C; Sadun Bordoni, M; Scheithauer, S; Shangguan, J; Shimizu, T; Stadler, J; Straubmeier, C; Sturm, E; Subroweit, M; Tacconi, L J; Vincent, F; von Fellenberg, S; Woillez, J
Monthly notices of the Royal Astronomical Society, 06/2024, Letnik: 530, Številka: 4Journal Article
ABSTRACT The dark compact object at the centre of the Milky Way is well established to be a supermassive black hole with mass $M_{\bullet } \sim 4.3 \times 10^6 \, {\rm M}_{\odot }$, but the nature of its environment is still under debate. In this work, we used astrometric and spectroscopic measurements of the motion of the star S2, one of the closest stars to the massive black hole, to determine an upper limit on an extended mass composed of a massive vector field around Sagittarius A*. For a vector with effective mass $10^{-19} \lesssim m_\mathrm{ s} \lesssim 10^{-18} \, \rm eV$, our Markov chain Monte Carlo analysis shows no evidence for such a cloud, placing an upper bound $M_{\rm cloud} \lesssim 0.1 \% \, M_{\bullet }$ at 3σ confidence level. We show that dynamical friction exerted by the medium on S2 motion plays no role in the analysis performed in this and previous works, and can be neglected thus.
Avtor
![loading ... loading ...](themes/default/img/ajax-loading.gif)
Vnos na polico
Trajna povezava
- URL:
Faktor vpliva
Dostop do baze podatkov JCR je dovoljen samo uporabnikom iz Slovenije. Vaš trenutni IP-naslov ni na seznamu dovoljenih za dostop, zato je potrebna avtentikacija z ustreznim računom AAI.
Leto | Faktor vpliva | Izdaja | Kategorija | Razvrstitev | ||||
---|---|---|---|---|---|---|---|---|
JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
Baze podatkov, v katerih je revija indeksirana
Ime baze podatkov | Področje | Leto |
---|
Povezave do osebnih bibliografij avtorjev | Povezave do podatkov o raziskovalcih v sistemu SICRIS |
---|
Vir: Osebne bibliografije
in: SICRIS
To gradivo vam je dostopno v celotnem besedilu. Če kljub temu želite naročiti gradivo, kliknite gumb Nadaljuj.