Relativistic Effects in Orbital Motion of the S-Stars at the Galactic Center
The Galactic Center star cluster, known as S-stars, is a perfect source of relativistic phenomena observations. The stars are located in the strong field of relativistic compact object Sgr A* and are moving with very high velocities at pericenters of their orbits. In this work we consider motion of...
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| Format: | Article |
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MDPI AG
2020-10-01
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| Series: | Universe |
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| Online Access: | https://www.mdpi.com/2218-1997/6/10/177 |
| _version_ | 1797551097778274304 |
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| author | Rustam Gainutdinov Yurij Baryshev |
| author_facet | Rustam Gainutdinov Yurij Baryshev |
| author_sort | Rustam Gainutdinov |
| collection | DOAJ |
| description | The Galactic Center star cluster, known as S-stars, is a perfect source of relativistic phenomena observations. The stars are located in the strong field of relativistic compact object Sgr A* and are moving with very high velocities at pericenters of their orbits. In this work we consider motion of several S-stars by using the Parameterized Post-Newtonian (PPN) formalism of General Relativity (GR) and Post-Newtonian (PN) equations of motion of the Feynman’s quantum-field gravity theory, where the positive energy density of the gravity field can be measured via the relativistic pericenter shift. The PPN parameters <inline-formula><math display="inline"><semantics><mi>β</mi></semantics></math></inline-formula> and <inline-formula><math display="inline"><semantics><mi>γ</mi></semantics></math></inline-formula> are constrained using the S-stars data. The positive value of the <inline-formula><math display="inline"><semantics><msubsup><mi>T</mi><mi>g</mi><mn>00</mn></msubsup></semantics></math></inline-formula> component of the gravity energy–momentum tensor is confirmed for condition of S-stars motion. |
| first_indexed | 2024-03-10T15:38:58Z |
| format | Article |
| id | doaj.art-e76211d8be8c4fe4bba0a3568818b05c |
| institution | Directory Open Access Journal |
| issn | 2218-1997 |
| language | English |
| last_indexed | 2024-03-10T15:38:58Z |
| publishDate | 2020-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Universe |
| spelling | doaj.art-e76211d8be8c4fe4bba0a3568818b05c2023-11-20T17:00:18ZengMDPI AGUniverse2218-19972020-10-0161017710.3390/universe6100177Relativistic Effects in Orbital Motion of the S-Stars at the Galactic CenterRustam Gainutdinov0Yurij Baryshev1SPb Branch of Special Astrophysical Observatory of Russian Academy of Sciences, 65 Pulkovskoye Shosse, 196140 St. Petersburg, RussiaAstrophysics Department, Mathematics & Mechanics Faculty, Saint Petersburg State University, 28 Universitetskiy Prospekt, 198504 St. Petersburg, RussiaThe Galactic Center star cluster, known as S-stars, is a perfect source of relativistic phenomena observations. The stars are located in the strong field of relativistic compact object Sgr A* and are moving with very high velocities at pericenters of their orbits. In this work we consider motion of several S-stars by using the Parameterized Post-Newtonian (PPN) formalism of General Relativity (GR) and Post-Newtonian (PN) equations of motion of the Feynman’s quantum-field gravity theory, where the positive energy density of the gravity field can be measured via the relativistic pericenter shift. The PPN parameters <inline-formula><math display="inline"><semantics><mi>β</mi></semantics></math></inline-formula> and <inline-formula><math display="inline"><semantics><mi>γ</mi></semantics></math></inline-formula> are constrained using the S-stars data. The positive value of the <inline-formula><math display="inline"><semantics><msubsup><mi>T</mi><mi>g</mi><mn>00</mn></msubsup></semantics></math></inline-formula> component of the gravity energy–momentum tensor is confirmed for condition of S-stars motion.https://www.mdpi.com/2218-1997/6/10/177Parameterized Post-Newtonian formalismrelativistic celestial mechanicsGalactic Center |
| spellingShingle | Rustam Gainutdinov Yurij Baryshev Relativistic Effects in Orbital Motion of the S-Stars at the Galactic Center Universe Parameterized Post-Newtonian formalism relativistic celestial mechanics Galactic Center |
| title | Relativistic Effects in Orbital Motion of the S-Stars at the Galactic Center |
| title_full | Relativistic Effects in Orbital Motion of the S-Stars at the Galactic Center |
| title_fullStr | Relativistic Effects in Orbital Motion of the S-Stars at the Galactic Center |
| title_full_unstemmed | Relativistic Effects in Orbital Motion of the S-Stars at the Galactic Center |
| title_short | Relativistic Effects in Orbital Motion of the S-Stars at the Galactic Center |
| title_sort | relativistic effects in orbital motion of the s stars at the galactic center |
| topic | Parameterized Post-Newtonian formalism relativistic celestial mechanics Galactic Center |
| url | https://www.mdpi.com/2218-1997/6/10/177 |
| work_keys_str_mv | AT rustamgainutdinov relativisticeffectsinorbitalmotionofthesstarsatthegalacticcenter AT yurijbaryshev relativisticeffectsinorbitalmotionofthesstarsatthegalacticcenter |