S2, also known as S0–2, is a star in the star cluster close to the supermassive black hole Sagittarius A* (Sgr A*), orbiting it with a period of 16.0518 years, a semi-major axis of about 970 au, and a pericenter distance of 17 light hours (18 Tm or 120 au) – an orbit with a period only about 30% longer than that of Jupiter around the Sun ...

2016年6月16日 · Theoretically electronic configuration and number of unpaired electron can be found out by using molecular orbital theory. But, practically I have seen only up to 20. For example, for Ne2 But for S2 (32 electrons) how to find out the electronic configuration and number of unpaired electrons.

2024年2月6日 · In this paper, we investigate the scalar field effect on the orbital dynamics of S2 star. Hence, we consider a spacetime, namely Janis-Newman-Winicour (JNW) spacetime which is seeded by a minimally coupled, mass-less scalar field.

2025年1月28日 · S2, also known as S0–2, is a star in the star cluster close to the supermassive black hole Sagittarius A* (Sgr A*), orbiting it with a period of 16.0518 years, a semi-major axis of about 970 au, and a pericenter distance of 17 light hours (18 Tm or 120 au) – an orbit with a period only about 30% longer than that of Jupiter around the Sun ...

2009年12月2日 · The stars are used as test particles for the gravitational potential in which they move. Particularly important is the bright (mK ≈ 14) star S2 (S0-2 in the Keck nomenclature) orbiting the MBH in 15.9 years on an ellipse with an apparent diameter of about 0 2.

2018年3月9日 · Astronomers report no companion found for S2, the star orbiting near our Milky Way's central black hole. It's an "all-clear” for an exciting test of Einstein’s Theory of General Relativity.

Hence, the observed keplerian orbit of S2 around SgrA* provides compelling evidence for the existence of a massive black hole at the center of our Galaxy. On the figure below one can see the enclosed mass derived from different studies of gas dynamics and stellar dynamics at various distances from the Galacic Center.

2019年8月22日 · Orbital signatures for the S2 star are computed and shown to be detectable by GRAVITY. The scalar field can be constrained because the variation of orbital elements depends both on the relative mass of the scalar field to the black …

2022年9月26日 · The post-Newtonian or higher-order approximated Schwarzschild black hole models have been used by GRAVITY and UCLA galactic center groups to carefully investigate the S2 star's periastron precession. In this paper, we investigate the scalar field effect on the orbital dynamics of S2 star.

Discover the electron configuration of sulfur and S²⁻ ion, its structure, orbital diagram, valency and valence electrons, ground and excited states in detail.