Journal
ASTROPHYSICAL JOURNAL LETTERS
Volume 901, Issue 2, Pages -Publisher
IOP Publishing Ltd
DOI: 10.3847/2041-8213/abb9b4
Keywords
Astrophysical black holes; black hole physics; Kerr black holes; Supermassive black holes; Galactic center; S stars
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Funding
- CIERA Fellowship at Northwestern University
- Harvard's Black Hole Initiative - JFT
- GBMF
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The spin of the massive black hole (BH) at the center of the Milky Way, SgrA*, has been poorly constrained so far. We place an upper limit on the spin of SgrA* based on the spatial distribution of the S-stars, which are arranged in two almost edge-on disks that are located at a position angle of approximately 45 degrees with respect to the Galactic plane, on a milliparsec scale around the Galactic center. Requiring that the frame-dragging precession has not had enough time to make the S-star orbital angular momentum precess, the spin of the massive BH at the center of the Milky Way can be constrained to chi less than or similar to 0.1.
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