533 Дня Войны -как утомили мозг того кто понимает
кто понимает
что не Войны
важны
для жизни на Земле
и автомат не высший идеал
для тех кто хоть однажды
глаза в ночное небо поднимал....
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Compiled 2019-06-25 00:59:20Z
Measurement of the Spin of the M87 Black Hole from its Observed Twisted Light
Fabrizio Tamburini,1, ; Bo Thid;,2, † and Massimo Della Valle3, ‡
1ZKM, Lorenzstra;e 19, Karlsruhe, D-76135 Germany
2Swedish Institute of Space Physics, ;ngstr;m Laboratory, Box 537, SE-751 21 Uppsala, Sweden
3Capodimonte Astronomical Observatory, INAF-Napoli, Salita Moiariello 16, I-80131 Naples, Italy
We present observational evidence that light propagating near a rotating black hole is twisted, i.e., carries
orbital angular momentum (OAM). Using wavefront reconstruction and phase recovery techniques, we extracted
the OAM spectra from ; = 1.3 mm radio intensity data collected by the Event Horizon Telescope from around
the black hole M87*. The twisted-light/OAM method, complementary to black-hole shadow circularity analysis,
allows a direct probing of Kerr metrics and shows that the M87* rotates clockwise with an estimated rotation
parameter a ; 0.9±0.1.
Keywords
Свидетельство о публикации №123081005998