File:Aa37813-20.pdf
Page contents not supported in other languages.
Appearance
![File:Aa37813-20.pdf](http://upload.wikimedia.org/wikipedia/commons/thumb/9/94/Aa37813-20.pdf/page1-424px-Aa37813-20.pdf.jpg)
Size of this JPG preview of this PDF file: 424 × 600 pixels. Other resolutions: 170 × 240 pixels | 339 × 480 pixels | 543 × 768 pixels | 1,239 × 1,752 pixels.
Original file (1,239 × 1,752 pixels, file size: 2.31 MB, MIME type: application/pdf, 14 pages)
![]() | This is a file from the Wikimedia Commons. Information from its description page there is shown below. Commons is a freely licensed media file repository. You can help. |
Summary
DescriptionAa37813-20.pdf |
English: The star S2 orbiting the compact radio source Sgr A* is a precision probe of the gravitational field around the closest massive black hole (candidate). Over the last 2.7 decades we have monitored the star’s radial velocity and motion on the sky, mainly with the SINFONI and NACO adaptive optics (AO) instruments on the ESO VLT, and since 2017, with the four-telescope interferometric beam combiner instrument GRAVITY. In this Letter we report the first detection of the General Relativity (GR) Schwarzschild Precession (SP) in S2’s orbit. Owing to its highly elliptical orbit (e = 0.88), S2’s SP is mainly a kink between the pre-and post-pericentre directions of motion ≈±1 year around pericentre passage, relative to the corresponding Kepler orbit. The superb 2017−2019 astrometry of GRAVITY defines the pericentre passage and outgoing direction. The incoming direction is anchored by 118 NACO-AO measurements of S2’s position in the infrared reference frame, with an additional 75 direct measurements of the S2-Sgr A* separation during bright states (“flares”) of Sgr A*. Our 14-parameter model fits for the distance, central mass, the position and motion of the reference frame of the AO astrometry relative to the mass, the six parameters of the orbit, as well as a dimensionless parameter fSP for the SP (fSP = 0 for Newton and 1 for GR). From data up to the end of 2019 we robustly detect the SP of S2, δϕ ≈ 12′ per orbital period. From posterior fitting and MCMC Bayesian analysis with different weighting schemes and bootstrapping we find fSP = 1.10 ± 0.19. The S2 data are fully consistent with GR. Any extended mass inside S2’s orbit cannot exceed ≈0.1% of the central mass. Any compact third mass inside the central arcsecond must be less than about 1000 M⊙. |
Date | |
Source |
https://www.aanda.org/articles/aa/abs/2020/04/aa37813-20/aa37813-20.html https://doi.org/10.1051/0004-6361/202037813 |
Author | GRAVITY Collaboration |
Licensing
![w:en:Creative Commons](https://upload.wikimedia.org/wikipedia/commons/thumb/7/79/CC_some_rights_reserved.svg/90px-CC_some_rights_reserved.svg.png)
![attribution](https://upload.wikimedia.org/wikipedia/commons/thumb/1/11/Cc-by_new_white.svg/24px-Cc-by_new_white.svg.png)
This file is licensed under the Creative Commons Attribution 4.0 International license.
- You are free:
- to share – to copy, distribute and transmit the work
- to remix – to adapt the work
- Under the following conditions:
- attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
![]() |
This file, which was originally posted to
https://www.aanda.org/articles/aa/abs/2020/04/aa37813-20/aa37813-20.html, was reviewed on 22 November 2023 by reviewer Юрий Д.К., who confirmed that it was available there under the stated license on that date.
|
Captions
Add a one-line explanation of what this file represents
Detection of the Schwarzschild precession in the orbit of the star S2 near the Galactic centre massive black hole
Items portrayed in this file
depicts
4 March 2020
application/pdf
3d89e4b6b4ddf4bb5d92c6f75b04b3d0b4230001
2,423,420 byte
1,752 pixel
1,239 pixel
File history
Click on a date/time to view the file as it appeared at that time.
Date/Time | Thumbnail | Dimensions | User | Comment | |
---|---|---|---|---|---|
current | 13:47, 17 April 2020 | ![]() | 1,239 × 1,752, 14 pages (2.31 MB) | Pamputt | Uploaded a work by GRAVITY Collaboration from https://www.aanda.org/articles/aa/abs/2020/04/aa37813-20/aa37813-20.html https://doi.org/10.1051/0004-6361/202037813 with UploadWizard |
File usage
No pages on the English Wikipedia use this file (pages on other projects are not listed).
Metadata
This file contains additional information, probably added from the digital camera or scanner used to create or digitize it.
If the file has been modified from its original state, some details may not fully reflect the modified file.
Short title | Detection of the Schwarzschild precession in the orbit of the star S2 near the Galactic centre massive black hole |
---|---|
Image title | A\&A 636, L5 (2020). DOI: 10.1051/0004-6361/202037813 |
Author | GRAVITY Collaboration, Abuter R., Amorim A., Bauböck M., Berger J. P., Bonnet H., Brandner W., Cardoso V., Clénet Y., de Zeeuw P. T., Dexter J., Eckart A., Eisenhauer F., Förster Schreiber N. M., Garcia P., Gao F., Gendron E., Genzel R., Gillessen S., Habibi M., Haubois X., Henning T., Hippler S., Horrobin M., Jiménez-Rosales A., Jochum L., Jocou L., Kaufer A., Kervella P., Lacour S., Lapeyrère V., Le Bouquin J.-B., Léna P., Nowak M., Ott T., Paumard T., Perraut K., Perrin G., Pfuhl O., Rodríguez-Coira G., Shangguan J., Scheithauer S., Stadler J., Straub O., Straubmeier C., Sturm E., Tacconi L. J., Vincent F., von Fellenberg S., Waisberg I., Widmann F., Wieprecht E., Wiezorrek E., Woillez J., Yazici S., Zins G. |
Keywords |
|
Software used | LaTeX with hyperref package |
Conversion program | pdfTeX-1.40.14 |
Encrypted | no |
Page size | 595.276 x 841.89 pts (A4) |
Version of PDF format | 1.5 |
Retrieved from "https://en.wikipedia.org/wiki/File:Aa37813-20.pdf"