Статья

Universal interferometric signatures of a black hole’s photon ring

Michael D. JohnsonBlack Hole Initiative at Harvard University, 20 Garden Street, Cambridge, MA 02138, USAAlexandru LupsascaBlack Hole Initiative at Harvard University, 20 Garden Street, Cambridge, MA 02138, USAAndrew StromingerBlack Hole Initiative at Harvard University, 20 Garden Street, Cambridge, MA 02138, USAGeorge N. WongCCS-2, Los Alamos National Laboratory, P.O. Box 1663, Los Alamos, NM 87545, USAShahar HadarBlack Hole Initiative at Harvard University, 20 Garden Street, Cambridge, MA 02138, USADaniel KapecSchool of Natural Sciences, Institute for Advanced Study, Princeton, NJ 08540, USARamesh NarayanBlack Hole Initiative at Harvard University, 20 Garden Street, Cambridge, MA 02138, USAAndrew ChaelBlack Hole Initiative at Harvard University, 20 Garden Street, Cambridge, MA 02138, USACharles F. GammieDepartment of Astronomy, University of Illinois at Urbana-Champaign, 1002 West Green Street, Urbana, IL 61801, USAPeter GalisonBlack Hole Initiative at Harvard University, 20 Garden Street, Cambridge, MA 02138, USADaniel C. M. PalumboBlack Hole Initiative at Harvard University, 20 Garden Street, Cambridge, MA 02138, USASheperd S. DoelemanBlack Hole Initiative at Harvard University, 20 Garden Street, Cambridge, MA 02138, USALindy BlackburnBlack Hole Initiative at Harvard University, 20 Garden Street, Cambridge, MA 02138, USAMaciek WielgusBlack Hole Initiative at Harvard University, 20 Garden Street, Cambridge, MA 02138, USAD. W. PesceBlack Hole Initiative at Harvard University, 20 Garden Street, Cambridge, MA 02138, USAJoseph FarahBlack Hole Initiative at Harvard University, 20 Garden Street, Cambridge, MA 02138, USAJ. M. MoranCenter for Astrophysics | Harvard and Smithsonian, 60 Garden Street, Cambridge, MA 02138, USA

2020en

ABI

Аннотация

The Event Horizon Telescope image of the supermassive black hole in the galaxy M87 is dominated by a bright, unresolved ring. General relativity predicts that embedded within this image lies a thin "photon ring," which is composed of an infinite sequence of self-similar subrings that are indexed by the number of photon orbits around the black hole. The subrings approach the edge of the black hole "shadow," becoming exponentially narrower but weaker with increasing orbit number, with seemingly negligible contributions from high-order subrings. Here, we show that these subrings produce strong and universal signatures on long interferometric baselines. These signatures offer the possibility of precise measurements of black hole mass and spin, as well as tests of general relativity, using only a sparse interferometric array.

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Идентификаторы

DOI: 10.1126/sciadv.aaz1310

Цитирования и источники

Цитирований: 6Использованных источников: 0

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