2025A&A...698L..15G

Query : 2025A&A...698L..15G

2025A&A...698L..15G - Astronomy and Astrophysics, volume 698L15 (2025/6-1)

Exploring the presence of a fifth force at the Galactic Center.

GRAVITY COLLABORATION, ABD EL DAYEM K., ABUTER R., AIMAR N., AMARO SEOANE P., AMORIM A., BERGER J.P., BONNET H., BOURDAROT G., BRANDNER W., CARDOSO V., CLENET Y., DAVIES R., DE ZEEUW P.T., DRESCHER A., ECKART A., EISENHAUER F., FEUCHTGRUBER H., FINGER G., FORSTER SCHREIBER N.M., FOSCHI A., GARCIA P., GENDRON E., GENZEL R., GILLESSEN S., HARTL M., HAUBOIS X., HAUSSMANN F., HENNING T., HIPPLER S., HORROBIN M., JOCHUM L., JOCOU L., KAUFER A., KERVELLA P., LACOUR S., LAPEYRERE V., LE BOUQUIN J.-B., LENA P., LUTZ D., MANG F., MORE N., OSORNO J., OTT T., PAUMARD T., PERRAUT K., PERRIN G., RABIEN S., RIBEIRO D.C., SADUN BORDONI M., SCHEITHAUER S., SHANGGUAN J., SHIMIZU T., STADLER J., STRAUB O., STRAUBMEIER C., STURM E., TACCONI L.J., URSO I., VINCENT F., VON FELLENBERG S.D., WIEPRECHT E. and WOILLEZ J.

Abstract (from CDS):

Aims. We investigate the presence of a Yukawa-like correction to Newtonian gravity at the Galactic Center, leading to a new upper limit on the intensity of such a correction.
Methods. We performed a Markov chain Monte Carlo (MCMC) analysis using the astrometric and spectroscopic data of star S2 collected at the Very Large Telescope by GRAVITY, NACO, and SINFONI instruments, covering the period from 1992 to 2022.
Results. The precision of the GRAVITY instrument allows us to derive the most stringent upper limit at the Galactic Center for the intensity of the Yukawa contribution (∝ αe^-λr^) of |α|< 0.003 for a scale length of λ = 3 ⋅ 1013 m (∼ 200 AU). This is an improvement on all estimates obtained in previous works by roughly one order of magnitude.

Abstract Copyright: © The Authors 2025

Journal keyword(s): gravitation - celestial mechanics - Galaxy: center

Simbad objects: 6

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Number of rows : 6
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 NAME Galactic Center reg 17 45 39.60213 -29 00 22.0000           ~ 16269 0
2 [EG97] S29 * 17 45 40.03040 -29 00 27.9426           ~ 30 0
3 NAME Sgr A* X 17 45 40.03599 -29 00 28.1699           ~ 4970 3
4 [EG97] S2 * 17 45 40.0442 -29 00 27.975           B0/2V 420 1
5 [EG97] S55 * ~ ~           ~ 50 0
6 [EG97] S62 * ~ ~           ~ 34 0

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